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Prince[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 06:25 AM EDT:
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Black Clergyman[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 06:17 AM EDT:
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Clergyman[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 06:14 AM EDT:
promoChoice=NBRQ graphicsDir=/graphics.dir/alfaeriePNG/ whitePrefix=w blackPrefix=b graphicsType=png squareSize=54 symmetry=none unicorn::::e5, circle::::c3,g3,c7,g7,,e4,d5,f5,e6

Conjurer[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 05:58 AM EDT:
promoChoice=NBRQ graphicsDir=/graphics.dir/alfaeriePNG/ whitePrefix=w blackPrefix=b graphicsType=png squareSize=54 symmetry=none unicorn::::e5, circle::::,,e3,d4,f4,c5,g5,d6,f6,e7

Diver[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 05:54 AM EDT:
promoChoice=NBRQ graphicsDir=/graphics.dir/alfaeriePNG/ whitePrefix=w blackPrefix=b graphicsType=png squareSize=54 symmetry=none unicorn::::e5, circle::::,,c3,g3,d4,e4,f4,d5,f5,d6,e6,f6,c7,g7

Caster[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 05:49 AM EDT:
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Sorcerer[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 05:44 AM EDT:
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White Mage[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 05:39 AM EDT:
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Black Mage[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 05:37 AM EDT:
promoChoice=NBRQ graphicsDir=/graphics.dir/alfaeriePNG/ whitePrefix=w blackPrefix=b graphicsType=png squareSize=54 symmetry=none unicorn::::e5, circle::::,,d3,f3,c4,d4,f4,g4,c6,d6,f6,g6,d7,f7

Thief[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 05:30 AM EDT:
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Cleric[Subject Thread] [Add Response]
hirosi Kano wrote on Thu, May 18, 2023 05:08 AM EDT:
Cleric
promoChoice=NBRQ graphicsDir=/graphics.dir/alfaeriePNG/ whitePrefix=w blackPrefix=b graphicsType=png squareSize=54 symmetry=none unicorn::::e5, circle::::c3,e3,g3,c5,g5,c7,e7,g7,,d4,f4,d6,f6

Huge variants[Subject Thread] [Add Response]
H. G. Muller wrote on Wed, May 17, 2023 10:29 AM EDT:

The idea to give the Ram a large speed without giving it a large value by giving it Grasshopper-like non-captures can be applied to more-valuable pieces as well. In particular the short-range leapers would benefit from it. When the Elephant gets an extra diagonal hop (FAmgB), and the War Machine an extra orthogonal hop (WDmgR), they can get quickly deployed to distant locations. I will call this 'air lifting'. The Prince could get this instead of the forward double step (KmgR).

With an adjacent blocker the air lift would coincide with the A or D jump the piece would have anyway, so on average this gives not many extra moves. So it won't drive up the value too much. An alternative would be to only give the pieces cA an cD, so that the mgB or mgR air lift replace the mA and mD part of the piece.

In a similar spirit, the Prince could get its non-capture K moves replaced by the move to the most-distant square on a Q trajectory. (Like in All-the-Way Chess, cKyafpoabQ). Perhaps stopping just before the obstacle is also more natural for the other minors than landing immediately behind it.


New book on chess variants[Subject Thread] [Add Response]
H. G. Muller wrote on Sun, May 14, 2023 03:36 AM EDT in reply to Jean-Louis Cazaux from Sat May 13 02:55 AM:

I can add that the book is printed in color!


Jean-Louis Cazaux wrote on Sat, May 13, 2023 02:55 AM EDT:

I have the pleasure to announce my latest book, "More Chess & More Than Chess", finally published 3 years after I started this project. It is available on various platforms, preferably here, on Lulu.com

This book gives many details about chess variants, a large chapter of their history, a one-by-one presentation of many fairy pieces and then, it presents 20 selected chess variants. 10 of them are mine (Shako, Tamerlane II, Metamachy, Very Large Chess, Zanzibar/Maasai, Pemba, Gigachess, Terachess, Fantastic XIII, Rollerball) and 10 are among those I prefer in the category of large CVs. There are Musketeer Chess from Zied Haddad, Sac Chess from Kevin Pacey, Opulent Chess from Greg Strong, Expanded Chess and Enhanced Courier Chess from Daniel Zacharias, Elven Chess from H.G. Muller, Eurasian Chess and Gross Chess from Fergus Duniho, Hectochess from Adam de Witt and Obento Chess from Eric Silverman.

These authors are acknowledged for their co-operation here. I also want to deeply thanks H.G. Muller who wrote two contributions in this book about the history of chess variants and computers, and about the estimation of pieces' value. H.G. made also the excellent suggestion, and even developed the online appendix of this book, where all these games can be played with Interactive Diagrams and benefit from the numerous features of this application. It can be found here:

http://history.chess.free.fr/mcmtc/appendix/index.html

Finally, this book would not exist without the endless help of Paul Rapoport, "Numerist" on this web place, who has accompanied me all along these 3 years, providing precious advices and opinions and, above all, checking every word, every sign of punctuation, as English is not my mother tongue as you can guess reading this message. This book is also his book.

I hope you will find it interesting and I will be very glad if it emulates some new creations of fantastic chess variants in the future.

 


Huge variants[Subject Thread] [Add Response]
H. G. Muller wrote on Thu, May 4, 2023 04:10 AM EDT in reply to Aurelian Florea from Wed May 3 11:01 AM:

Since these variants have so many piece types, I tried to pick mainly pieces that a player might already be familiar with. This is why I preferred WAD and FC over FAH and WC, and avoided bent sliders that turn after two steps. I had my doubts on FC, because I already have a pure C. But because it is such a well-known piece I considered it admissble. Other compounds of C plus a 4-target atom (such as WC) would suffer from the same lack of distinction with the pure C, and would not have the benefit of being somewhat familiar.

I could not afford eliminating the Camel itself, because there aren't too many totally symmetric 8-target leapers, and I needed everyone I could get to have enough knight-class pieces. But when I want to avoid including pieces that differ from each other by just having 4 extra moves, that leaves almost no 12-target leapers.


Aurelian Florea wrote on Wed, May 3, 2023 11:01 AM EDT in reply to H. G. Muller from Sat Apr 29 01:47 AM:

Thinking about the FAH (which I call Siege Elephant in my games) and the champion there is also the WL (That I call Mamluk) and the FL (the wizard). So you may have a variation on the game where the WAD and FL are replaced by FAH and WL.

See now why I prefer to make variations on the same theme? Or it could be just me being weird, I guess.

Actually I do not now how this goes with your other pieces. But if you replace the FA with WD it is probably the same.

Also, the craziness could go on, you know?

And another thing. Have you considered bent riders that bend after more then 1 move: the R2 then bishop or the B2 then rook? They probably work well in such variants.


H. G. Muller wrote on Sat, Apr 29, 2023 01:47 AM EDT in reply to Edward Webb from Fri Apr 28 04:34 PM:

Having most pieces promote makes the game more shogi-like than chess-like, and I would like to avoid that. For this reason I also specified promotion on last rank, rather than in the camp.

If mating potential would be a problem, I'd rather adopt the rule that a bare King loses. But I am not sure it would be a problem. Eliminating all Pawns when you are behind is easier said than done. When behind, you will not be in a position to gain them. So you would have to sacrifice them away, where each Pawn would cost you yet another piece. For the Rams that is fine, as these are practictically useless on a near-empty board, if not from the very beginning. But there are many more Pawns than Rams, and you would have to eliminate the Warriors too.

I have little doubt that 3 minors could checkmate a bare King, even on 18x18.


Edward Webb wrote on Fri, Apr 28, 2023 04:34 PM EDT:

There's a large number of pieces which would struggle to checkmate a king. A player that's behind would be tempted to capture all of their opponent's pawns and hope that there is insufficient mating material.

One suggestion is for pieces to be able to promote to themselves plus a king movement when entering the opponent's camp, with the idea of king + any being able to checkmate a lone king.

Some pieces would benefit more than others, though. Also, the game would become more complicated as the piece values would change.


H. G. Muller wrote on Fri, Apr 28, 2023 02:02 PM EDT:

This is as large as I want to go: 2 x 96 pieces on an 18 x 18 board:

satellite=big files=18 ranks=18 promoZone=1 maxPromote=2 promoChoice=EA,AM,G graphicsDir=/graphics.dir/alfaeriePNG/ squareSize=33 graphicsType=png theme=DD whitePrefix=w blackPrefix=b borders=0 firstRank=1 useMarkers=1 newClick=1 captureMatrix=/"32/31^6=/"/31^6%%=/37%%/" pawn::fmWfceFifmnDifmnH::a6-r6 warrior::fmWfmnnDfceFbhcN:quickpawn:a2-e2,n2-r2 ram:RM:mgQcfD::c1,p1,f2,m2 scout::mNcA:knightpawn:g5,l5 vao::mBpcB::e1,n1 camel::::b4,q4 zebra::::d4,o4 elephant::FA:elephantferz:e5,n5 spider:SP:AH::i2,j2 frog::FH::a5,r5 prince:PR:KfmnD:duke:c5,p5 knight:N:::f5,m5 bishop::::i5,j5 cannon:CN:::f1,m1 wizard:WZ:FC:mage:d1,o1 champion:CH:WAD::f4,m4 rook::::a3,r3 squirrel:SQ:nAnDnN::h5,k5 dragon horse:DH:BW:promotedbishop:b5,q5 dragon king:DK:RF:promotedrook:a1,r1 snake:SN:nCnZnGnH::e3,n3 nightrider:NR:::b1,q1 leo:LE:mQpcQ:paovao:c3,p3 rhino:RH:[W?fsB]::g1 gryphon::[F?fsR]::l2 archbishop:::cardinal:d5,o5 marshall:::chancellor:i3 queen::::k1 lion::KNAD::g2 amazon:AM:QN::h1 archer:AR:WA::g4,l4 spearman:SM:FD:nspearman:g3,l3 war machine:D:WD:warmachinewazir:h4,k4 bat:BA:B(paf)14cB::i4,j4 raven:FA:R(paf)14cR:bird2:h2,k2 eagle:EA:Q(paf)14cQ:bird:i1,j1 terrorino:TO:QADmpafcafmK:sabretooth:j3 terror::QNADcamK:dragon:h3,k3 king::KispO9::l1

Rather than doubling many of the super pieces, I only doubled the Archbishop, and added a new (anti-trade protected) monster piece in a single copy (the Terrorino). Compared to Megalomachy there are two more Pawns (wider board!) and two more Warriors. The remaining 10 extra pieces are new and appear in pairs: The Spider (a new minor, AH), the Omega-Chess Wizard and Champion, the (lame) Squirrel (NAD), and the Snake (lame GHCZ), all rook class.

The setup has a few 'air holes', to limit the density to 60%. These should allow reasonably easy development of most pieces. E.g. after the Lion is gone, the Rhino and Amazon have a nearly free diagonal (assuming 5th-rank pieces are developed quickly). And on the other Wing the Griffon can leave over the m-file, and the Queen along the diagonal that this opens.

The Spiders start rather backward, but by their H move they can jump over the serial defense shield, to reach the Bishop squares (after these have been developed, which should have high priority, as those files are vulnerable to Cannon attack). After the Spiders move on, the Marshall, Terrors and Terrorino can use those squares, as these are all jumping pieces.


H. G. Muller wrote on Fri, Apr 28, 2023 04:02 AM EDT:

I was running out of ideas for adding other rook-class pieces. Leapers with 12 move targets can play that role, but I dislike having pieces that just add 4 moves to a piece that already participates. This is what you automatically get when you use an oblique atom in them, as these already have 8 moves, and the pure N, C and Z already participate. As an exeption I do allow the Omega-Chess Wizard (FC), because it is a well-known and popular piece, while the Omega-Chess Champion (WAD) is acceptable despite its overlap with WA and WD because the latter two in the variant I am contemplating would have the special ability to block flying captures, which makes them very different even from a normal piece that would move exactly the same. Since all combinations of pairs of W, F, D, A already do occur as minors, the non-inclusion requirement would limit sufficiently non-overlapping 12-target leapers to compounds that contain both G and H. This leads to unattractive and difficult-to-master move patterns.

But then it occurred to me that pieces can also be weakened by making them lame, rather than reducing the number of move targets. A lame 16-target leaper might have a value similar to a true 12-target leaper. And lame leaps are not counter-intuitive. (In fact every distant slider move is one, and we understand sliding.) In particular, the following pieces seem nice:

  • A (lame) Squirrel (nAnDnN, where the non-jumping N move is the multi-path Moo.
  • The nHnGnCnZ ('Snake'), where the nCnZ part is George Duke's multi-path Falcon.

The heuristic of the interactive Diagram guestimates Champion, Wizard, Cannon and Bishop on 18x18 around 500 (where the 8-target leapers and Vao are around 300), the Squirrel at 600, the Rook at 650, and the Snake and Dragon Horse (BW) around 750. For comparison, Queen is valued 1350, Marshall (RN) 1100, Griffon and Lion around 1200.

Thus this Squirrel and Snake fit well in the set of pieces that can be traded 2-1 for a super-piece (plus Pawn). Or together with a minor for one of the weaker super-pieces.


H. G. Muller wrote on Thu, Apr 27, 2023 05:31 AM EDT in reply to Aurelian Florea from 01:48 AM:

FAH would indeed be a good choice for a 12-target leaper on a large board. In this particular case it has a bit too much overlap with the FH (Frog) and FA (Elephant) that I already have. When I used the WAD (Champion) it was as a replacement for WD (War Machine). Of course it still had overlap with the WA (Archer), but the latter is really a special-purpose piece here, because of its blocking power for flying captures. If I would have a need for upgrading another minor, the FAH would certainly be a prime candidate as a replacement for the Elephant or Frog.

Having two copies of most super-pieces really unbalances the piece-value spectrum a bit. So perhaps an 18x18 variant should have more 12-target leapers. On these large boards the leapers get weaker compared to the sliders, and consequently slider-leaper compounds also start to lag behind pure sliders. E.g. the difference between Marshall or Archbishop on the one hand and Queen on the other increases with board size. In particular pieces with 8 sliding directions become very strong, and Griffon and Rhino also belong in that class. So perhaps I should not have two Queens and two Griffons, and introduce another pair of rook-class pieces instead. A sliding version of the FAH (BH) might also be a good choice, to stay on the high-value side of the Rook. (The 12-target leapers also suffer from the large board, compared to sliders.)


Aurelian Florea wrote on Thu, Apr 27, 2023 01:48 AM EDT in reply to H. G. Muller from Wed Apr 26 04:55 PM:

HG,

If you use the WAD, you may also think about the FAH as it works somewhat the same but with a bit more of a diagonal flavor.


H. G. Muller wrote on Wed, Apr 26, 2023 04:55 PM EDT:

I wonder if there would still be market for an even larger chess variant. After all, Dai Dai and Maka Dai Dai Shogi have 2x96 pieces, which still surpasses the 2x80 of Megalomachy. (But 18th-century Buddhist Monks might have been much more patient than modern westerners...) On an 18x18 board, maintaining the 6-rank distance between the armies, there would be room for 6 x 18 = 108 pieces in each camp. But with so many ranks in the camp there is ample room for 12 empty squares in it without making it too easy to avert the danger of a suffocated mate. E.g. put the empty squares only on the 3rd and 4th rank, in the wings. That would bring the piece density to 60%, which I think is acceptable. The 5th rank, directly behind the Pawns, would remain fully filled, so the slow minors could be placed there to give them optimally fast access to the battle.

Compared to Megalomachy I could put two copies of all super-pieces other than Amazon (which then symmetrically pairs with the King). That would give an extra Lion, Queen, Griffon, Rhino, Marshall and Archbishop, while there would of course also be 2 extra Pawns. So that already makes 8 extra pieces. I think with so many pieces it would require an extra pair of ultra-powerful pieces (Terrorinos or Terrorissimos) protected by anti-trading rules to keep the game fluid . With so many super-pieces there would have to be a wider shield against flying attacks to shelter behind. (Just placing the shield more forward would make it too easy to slip behind it from the wings.) This would need an extra pair of pieces that block flying captures. The WD (which was not in Megalomachy but replaced by the Omega Champion WAD there) could be given this role. That leaves room for two more piece pairs. A good choice would be the Omega Wizard (as we already have the Champion) as a rook-class piece, and perhaps two extra Warriors.

The Terrorino could be a Queen that could also capture as a limited-range Locust: on the 1st or 2nd square in each direction, by landing directly behind it (i.e. a tuned-down version of the Teaching King from Maka Dai Dai Shogi). Or, if that makes it too strong, just on the 2nd square, and then also a non-destructive jump to that.


H. G. Muller wrote on Tue, Apr 25, 2023 02:21 PM EDT in reply to Jean-Louis Cazaux from 01:49 PM:

OK, thanks! I also thought about 'Meteramachy' for 'Mother of Battles', but I suppose this is syntactically incorrect, because it would need the 2nd declination plural of 'machy'. So I suppose it should be 'Meteramachoon'.

(I googled for the declination of Greek nouns, to see how words ending with the letter eta would fare. And, belief it or not, the first hit I got actually used the word μάχη as example! :-) )


Jean-Louis Cazaux wrote on Tue, Apr 25, 2023 01:49 PM EDT in reply to H. G. Muller from Tue Apr 18 04:06 AM:

dear HG. No pb with your choice of names. After Rhitmomachy, Ouranomachy, Metromachy, we are into a secular tradition


H. G. Muller wrote on Sat, Apr 22, 2023 02:28 PM EDT in reply to H. G. Muller from Wed Apr 19 05:59 AM:

Based on the experience of setting up the 14x14 variant, I would now do the 16x16 like this:

satellite=megalo files=16 ranks=16 promoZone=1 maxPromote=2 promoChoice=EA,AM,G graphicsDir=/graphics.dir/alfaeriePNG/ squareSize=33 graphicsType=png theme=DD whitePrefix=w blackPrefix=b borders=0 firstRank=1 useMarkers=1 newClick=1 protected=32 captureMatrix=/"27/27^^^^^=/"/27^^^^^%= pawn::fmWfceFifmnDifmnH::a5-p5 warrior::fmWfmnnDfceFbhcN:quickpawn:a2-d2,m2-p2 ram:RM:mgQcfD::c1,n1,e2,l2 scout::mNcA:knightpawn:g4,j4 vao::mBpcB::d1,m1 camel::::d3,m3 zebra::::e3,l3 war machine:D:WD:warmachinewazir:f4,k4 elephant::FA:elephantferz:d4,m4 frog::FH::a4,p4 prince:PR:KfmnD:duke:b3,o3 knight:N:::b4,o4 bishop::::h4,i4 cannon:CN:::e1,l1 rook::::a3,p3 leo:LE:mQpcQ:paovao:c3,n3 nightrider:NR:::b1,o1 dragon horse:DH:BW:promotedbishop:c4,n4 dragon king:DK:RF:promotedrook:a1,p1 rhino:RH:[W?fsB]::g1 gryphon::[F?fsR]::f1 archbishop:::cardinal:e4 marshall:::chancellor:l4 queen::::j1 lion::KNAD::h2 amazon:AM:QN::i2 archer:AR:WA::f3,k3 spearman:SM:FD:nspearman:g3,j3 bat:BA:B(paf)14cB::h3,i3 raven:FA:R(paf)14cR:bird2:g2,j2 eagle:EA:Q(paf)14cQ:bird:h1,i1 terror::QNADcamK:dragon:f2,k2 king::KispO9::k1

I was never happy with the Steward, so I replaced it by a novel piece that I called 'Scout'. I want this to be worth about 2 Pawns, so that it can take on a Pawn protected by a Pawn (if it has backup). But I am in doubt what move I should give it. Pieces with 4 captures and 8 noncaptures (e.g. Mat Winther's Alpaca) have this value, but are necessarily divergent. The alternative is a piece with 5 or 6 normal moves. But that would have to be asymmetric. In the Diagram above I chose mNcA, to not make it too slow, not make it color bound, give it two forward captures rather than one, and allow it to attack a Pawn without being attacked back by it. (The most suitable asymmetric alternative would be fhNbD.)


Material Cost[Subject Thread] [Add Response]
H. G. Muller wrote on Fri, Apr 21, 2023 04:21 AM EDT in reply to hirosi Kano from Thu Apr 20 11:23 PM:

Well, it is usually very easy to come up with some method to derive the (well-known) piece values for orthodox Chess from the move counts by some calculation. After all, there are only 4 piece types. More often than not these would give totally wrong values for unorthodox pieces.

In this case you don't even manage to reproduce the correct values for the 4 orthodox pieces: it is well-known that a Queen is worth between 1 and 2 Pawns more than a Rook and a Knight, while your method results in the Queen being exactly equal to Rook + Knight.


Huge variants[Subject Thread] [Add Response]
H. G. Muller wrote on Wed, Apr 19, 2023 05:59 AM EDT:

Perpetual checking is also a concern. A flying Queen would be much to good at that. In Tenjiku Shogi that is not a problem, because repetitions (other than check evasions) are forbidden. (But even then it can take a long time before a flying Queen runs out of new checks.)

Something would have to be done against this, or players would just preserve their Eagle until the board population thins enough to draw by a perpetual, when they are in danger of losing. Where a Rook on a near-empty board cannot check a King forever (so that the Raven is not really a problem), and the color-bound Bat is no problem at all, we know that even a single piece to shelter behind is woefully inadequate defense against checking by a Queen.

A similar problem could occur through perpetual chasing. But only the Terror is worth more than an Eagle; other pieces can simply be protected when the Eagle attacks them. This is a second reason to extend the anti-trading rule of the Terror to capture by an Eagle: if capturing a protected Terror is forbidden for Eagle as well as Terror, the latter can be protected too to put an end to any chase.

The Eagle should definitely be able to check a King, though; that was the entire point of including it. To not interfere with normal chess-like play too much, the repetition rule could state that it is forbidden to repeat a position through a move with an Eagle that delivers check.


H. G. Muller wrote on Tue, Apr 18, 2023 03:38 PM EDT in reply to H. G. Muller from 04:06 AM:

I am still a bit in doubt with regard to the Eagle (= flying Q) vs Terror piece value and the anti-trading rule. If the values are too close, trading Eagle for Terror might be common. And this makes the anti-trading rule for Terrors ineffective; both the Eagles and the Terrors would disappear from the board fairly quickly. Only when the Terrors stick out so much that you would not trade them for anything else, a ban of trading them for each other would result in a prolonged existence.

Now in the late end-game, when little is left to jump over, the Eagle would become similar to a Queen. Which is definitely a lot worse than a Terror, which in addition has Knight moves and hit-and-run capture. But in the opening it is not so clear-cut. The Eagle has an enormous number of capture targets on a crowded board. If it would initially be worth more than a Terror, and its value would drop as the board gets emptied, there would be a point where the values are similar, and trading would be a good option.

One could argue that even though the Eagle can strike deep behind enemy lines, most of these strikes are useless, because pieces there tend to be protected, and the Eagle is too valuable to be traded for those. And even when the targets are not protected, capturing those is risky: although the Eagle can enter the opponent's camp easily to capture, it cannot easily withdraw to safety afterwards with a non-capture. But it would usually be able to sacrifice itself for a second piece, and two Queen-class pieces might be a good trade for it. Values guestimated by simple move counting doesn't take account of such subtleties.

If the Eagle turns out to be too valuable, it should be subject to an anti-trading rule as well. Or at least the rule that Eagles are also not allowed to capture a protected Terror. I wouldn't mind so much if they capture each other; it is the Terror I want to survive.


H. G. Muller wrote on Tue, Apr 18, 2023 04:06 AM EDT:

@Jean-Louis: I have been thinking about how to name these large chess variants, and want the name to already suggest they are large. One idea for this was using Makromachy or Megalomachy. But since these are obviously inspired by Metamachy, I first want to check with you if you are OK with that.


H. G. Muller wrote on Mon, Apr 17, 2023 03:43 AM EDT:

Only now I notice that in the 14x14 setup white can threaten mate on the first move: 1. i5 ... 2. BAn9#. But this can be easily thwarted by 1... m10. Even if white would manage to back up the Bat by an Eagle (the only other flying piece that can move on the white diagonal), pushing up l11 would provide a second (X-ray) defender of n9 in the Archbishop. Both these 'forced' Pawn moves would be healthy development moves, liberating the Bishop and Dragon Horse. So nothing would be gained by white in pursuing this.

The players would have to be careful not to push their m-Pawn more than a single step, however; this would leave them with little defense against the BAn9/n6 threat. (The Archbishop alone is not sufficent defense, as it is worth more than a Bat, and the Bat would arrive on n6/n9 protected by the Terror.) At least until the l-Pawn gets pushed. After that DHl11 (l6) would provide an alternative defense.

So I don't think this is a problem. It just shows that the presence of the flying sliders keeps the players on edge, even early in the game when the King is still deeply buried. Which was exactly the point for including them. I suppose this is the equivalent of fool's mate in orthodox Chess, where the players have to mind the weakness of f2/f7.


H. G. Muller wrote on Sun, Apr 16, 2023 04:50 PM EDT in reply to Jean-Louis Cazaux from 04:17 PM:

I like it too. Maybe I would consider switching Cannons and Vaos. (To avoid a threat on a11 and n11).

Funny you should say that, because swapping those was actually the last change I made before posting. The threat to a11/n11 is not really a serious threat, right? Those are doubly protected Pawns, with a low-value protector (Knight). And even if they would have been unprotected, b11-b10 (m11-m10) would solve it through a healthy development move. It is probably worse that it also attacks b10/m10, but it is unlikely you would want to put the Knight there anyway.

Besides, the diagonal d1-n11 is not an easy exit for the Vao. It has a Rook in the path, which isn't going anywhere for some time, while moving the Archer would severely compromise the shielding of the noble pieces from flying attack. And the diagonal d1-a4 is blocked by a Warrior that will have a low priority in moving up, and a Dragon Horse, which will likely also be 'stationary developed' by just moving up the c-Pawn. From e1 the Vao could develop along the diagonal e1-a5, where the Knight and Zebra are likely the first pieces that will leave the camp, while b4 will be pushed to let out Ba3. The Vao will then be able to attack the opponent camp from a5, b4, c3 or d2 just as fast as it would be able to attack n11 from d1. But achieved through healthy development moves, rather than cumbersome manoeuvres that only weaken the position.

I worried much more about Cannon attacks. These cannot be solved by simply pushing a Pawn. And the two central files are very vulnerable, with 3 high-value pieces that can be skewered. Even the Bat is worth a Cannon + minor. It was a headache to make sure some minors could be put in front of the Bats in time to block the skewer.


Jean-Louis Cazaux wrote on Sun, Apr 16, 2023 04:17 PM EDT:

I like it too. Maybe I would consider switching Cannons and Vaos. (To avoid a threat on a11 and n11).

I also like the fast castling which seems well suited for these large CV.


H. G. Muller wrote on Sun, Apr 16, 2023 01:11 PM EDT:

A somewhat smaller version (56 pieces instead of 80) could look like this:

satellite=terror4 files=14 ranks=14 promoZone=1 maxPromote=2 promoChoice=Q,M,A,G,RH,CH,CN,V,C,Z graphicsDir=/graphics.dir/alfaeriePNG/ squareSize=35 graphicsType=png theme=DD whitePrefix=w blackPrefix=b borders=0 firstRank=1 useMarkers=1 newClick=1 protected=23 captureMatrix=/"18/19^^^^=/"2 pawn::fmWfceFifmnDifmnH::a4-n4 warrior::fmWfmnnDfceFbhcN:quickpawn:a2-c2,l2-n2 vao::mBpcB::d1,k1 zebra::::d2,k2 camel::::b1,m1 elephant::FA:elephantferz:e3,j3 knight:N:::c3,l3 bishop::::a3,n3 cannon:CN:::e1,j1 champion:CH:WAD::c1,l1 rook::::e2,j2 dragon horse:DH:BW:promotedbishop:b3,m3 dragon king:DK:RF:promotedrook:a1,n1 rhino:RH:[W?fsB]::g1 gryphon::[F?fsR]::f1 archbishop:::cardinal:k3 marshall:::chancellor:d3 queen::::h2 archer:AR:WA::f3,i3 bat:BA:B(paf)12cB::g3,h3 raven:RA:R(paf)12cR:bird2:f2,i2 eagle:EA:Q(paf)12cQ:bird:h1 terror::QNADcamK:dragon:g2 king::KispO9::i1

The piece density has been reduced to 56%. To simplify the learning curve the number of piece types has been reduced from 33 to 24, and apart from the Warriors and the Terror there are no pieces that you would not encounter in other variants. The Ram, Steward, Prince, Frog, Nightrider, Leo and Spearman have been eliminated, and the War Machine has been replaced by the (upward-compatible) Omega-Chess Champion to rebalance minors vs Rook-class pieces. From the 'nobles' the Lion and Amazon were eliminated, and the Eagle and Terror only appear in a single copy.

The initial position is vulnerable, because there are several pieces more valuable than a Cannon directly behind the Pawns (Bishop, Dargon Horse, Bat, Archbishop, Marshall), and Cannon attacks are not so easily disarmed as Vao attacks (where one can interpose a neighboring Pawn). Cannons and Vaos start on the back rank, though, so it will take some time to mount an attack with those. This allows the players to prepare their defenses for such attacks, but puts them under pressure to do this quickly.

The Marshall and Archbishop can simply move away when they get attacked; there is only a Zebra behind them, so they cannot be skewered. The Bats are in serious danger, though, as the most valuable pieces shelter behind those from flying attack. It is important here to prepare robust interposition of low-valued pieces to block Cannonattacks on them. After moving up the center Pawns the Zebras and Elephants can be used for this, and can be 'secured' by Vao or Champion protectors.

The Eagle (flying Q) has been moved to the back rank, to provide an extra protector for all other pieces there. So only the flying R (renamed to Raven as a mnemonic for this) requires an aerial blocker to prevent immediate trading, and the Archer (WA) satisfies that need.

The d-, e-, j- and k-files can be used for developing orthogonal sliders, the short diagonals from f1 and h1 for diagonal sliders. The Griffon and Rhino are placed behind the shield of flying pieces so that they can smoothly slide onto those rays. The King is placed off-center to get the Dragon King with which it (fast-)castles next to such an 'exit corridor'.

The Warriors now only have to move up a single step to join the Pawn wall, which then still leaves their backward Knight captures cover the back rank. This might be a good way to build a 'cannon-proof' castle for the King.


H. G. Muller wrote on Thu, Apr 13, 2023 04:57 PM EDT in reply to Joe Joyce from 03:43 PM:

Would it break the game to allow 2 moves/player after white's initial turn 1 single move?

Probably not more than it would break most other variants.

But the goal was to design something with the character of Chess, but (much) larger. Introducing weirdness that has no bearing on size only makes it more alien. Perhaps the Terrors, with their hit-and-run capture and anti-trading rule are already too much.


Joe Joyce wrote on Thu, Apr 13, 2023 03:43 PM EDT:

Would it break the game to allow 2 moves/player after white's initial turn 1 single move?


H. G. Muller wrote on Thu, Apr 13, 2023 09:35 AM EDT in reply to Aurelian Florea from 05:22 AM:

Indeed, I agree with what you say here. I like to have a better balance between light and heavy pieces. It is easier to gain a weak piece than a strong one, and if there are too few weak pieces (or none left) then it becomes difficult to increase your advantage. This is one of the reasons end-games without Pawns are so drawish.

The large Shogi variants are overdoing it, though, by having too many excessively weak pieces (like the Shogi Knight, or Stone General, with just two moves). And many of the somewhat stronger pieces are steppers, which take a long time to move to where the action is. There is something to be said for Camels and Zebras on large boards!

I am starting to feel quite good about this latest setup. I should still play test it though, at the very least as computer self play. I can try to make the Diagram play against itself, but I am not sure it would be strong enough at affordable thinking times.


Aurelian Florea wrote on Thu, Apr 13, 2023 05:22 AM EDT:

@HG,

A long time ago you have told me in the context of Grand Chess that having more heavy pieces shorten the game. That is true both there and here. But from my experience it takes a lot more to proper calculate when many heavy pieces are present. This gives to me rather a sentiment of randomness. To do it right you need a lot of time each turn even for computers. I want to argue that although having a lot of heavy pieces shortens the game as number of turns, it does not on time on the clock. That being said, you have made a nice pyramid here. But I do hold against Grand chess that is has few light pieces.


Bull's eye[Subject Thread] [Add Response]
🕸Fergus Duniho wrote on Wed, Apr 12, 2023 01:19 PM EDT in reply to Gerd Degens from 11:46 AM:

It doesn't need a subject thread, because it already has a page, and you can post comments to the page.


Gerd Degens wrote on Wed, Apr 12, 2023 11:46 AM EDT in reply to Fergus Duniho from 11:30 AM:

You don't need to create a new subject thread when you can just post a comment to the page in question

I beg your pardon, but I do not understand your post.
It is about a new proposal for a variant called 'Bull's eye', for which there is no subject thread yet. Then the only option is to create one. Or?


Huge variants[Subject Thread] [Add Response]
H. G. Muller wrote on Wed, Apr 12, 2023 11:39 AM EDT in reply to Jean-Louis Cazaux from 08:41 AM:

Well, the Vaos were put there for a reason: to prevent diagonal attack on the Falcon and Eagle (flying R and Q) behind them while the latter have no room to move yet. The Interactive Diagram estimates the value of Falcon and Eagle similar to Lion and much better than Amazon, respectively, while the Bat, which could make such attacks, is estimated as weaker than a Nightrider or Dragon King. E.g. 1. l7 followed by 2. ARi6 would threaten 3. BAp9, gaining more than the value of a minor. (Or BAo8 after protecting that square, to gain more than a Queen value.)

I understand the principle of not allowing the Vao to quickly trade itself for something more valuable. I always considered the hoppers only about half as valuable as the corresponding sliders, which would make the Vao worth much less than a typical minor. If I should believe the heuristinc of the Interactive Diagram, the situation is different on 16x16, though. (I have no empirical values for 16x16.) And this stands to reason: the Vao (as well as Cannon) is an unlimited-range piece, and the value of such pieces should go up with the board size relative to the short-range leapers. According to the Diagram the value of the Vao is about equal to that of Knight, Camel, Zebra, Elephant, Frog.... (The Bishop, being a slider, is of course worth much more.) So there is no advantage in quickly trading a Vao for any of those.

On the contrary; the Diagram estimates piece values at a total piece density of 25%, and the value of hoppers tends to decrease towards the end-game. So in the opening, with a piece density of over 50%, the Vao would probably be worth significantly more than any minor, with the exception of the Bishop. This is basically the same argument as why it is bad to play 1.CxH in Xiangqi.

So I think having the Vaos hitting the opponent camp in the initial position is no longer a problem in a variant this large. As long as there aren't many very valuable pieces directly behind the Pawns.


Bull's eye[Subject Thread] [Add Response]
🕸Fergus Duniho wrote on Wed, Apr 12, 2023 11:30 AM EDT in reply to Gerd Degens from 09:22 AM:

You don't need to create a new subject thread when you can just post a comment to the page in question.


Gerd Degens wrote on Wed, Apr 12, 2023 09:22 AM EDT:

I would like to present my new variant 'Bull's eye' for discussion.

I cannot say whether a mechanism of this kind already exists.


Huge variants[Subject Thread] [Add Response]
Jean-Louis Cazaux wrote on Wed, Apr 12, 2023 08:41 AM EDT:

My experience with Vaos is to avoid putting them on a 2nd row, and also avoid a non-central place on the 3rd row from where they can capture too early. I would put them on h3/i3 for example, or on the 4th row.


H. G. Muller wrote on Wed, Apr 12, 2023 04:56 AM EDT in reply to Aurelian Florea from 02:08 AM:

OK, so this is a revised 16x16 setup:

satellite=terror3 files=16 ranks=16 promoZone=1 maxPromote=2 promoChoice=EA,AM,G graphicsDir=/graphics.dir/alfaeriePNG/ squareSize=35 graphicsType=png theme=DD whitePrefix=w blackPrefix=b borders=0 firstRank=1 useMarkers=1 newClick=1 protected=32 captureMatrix=/"27/27^^^^^=/"2 pawn::fmWfceFifmnDifmnH::a5-p5 warrior::fmWfmnnDfceFbhcN:quickpawn:a2-d2,m2-p2 ram:RM:mgQcfD::c1,n1,h1,i1 steward::mWcF::b4,o4 vao::mBpcB::g4,j4 camel::::d3,m3 zebra::::e3,l3 war machine:D:WD:warmachinewazir:d4,m4 elephant::FA:elephantferz:a4,p4 frog::FH::d1,m1 prince:PR:KfmnD:duke:b3,o3 knight:N:::e4,l4 bishop::::c4,n4 cannon:CN:::e1,l1 rook::::a3,p3 leo:LE:mQpcQ:paovao:c3,n3 nightrider:NR:::b1,o1 dragon horse:DH:BW:promotedbishop:e2,l2 dragon king:DK:RF:promotedrook:a1,p1 rhino:RH:[W?fsB]::k2 gryphon::[F?fsR]::f2 archbishop:::cardinal:g1 marshall:::chancellor:i2 queen::::j1 lion::KNAD::h2 amazon:AM:QN::f1 archer:AR:WA::f4,k4 spearman:SM:FD:nspearman:h4,i4 bat:BA:B(paf)14cB::g3,j3 falcon:FA:R(paf)14cR:bird2:f3,k3 eagle:EA:Q(paf)14cQ:bird:h3,i3 terror::QNADcaK:dragon:g2,j2 value=2500 king::KispO9::k1

I moved the Warriors up to the 2nd rank, so they make a pre-fabricated 'pawn shield' for the King. The backward Knight captures of the Warriors are then quite useful: they protect the part of the back rank that is not shielded from attacks by the flying pieces. When an Eagle or Falcon (flying Q or R) could capture an unprotected piece there, this would deliver checkmate! So it is important that the entire back rank remains sufficiently protected against aerial intrusion.

The Warriors also provide solid protection of the pieces in front of them, on 3rd rank. They start heavily protected themselves, by putting a Prince in front of them, a Dragon King behind, and a Dragon Horse besides them, while also the Knight, Nightrider, Elephant, Rook, Frog, Archer and War Machine contribute to their defense. The Prince also helps protecting the minors on 4th rank. A strategically placed Leo initially protects three back-rank pieces and 3 Pawns.

I moved the Frog to the back rank, to provide more protection for the piece in the corner. Normally I would put minors in the most advanced locations. But the 4th rank cannot contain all of those anyway, and the Frog can move forward pretty fast through its 3-leap (which initially protects the otherwise unprotected War Machine).

So on the back-rank a1 is protected by Warrior (c2), Frog and Leo, b1 by Warrior (d2), Dragon King and Zebra, c1 by Warrior (a2), Leo and Cannon, d1 by Warrior (b2) and Leo, e1 by Warrior (c2), Dragon Horse, Amazon and Bat. The Frogs at d1/l1 thus are the weakest spots. Extra protectors can be arranged for them after the Zebra or Camel have been developed: a War Machine or Leo at d3, or moving the Falcon to e3 to discover the Vao.

With such a compact setup the pieces must not obstruct each other's development too much. The idea here is that the e- and l-file can be used as an exit corridor from the camp for orthogonal sliders, and the diagonals f1-a6 and k1-p6 for diagonal sliders. The Knight and Zebra on these files, and the Camel on these diagonals can all leave the camp in a single move, to quickly clear the corridors. The Bishop and Dragon Horse already start on these diagonals, and the Cannons on the files. The Griffon and Rhino are set up to slide into the file or diagonal, respectively. After the latter are gone, a second diagonal can be cleared by developing the War Machine, allowing Queen and Archbishop to deploy. The Lion and Chancellor can be developed through their Knight jumps, when some space on 4th rank becomes available.

The King was moved to the back rank, to allow it to (fast-)castle to behind the Warrior shield. With the King on a central file the corner piece would end deeply burried after fast-castling, though. To prevent that, the King was placed quite asymmetrically, on the k-file, and the corner pieces were made Dragon Kings rather than Rooks. Fast castling would then transport the Dragon King to k1, just beside the intended exit file, which it can reach even without clearing away the Cannon.

The Rams were all placed on the back rank. Like the Warriors these are pieces intended for use later in the game, to break through Pawn chains that have been formed. Their Grasshopper non-captures should allow them to get out and to the front line easily and quickly, once the camp is mostly cleared. The pieces behind the Warriors are mostly jumping pieces (Nightrider, Ram, Frog) so they can leave without the need to compromise the wall of Warriors.

The Advancer capture I gave to the Terror might be too strong. On a sparsely populated board there would usually be no defense against it other than moving a threatened piece away. And the forking power of a Queen is such that you could almost always attack multiple pieces. So the game would degenerate into a giant plunder raid. Good for shortening it, but probably not very much fun, as the outcome would be almost impossible to predict, and thus depend mainly on luck. I therefore changed the 'super ability' of the Terror (i.e. what it has over a normal Queen) to hit-and-run capture on an adjacent square through a double King move. (But no double capture; the second leg must be a non-capture to another square than where the Terror came from!) This makes the possibility for threatening two pieces with locust capture dwindle when the board gets empty, and thus allows defense by moving away the threatened piece.

I don't think the (for chess) unusually high piece density hurts a lot, because the Warriors are best kept in reserve until the board population thins enough to have a chance to promote them. And using the Rams early in the game is also troublesome: they would hardly contribute fire power, and would take many more moves to reach the frontline on a crowded board than on a sparsely populated one. So 12 of the 80 pieces will initially not compete for the available space in the battle area, reducing the effective density to a more normal 53%.


Aurelian Florea wrote on Wed, Apr 12, 2023 02:08 AM EDT in reply to H. G. Muller from Tue Apr 11 11:37 AM:

I also think the 16x16 is better. There are plenty of leapers and jumping pieces. You have to have a defense against them and a more closely packed initial army helps that. Also I think you should not be worried to much about the pawn-warrior combo as there are pieces that can jump over. Camel for example. The exchange of a three points minor for pawn+warrior also makes things ok!


Daniel Zacharias wrote on Tue, Apr 11, 2023 04:00 PM EDT in reply to H. G. Muller from 11:37 AM:

I think the 16x16 board looks better. It seems less arbitrary than the 18x18 with lots of irregular gaps in the setup.


H. G. Muller wrote on Tue, Apr 11, 2023 11:37 AM EDT:

After considering several other possibilities, I think the best solution to avoid that the Warrior can be used to strengthen a Pawn wall to create an almost unbreakable barrier is to make it more valuable. If Warrior + Pawn are worth more than a typical minor, having a Pawn protected by a Warrior isn't problematic when you bring enough attackers to bear on the Pawn. By giving the Warriors the same diagonally forward capture as a Pawn, it cannot be used to increase the number of low-valued protectors of a Pawn to what it already could be by protecting it with Pawns.

To increase the value without destroying the pawn-like character (i.e. binding to a file, irreversible move) one can endow it with extra captures. The backward Knight captures are suitable for this: these cannot easily be used for strengthening a Pawn chain, as the Warriors cannot overtake Pawns in the same file.

It appears adding the backward half of the Knight captures to a (Metamachy) Pawn is enough to increase the value of a Warrior to slightly over 2 Pawns. A closed wall of Pawns set up on the 2nd rank, used to shield the King, would not behave very differently from the normal Pawn shield.

I am still 'on the fence' for whether 16x16 with high piece density or 18x18 with a more normal density would be better. It seems natural do push Pawns and develop the minors first, and this would automatically create manoeuvring room for the noble pieces behind those. Starting with many empty squares in the camp makes it much more difficult to maintain the threat of a suffocated mate, and thus decreases the usefulness of the flying pieces.


Jean-Louis Cazaux wrote on Sun, Apr 9, 2023 05:35 PM EDT in reply to H. G. Muller from 02:59 PM:

That is true.


H. G. Muller wrote on Sun, Apr 9, 2023 02:59 PM EDT in reply to Jean-Louis Cazaux from 02:52 PM:

Well, the idea is not really original, because it is what Maka Dai Dai Shogi does as well.


Jean-Louis Cazaux wrote on Sun, Apr 9, 2023 02:52 PM EDT:

Thanks for answering. It's a nice design. About the large distance between the front rows on a very large board, I agree with you. You say "An alternative would be to not completely pack the armies in the initial setup, but starting them in a more advanced position in a more vacuous setup." That's funny because this is exactly what I was thinking about since yesterday evening :=)


H. G. Muller wrote on Sun, Apr 9, 2023 09:50 AM EDT:

This is how it would look (with almost the same piece set) on 18 x 18, to reduce the density to a for Chess more normal 50,6%. The Grasshoppers were abandoned, and replaced by Rams (which move as a Grasshopper, but have only a single forward Dababba capture). The Warriors now are Metamachy Pawns, and I added two more (so there now are 24 promotable pieces), to compensate for those that will be traded for Rams.

satellite=terror2 files=18 ranks=18 promoZone=1 maxPromote=2 promoChoice=EA,AM,G graphicsDir=/graphics.dir/alfaeriePNG/ squareSize=33 graphicsType=png theme=DD whitePrefix=w blackPrefix=b borders=0 firstRank=1 useMarkers=1 newClick=1 protected=32 captureMatrix=/"27/27^^^^^=/"2 pawn::fmWfceFifmnDifmnH::a6-r6 warrior::fmWfceFfmnnD:quickpawn:a2-d2,i2,j2,o2-r2 steward::mWcF:: ram::mgQfcD::a4,b3,q3,r4 vao::mBpcB::h5,k5 camel::::h4,k4 zebra::::c4,p4 war machine:D:WD:warmachinewazir:d5,o5 elephant::FA:elephantferz:a5,r5 frog::FH::f5,m5 prince:PR:KfmnD:duke:b5,q5 knight:N:::e5,n5 bishop::::c5,p5 cannon:CN:::e4,n4 rook::::b1,q1 leo:LE:mQpcQ:paovao:d3,o3 nightrider:NR:::c1,p1 dragon horse:DH:BW:promotedbishop:d1,o1 dragon king:DK:RF:promotedrook:f1,m1 rhino:RH:[W?fsB]::l1 gryphon::[F?fsR]::g1 archbishop:::cardinal:h2 marshall:::chancellor:k2 queen::::k1 lion::KNAD::h1 amazon:AM:QN::i1 archer:AR:WA::i5,j5 spearman:SM:FD:nspearman:g5,l5 bat:BA:B(paf)14cB::h3,k3 falcon:FA:R(paf)14cR:bird2:g3,l3 eagle:EA:Q(paf)14cQ:bird:i3,j3 terror::QcyavmQ:dragon:g2,l2 value=2500 king::KispO7::j1

The battle area is still 6 ranks deep, and the extra space is located inside the camps. This was done in such a way to create ample space for lateral movement of the orthogonal sliders, and leave corridors for developing the valuable pieces that start in the rear.

Since the variant uses fast castling, one can castle immediately to the open space on the back rank. But early castling seems suicidal; one would first have to build a shield against flying attacks at the desired location of the castle.


H. G. Muller wrote on Sun, Apr 9, 2023 06:23 AM EDT in reply to Jean-Louis Cazaux from Sat Apr 8 02:40 PM:

Why renaming the Kirin and Phoenix?

I never liked the name 'Kirin' very much. (It is meaningless to westerners.) And 'Phoenix' collided with the naming theme, as I wanted to reserve bird names for the pieces with 'flying capture'. The flying Q and R needed to be separated by some low-valued obstacle to prevent they would attack each other in a symmetric initial setup. And I did not like to stack them behind the flying B, as that would leave the suffocated King and Terrors exposed to frontal flying attack. Ground-based units that are able to interfere with overflying birds must use projectile weapons, which led me to Archer and Spearman. (I would have liked Crossbow instead of the latter, but that was not in the alfaerie set.) One excuse for renaming is that in this game they are not 'normal' Phoenix and Kirin, but passively guard the skies as well, unlike any other non-flying piece.

Also the board is very dense, more than the 50% I'm used to work with. I don't know if this is a factor favorizing shorter games.

I guess this is a Shogi influence that trickeled into the design, as there filling can be near 67%. How this affects game length is a subtle issue. More pieces tends to increase the length, larger (and especially deeper) board would too. With 50% density the 80 pieces that I have would require 18x18 rather than the 16x16 I used, but switching to 18x18 would leed to longer games. Decreasing the number of pieces to 64 would shorten the games. But this would be at odds with the goal for making a huge variant. I guess it depends on what you use as the metric for the size of chess variant: number of pieces or board size. For a given number of pieces high density shortens the typical game by more intense combat.

As I mentioned, it is mainly the depth of the board that counts. Or even more accurately, the initial distance between the armies. I dislike distances of more than 6 ranks; this drags out the opening phase, just to transport the army to where they can engage the opponent. For ~80 pieces you would need to have a 27x12 board to get 25% fill (each army 3 filled ranks, and 6 ranks in between). This seems too extreme. (Although it would solve the problem of Pawn scarcity.)

An alternative would be to not completely pack the armies in the initial setup, but starting them in a more advanced position in a more vacuous setup. E.g. use 18 x 18, but spread the 80 pieces over the 108 squares of the first 6 ranks for a 49.4% overall filling. That would leave ample free space within the camps to quickly develop pieces that started in the rear. So perhaps this is the superior solution. It would make the appearance quite different from the giga-tera-exo series. But I like the idea!

I'm not fully convinced that it is necessary to forbid the Warrior to capture normally. Warrior is maybe not a good name if it doesn't fight much.

Good point. This was an (admittedly ugly) solution to the problem that a Pawn protected by another Pawn cannot be eliminated without incurring a loss when you can only attack it with pieces that are worth more than 2 Pawns, no matter how many attackers you bring to bear. The only viable way to threaten it is with another Pawn. Which takes a long time when these Pawns have to cross a large board to get there.

Now the Terror can pick off protected Pawns with its Advancer capture mode. But against a closed rank of Pawns Advancer capture does not end on a safe square. So if a player can support the foremost Pawns on their original rank by moving up another wall of (diagonally capturing) pawns directly behind it, it would either take large sacrifices to break through it even with the help of Terrors, or very many moves to organize a Pawn storm.

Of course this is a self-inflicted problem, due to having multiple pawn-like pieces in the same file. But I wanted to include some 'spare' promotion ability, and the pieces providing that would have to be placed somewhere. One way to solve it would be to make the Warriors more powerful, and therefore more valuable, so that Warrior + Pawn is worth more than a typical minor, and capturing a Pawn protected by a Warrior with an abundance of attackers no longer is a sacrifice. But I don't want this extra power to result in the ability to find an easy path to promotion. This could be done by giving it extra captures, but I also don't want such low-valued pieces to be able to mutually protect each other, as this would allow them to form hard-to-break defensive structures all by themselves. Pieces with many captures and few non-captures tend to favor defense over attack.

An alternative would be to provide sufficiently many pawn-valued pieces that can capture into a tightly knit double wall of pawns with disregard for its own survival. And that do not take a long time to cross the board. My original idea was that the Grasshoppers would satisfy this role. But it seems they are too strong, and too easily find prey amongst the opponent's more valuable pieces. The requirement of fast movement and low value is somewhat contradictory, but Grasshopping does provide it. True Grasshoppers have much to dangerous captures, though. So perhaps a divergent piece that moves as Grasshopper, but captures as a (forward) Alfil (or even Dababba) would do it ('Ram'?).

Adding extra pieces to specifically destroy pawns seems to defeat the purpose of adding extra promotable pieces, though. Unless there are fewer of those. I suppose this is justifiable, because the attacker can choose its point of attack, while a defender would have to keep up the defense everywhere. So 16 Pawns, 8 Warriors and 4 Rams might be a good mix.

If the Warriors become more or less normal Pawns, they could be started in the wings of the 2nd rank, with King & Rooks on the 1st rank, so that castling would produce a normal King fortress after the pieces starting in front of it have left to engage in battle.


Jean-Louis Cazaux wrote on Sat, Apr 8, 2023 02:40 PM EDT:

Nice. At first sight, the learning curve is important for me with 33 different pieces. Also the board is very dense, more than the 50% I'm used to work with. I don't know if this is a factor favorizing shorter games. There are some pieces I like, some I'm less easy with (Nightrider, Grasshopper),some I never used at all. The flying ones seems very nice in this context. Did you consider to use other Japanese pieces such as the burning ones or the hook movers? Why renaming the Kirin and Phoenix? I'm not fully convinced that it is necessary to forbid the Warrior to capture normally. Warrior is maybe not a good name if it doesn't fight much. Have you run some games of it? How many moves did you get typically?


H. G. Muller wrote on Sat, Apr 8, 2023 10:42 AM EDT in reply to Max Koval from 09:23 AM:

The Eagle must indeed be worth significantly more than a Queen. (Although in the late end-game its advantage would disappear.) But you would use it to attack the King, which is worth the game. A Terror would probably also be more valuable. You would not waste it on any lesser piece.

Dababbariders would not be dangerous for a King hiding behind 4 rows of pieces.


Max Koval wrote on Sat, Apr 8, 2023 09:23 AM EDT in reply to H. G. Muller from 08:48 AM:

I think it may suit the purpose to also include some Dabbaba-riders or something like that. I never played a game which uses flying pieces, so I dilettantly assume that the Eagle is too valuable to use it for an explicit attack unlike DR which can control only a quarter of the board space, and so can be forcibly exchanged for something more valuable. I think it can be more efficient to use such types of pieces, rather than expanding new rules which govern their relations (#2).


H. G. Muller wrote on Sat, Apr 8, 2023 08:48 AM EDT:

OK, I want to try my hand at designing a really large chess-like variant too. The goal is to distinguish it from other variants that use a massive army on a large board by typically having shorter games. For this purpose it implements some features that I have been lobbying for to accelerate a game: flying pieces that put the King at risk even in the stage where it still hides behind a massive army, and some very destructive pieces that are subject to an anti-trading rule, to longer preserve the offensive power of the armies:

  • Eagle, Falcon and Bat are 'flying pieces' (moving as Q, R, B): they can jump over arbitrary many pieces in their path for checking or capturing.
  • They cannot jump over each other, though, and can also not jump over the (low-valued) Archer or a Spearman. All these pieces can capture each other, even when jumping.
  • The Terrors move and capture like a Queen, but can also perform hit-and-run capture, by making an extra step (forward or backward) along the same ray to an empty square after they capture.
  • Terrors cannot capture each other, unless the attacking Terror is completely safe afterwards (like it was a King).
  • Pawns and Warriors promote upon reaching last rank, to Eagle, Amazon or Griffon.
  • Fast castling can be used to move a King to the wings.
  • Pawns can initially slide 2 or 3 steps forward to an empty square.

I post this as a comment before submitting it as an article because the design is still tentative, and I hope to get some feedback. I am for instance not very happy with the inclusion of the Steward. It is so much like a Pawn. But I did want a weak (but interesting) piece. Perhaps I should use a Checkers King instead (mFcafmF)?

The concept of flying pieces emulates a two-level board (ground and sky), where a ground battle is conducted on a densely populated board in parallel with an aerial battle on a thinly populated board, and air-to-surface strikes are always possible, but only a few units are capable of shooting down aireal targets.

satellite=terror files=16 ranks=16 promoZone=1 maxPromote=2 promoChoice=EA,AM,G graphicsDir=/graphics.dir/alfaeriePNG/ squareSize=35 graphicsType=png theme=DD whitePrefix=w blackPrefix=b borders=0 firstRank=1 useMarkers=1 newClick=1 protected=32 captureMatrix=/"27/27^^^^^=/"2 pawn::fmWfceFifmnDifmnH::a5-p5 warrior::fmWfmnnDfkeF:quickpawn:a1-d1,m1-p1 value=60 steward::mWcF::d3,m3 grasshopper:GH:pyafQ3::b2,c2,n2,o2 vao::mBpcB::e2,l2 camel::::b3,o3 zebra::::c3,n3 war machine:D:WD:warmachinewazir:d4,m4 elephant::FA:elephantferz:a4,p4 frog::FH::a3,p3 prince:PR:KfmnD:duke:b4,o4 knight:N:::e4,l4 bishop::::c4,n4 cannon:CN:::e3,l3 rook::::a2,p2 leo:LE:mQpcQ:paovao:g4,j4 nightrider:NR:::e1,l1 dragon horse:DH:BW:promotedbishop:d2,m2 dragon king:DK:RF:promotedrook:f1,k1 rhino:RH:[W?fsB]::j1 gryphon::[F?fsR]::g1 archbishop:::cardinal:g2 marshall:::chancellor:j2 queen::::i1 lion::KNAD::h1 amazon:AM:QN::h2 archer:AR:WA::f4,k4 spearman:SM:FD:nspearman:h4,i4 bat:BA:B(paf)14cB::g3,j3 falcon:FA:R(paf)14cR:bird2:f3,k3 eagle:EA:Q(paf)14cQ:bird:h3,i3 terror::QcyavmQ:dragon:f2,k2 value=2500 king::KispO6::i2

Some of the ideas on which I based the design:

Most of the pieces I used belong to the set of 'more intuitive' fairy pieces that also feature in the family of 'Cazaux variants'. I supplemented those with the Terrors and the flying pieces, tailored for their job as 'game accelerators'.

I tried to keep close to the 'value spectum' of orthodox Chess, where a next-lower value class has double the number of pieces. So I have 30 Pawn-class pieces (Pawn, Warrior, Steward, Grasshopper), 24 minors (Knight, Bishop, Camel, Zebra, Elephant, War Machine, Cannon, Vao, Prince, Frog, Archer, Spearman), 12 Rook-class pieces (Rook, Nightrider, Dragon Horse, Dragon King, Leo) 6 Queen-class pieces (Archbishop, Marshall, Queen, Griffon, Rhino, Lion) 1 Amazon. The flying pieces would probably be Queen class or higher, and the 2 Terrors would top everything.

I did include Nightriders, which are a bit less intuitive. But after all, "The night is dark, and full of Terrors!".

Compared to orthodox setups massive armies tend to be relatively short on Pawns. This brings the risk of the Pawns getting exterminated in the heat of battle, before the board population has thinned enough for them to promote. The game then would become slow (or even drawish) for lack of promotable pieces, which are the main 'amplifiers' for an otherwise non-decisive advantage. I tried to cure that by including the Warriors as a 'second wave' of promotable pieces.

I did want to preserve the principle of 'passed Pawns', and thus avoid Berolinas and other Pawn types that can easily change file. So the Warrior can only non-capture straight ahead, but it can slide two squares in this direction on any rank. This extra speed is of no use, though, as long as there still is a normal Pawn in front of the Warrior, obstructing it.

To prevent building of an almost impenetrable double wall of pawn-like pieces, the Warriors have no normal capture. They can check and e.p. capture like a normal Pawn.

As other pieces in the lowest value class I included Grasshoppers. But to prevent forking threats in the opening I severely limited their range.

The flying pieces can be used to shelter the King and other valuable pieces from flying attack. But they need to be able to shelter from such attack by lower-valued flying pieces themselves. For this purpose the two most exotic minors (Archer and Spearman) were given the power to block flying pieces.

In the initial setup the most-valuable ('noble') pieces shelter behind a wall of flying pieces. The latter again shelter behind Archers and Spearmen, or a relatively low-valued Leo, which would counter-attack the source of any flying attack over it.

Diagonal flying attacks that go behind this shield can only come from an area that is so close by that is can be easily controlled (by Pawns or Elephant).

All Pawns are protected in the initial setup.

The rank behind the Pawns does not contain any noble pieces. So threats from pieces that could reach there (Nightrider, Cannon) need not be feared.

The minors are placed on 4th rank such that they don't compete too much for a place to develop them on 6th rank.

The pieces that are present in only a single copy, and thus necessarily cause asymmetry in the setup, were all placed in the central 4x2 area around the King.

Since the Eagle is upward compatible with all flying pieces and hoppers, and the Amazon with most other pieces, it did not seem very useful to allow promotion to other pieces. But perhaps I should allow promotion to any non-royal, just for simplicity.


Conquer the opponent's army[Subject Thread] [Add Response]
Gerd Degens wrote on Wed, Mar 29, 2023 10:54 AM EDT:

I would like to present my new variant Conquer the opponent's army for discussion.


Ready[Subject Thread] [Add Response]
🕸Fergus Duniho wrote on Sat, Mar 25, 2023 12:27 PM EDT in reply to Ruei Ching Hong from 09:41 AM:

It's best to leave comments like this on the page for your game. That way, the page in question is just a click away when we see this.


Ruei Ching Hong wrote on Sat, Mar 25, 2023 09:41 AM EDT in reply to Ruei Ching Hong from 09:40 AM:
It's about my new game.

Ruei Ching Hong wrote on Sat, Mar 25, 2023 09:40 AM EDT:
It's ready now.

Radioactive Queen Chess[Subject Thread] [Add Response]
Diceroller is Fire wrote on Sun, Mar 19, 2023 04:12 PM EDT:

Ready


A Farewell[Subject Thread] [Add Response]
🕸Fergus Duniho wrote on Sat, Mar 18, 2023 09:11 AM EDT:

I rewrote the Who page to better describe what powers the editorial staff have, and I moved Joe Joyce to a section for Emeritus Editors.


🕸Fergus Duniho wrote on Sat, Mar 18, 2023 07:35 AM EDT in reply to Diceroller is Fire from 03:22 AM:

Who is the youngest editor of chessvariants?

Maybe I am.

You're not an editor. You're a contributor. An editor has the power to edit and approve contributions made by other people. Editors are much fewer in number, and among active editors, I believe that Ben is the youngest.


Overwhelming Chess[Subject Thread] [Add Response]
Diceroller is Fire wrote on Sat, Mar 18, 2023 03:30 AM EDT:

Ready


A Farewell[Subject Thread] [Add Response]
Diceroller is Fire wrote on Sat, Mar 18, 2023 03:22 AM EDT:

Small question. Who is the youngest editor of chessvariants?

Maybe I am.


🕸Fergus Duniho wrote on Thu, Mar 16, 2023 09:17 AM EDT in reply to Joe Joyce from 02:51 AM:

Joe,

I don't know the age of every editor, but among those I do, you are the oldest. Hans and I were both born in the 60s, and David was born in the 50s, but you were born in the 40s just a bit before my youngest aunt and uncle. So, thank you for sticking with being an editor here for so long.

Many editors here have not been programmers, because editing is a different task than programming, and non-programmers can also do it. The main advantage that programming can bring to editing is that people with experience programming Chess variants will be more sensitive to gaps, inconsistencies, or ambiguities in the rules of games, as programmers need to understand a game fully in order to program it. But it also comes with the drawback that they may rather spend their time programming than editing. There is a reason why I have chosen the title of Webmaster rather than Editor-in-Chief, as Hans and David had used before me. So, it's good to have editors who are not as focused on programming as some of us are and are willing to take the time to read and edit new submissions.


Joe Joyce wrote on Thu, Mar 16, 2023 02:51 AM EDT:

This past weekend I was up in Boston with the family to celebrate 2 birthdays. Saturday our grandson was 1 year old, and Monday I was 75. And while I don't want my name removed from the editors' list, it's more than time to put "retired" next to it. I haven't been an active editor for some time now. And I don't program. All the other editors do. I originally volunteered not because I thought I was qualified but because no one else had volunteered and somebody had to do it or watch the site fade. I'm very happy to see it hasn't faded.

Being a member of this site has been a lot of fun, and while being an editor has been a lot of work, I learned a lot about game design during the time. I continue to design, but have expanded my areas of interest. Still, every time I think I'm done with chess variants, something drags me back. Maybe one of these times, I'll get chesimals right.

I've met a lot of good designers, made a fair number of friends and acquaintances, and stepped on a few toes. For the damaged digits, I apologize. For all the others, thank you. I cannot begin to mention names, because there are so many people it would be daylight in New York before I finished. And no matter how hard I tried, I'd leave out a few. It's been a fascinating time. I've met an amazing range of interesting people, in all senses of the word. I feel quite fortunate.


Hopping Sliders[Subject Thread] [Add Response]
Bn Em wrote on Mon, Mar 6, 2023 08:33 PM EST:

While browsing I came across another couple of games with ski‐sliders: Quang Trung Chess has a ski‐rook from its third edition (except the fourth, where it's a ski‐queen); the comments on the 4th‐ed. page here also reveal Snark Hunt's Boojum, also a ski‐queen (and its Snark, which moves as either king or boojum but demotes to the latter when moving as such)


Diagram testing thread[Subject Thread] [Add Response]
Kevin Pacey wrote on Mon, Mar 6, 2023 05:12 PM EST in reply to Daniel Zacharias from Sun Mar 5 11:09 PM:

Below is a diagram of my first attempt to improve the setup of what I called (24x8) Bureau-Spiel; Fast Castling rules like used for my already published Wide Chess CV, and FIDE pawn rules - we can study it at our leisure:

diagram

Daniel Zacharias wrote on Sun, Mar 5, 2023 11:09 PM EST in reply to Kevin Pacey from 07:09 AM:

I hadn't actually thought of an exact re-arrangement of the back ranks to my liking, but at least the way some of the diagonal-capable pieces of each army were pointing may not have been ideal possibly (don't know what new setup to suggest/try for sure yet, unless I think of some things that are specific).

I recall your caption for the diagram said 'Just for fun', but in the past I've dreamt up some pretty wide CV invention ideas with 8 ranks myself.

If you come up with a setup that's satisfactory I'd be interested in playing it.


Kevin Pacey wrote on Sun, Mar 5, 2023 07:09 AM EST in reply to Daniel Zacharias from Sat Mar 4 10:25 PM:

@ Daniel.

The image I just gave is the same as your suggestion a month ago in this thread - I tried to quote it but somehow only got the diagram part.

I hadn't actually thought of an exact re-arrangement of the back ranks to my liking, but at least the way some of the diagonal-capable pieces of each army were pointing may not have been ideal possibly (don't know what new setup to suggest/try for sure yet, unless I think of some things that are specific).

I recall your caption for the diagram said 'Just for fun', but in the past I've dreamt up some pretty wide CV invention ideas with 8 ranks myself.

edit: @ Myself (or anyone curious): A list of the dates and places on CVP site that I've left key comments/diagrams about (28) CV invention ideas of mine, that I might make preset(s) for at some point if I stop rejecting all the CV ideas:

To the 'Diagram Testing Thread': 2023-03-06, 2023-02-01, 2023-01-31, 2023-01-17, 2020-12-31,2020-12-16, 2020-12-15, 2019-02-16

To the 'Parity Chess' preset page: 2018-11-30

To the 'Frog Chess' rules page: 2017-11-25

To the 'Courier-Spiel' rules page: 2019-09-29

Finally, to the 'Amazon Grand Chess' rules page: 2019-12-14

edit2: 2023-12-29: I now have (28) preliminary Settings Files made for all these CV ideas, which can act as presets, especially for members able to recognize fairly common fairy piece figurines, as used on CVP site's Game Courier. One way these Settings Files of mine can be found is on my Personal Information page on CVP (just explore the list, for ones that seem interesting).


Daniel Zacharias wrote on Sat, Mar 4, 2023 10:25 PM EST in reply to Kevin Pacey from 05:27 PM:

I don't see a difference. Is that the right image?


Kevin Pacey wrote on Sat, Mar 4, 2023 05:27 PM EST in reply to Daniel Zacharias from Wed Feb 1 10:23 PM:

 

Hi Daniel. I think I'd call this 'Bureau-Spiel, but rearrange the back ranks a bit in the setup.diagram


ChatGPT[Subject Thread] [Add Response]
Aurelian Florea wrote on Fri, Feb 24, 2023 11:52 AM EST:

I too did try chatGPT. Here is part of what it said when trying to provide it the basics of my Grand Apothecary Chess games :

It seems like a very interesting and complex game with a lot of unique pieces and promotion options for the pawns.


Diagram testing thread[Subject Thread] [Add Response]
Daniel Zacharias wrote on Wed, Feb 1, 2023 10:23 PM EST:

Just for fun

diagram


H. G. Muller wrote on Wed, Feb 1, 2023 02:35 PM EST in reply to Jean-Louis Cazaux from 01:37 PM:

Bah, I was (sadly) fearing to get such an answer. I take your last sentence straight in my face, thank you. Are you especially angry today?

Not angry at all. But if you suspected this answer could come, there must be some truth in it, right? And don't get me wrong, Shako and Pemba are great games. I count them in the top 10%-tier of all chess variants, because of the good spectrum of piece values and interesting pieces. But that doesn't mean one should make infinite numbers of variations on them, using the same set of pieces over and over again, with minimal variation. Especially since there are already many other variants that use Elephant, Cannon and Vao. At some point that gets boring, and a clone of a great original is still just a clone.


Greg Strong wrote on Wed, Feb 1, 2023 02:22 PM EST in reply to Jean-Louis Cazaux from 02:11 PM:

You expressed an opinion. H.G. expressed a different opinion, complete with the logic behind it. I don't see anything objectionable here, except possibly the last sentence, and even there I think you are being too sensitive.

You often express strong opinions - sometimes quite forcefully, especially regarding the names of pieces. You also sometimes respond poorly to alternate opinions.


Jean-Louis Cazaux wrote on Wed, Feb 1, 2023 02:11 PM EST in reply to Kevin Pacey from 01:43 PM:

@Kevin: no, not yours.


Kevin Pacey wrote on Wed, Feb 1, 2023 01:43 PM EST:

Hi J-L: If you mean my answer, no, not angry at all - though I did just get up from a nap and may not yet be as tactful as I should be.


Jean-Louis Cazaux wrote on Wed, Feb 1, 2023 01:37 PM EST in reply to H. G. Muller from 09:07 AM:

Bah, I was (sadly) fearing to get such an answer. I take your last sentence straight in my face, thank you. Are you especially angry today?


Kevin Pacey wrote on Wed, Feb 1, 2023 01:26 PM EST:

With 16x8 Officer-Spiel (or 8x10 Officer Chess), I used every traditional compound piece (but only once per army) plus the other 8 pieces from FIDE chess, much as e.g. 12x10 Very Heavy Chess uses them.

While my first instinct is to reject Officer-Spiel as having too many powerful pieces (I've since added an alternative setup I prefer, with an edit to that post), maybe I'm being too fussy. That's since 14x8 Alekhine Chess uses quite similar great piece power, without even the ability for a player to castle quickly - yet that CV proved popular as far as I know, at least initially (pandering mainly to many lower rated players, perhaps - though you do what you've got to do ;)).

With 16x8 Constable-Spiel (or 8x10 Constabulary Chess), it was a similar story - I used 2 of each of 4 piece types (that are the logical compounds of A,D,F and W, in ways that make them all approximately worth a Kt; they also each only move within a radius of 2 cells). Then I combined those 8 pieces with the 8 pieces of the FIDE chess army. I liked sticking to the theme, and still don't much mind the FA type at all (much as I don't dismiss Amazons automatically as invention idea setup choices - another thing each variantist has his own personal preference about, it seems).

https://www.chessvariants.com/rules/very-heavy-chess


H. G. Muller wrote on Wed, Feb 1, 2023 09:07 AM EST in reply to Jean-Louis Cazaux from 07:53 AM:

Capablanca Chess and Carrera Chess have BN and RN singletons in the wings. For a board this wide I think it can even be nice to spread out the 'power-pieces' a bit. I don't have any clear preference myself; I just put RF and BW where I did because that was where Kevin had put the Elephants that I replaced. But I don't see why this would beg for 'improvement'. If symmetry would be the holy grail, I would sooner take two BW in the wings than move singleton BW and RF to the center. (BW on 16x8 could be significantly stronger than Rook anyway, because it will in general attack the opponent in two places, rather than one.)

One point to consider is that there are already so many variants using Elephants, Cannons, and Vaos (to not even mention Archbishops and Chancellors). I experience it as very refreshing to also see some other pieces now and then. The WA, FD, BW and RF are only rarely encountered, outside shogi variants.

And as to 'unnatural moves': if a chessplayer would consider anything unnatural, it will be the Cannon and the Vao. The presence of those divergent hoppers really upsets everything you thought to know about tactics. And I don't think the FD is unnatural at all: it is just the conjugate of a King (i.e. the 45-degree rotated version moving on the sub-grid of one shade). And King moves are very natural. The WA is indeed a different matter; you will have to learn how to manouevre with it, just like novice chess players have to learn to manouevre with a Knight. But that seems a small matter compared to mastering the use of Cannons and such.

I don't see much fun in reducing every chess variant to a version of Shako or Pemba on a differently shaped board.


Jean-Louis Cazaux wrote on Wed, Feb 1, 2023 07:53 AM EST:

If I may join and play with you on this interesting discussion, to my taste:

  • I agree with HG that it was too much strong pieces in the array (Amazon, RFN, BWN).

  • I don't like too much compound pieces like FD and WA, nice pattern but not natural (yes, this is subjective, but I feel it like this). I do prefer much FA (Elephant) and WD (War Machine) because I see a consistency in their move.

  • I don't like that singleton pieces (here Crowned R and Crowned B) are on sides where as some duo pieces are more in the center (on f,g,j,k). (Another subjective opinion).

  • I would suggest to use a pair of FA, a pair of WD. 4 spaces would remain. Have you considered to use a pair of Cannons and a pair of Vao? (Instead of the 2xFD, 1 RK, 1 BK).


H. G. Muller wrote on Wed, Feb 1, 2023 07:44 AM EST in reply to Jean-Louis Cazaux from 07:31 AM:

Ah yes, sorry. That is what I meant. I now corrected that.

Of course one can argue that the WD is similar to a Rook in the same way the FA is similar to the Bishop, but in the WD case there is a quite large value difference. And the WD is a very interesting piece in itself because of the combination of low value and mating potential.


Jean-Louis Cazaux wrote on Wed, Feb 1, 2023 07:31 AM EST in reply to H. G. Muller from 03:33 AM:

"And you already have the WD, which is also color bound"

You probably meant the FD, not the WD.


Kevin Pacey wrote on Wed, Feb 1, 2023 06:08 AM EST:

Thanks for the effort, H.G.! I'm glad Fast Castling is now supported by the I.D. (though I as a dinosaur personally have a ways to go before ever learning how to use that, especially authoring/inventing something with it).

Your modification to Constable-Spiel is interesting, and may deserve a name of its own (would we be co-inventors, if it takes root?! edit: possible name: 'Accelerated Constable-Spiel'), even if I still prefer to keep the original around under the Constable-Spiel name.

I have 22 CV invention ideas (that I at the least haven't totally rejected yet), on scrap paper and scattered in comments on this CVP site since 2019 - a start would be for me to make settings files files for them at my leisure, before thinking about the long daunting process of submitting the ideas (Fergus once capped the number of submissions at a time by a member at 9 maximum; I have 9 published presets that also might use rules pages some day). With settings files done, people could locate the ideas a bit more easily, and also play them if they wish.


H. G. Muller wrote on Wed, Feb 1, 2023 03:33 AM EST:

For my taste the pieces in Officer Spiel are way too strong, while those in Constable Spiel (although I like that more) are a bit on the weak side. If you would replace the Elephants by a Crowned Rook and a Crowned Bishop you would have an interpolation of the two that has pretty much an ideal piece mix; it would add one rook-class piece, and one halfway Rook and Queen, next to three pairs of light pieces (of which the War Machine has mating power).

I suggest to replace the Elephant, because it seems the 'most redundant piece': its footprint is a subset of that of the Bishop, and although it can jump, you already have the WA that has that move. And you already have the WD, which is also color bound.

files=16 ranks=8 whitePrefix=w blackPrefix=b graphicsType=png graphicsDir=/graphics.dir/alfaeriePNG/ squareSize=50 lightShade=#cccc11 darkShade=#339933 rimColor=#111199 coordColor=#cccc11 firstRank=1 useMarkers=1 borders=0 newClick=1 pawn::::a2-p2 knight:N:::b1,o1 kirin::FD:warmachineferz:c1,n1 phoenix:X:WA:elephantwazir:f1,k1 war machine::WD:warmachinewazir:g1,j1 bishop::::d1,m1 rook::::a1,p1 crowned bishop:H:BW:promotedbishop:e1 crowned rook:D:RF:promotedrook:l1 queen::::h1 king::KispO8::i1

P.S. The Diagram now also supports 'fast castling'. (Flush browser cache!) The XBetza notation ispOn. It seemed fitting to use the p modifier to distinguish it from normal castling, as it is a castling that can hop over other pieces. For now the n is ignored; perhaps this can be interpreted as the maximum range over which the King is allowed to jump.


Kevin Pacey wrote on Tue, Jan 31, 2023 02:29 PM EST:

Below is a diagram for a (16x8) CV invention idea of mine, which might be called Officer-Spiel, that I can study at my leisure (Fast Castling rules like in Wide Chess, and FIDE pawn rules). It was inspired by my much earlier (8x10) CV invention idea Officer Chess (see 2019-02-16 post[s] in this thread), as well as by Michael Wortley Nolan's (14x8) Alekhine Chess (I thought, if that 8-rank CV with all its piece power, and no quick way to castle, has some popularity, maybe Officer-Spiel shouldn't be ruled out):

diagram

https://www.chessvariants.com/link/zAlekhineChess

edit: Alternative setup for Officer-Spiel (currently prefer):

diagram

Kevin Pacey wrote on Tue, Jan 31, 2023 12:39 PM EST:

Here's a diagram for a (16x8) CV invention idea of mine, which might be called Constable-Spiel, that I can study at my leisure (Fast Castling rules as in Wide Chess, and FIDE pawn rules) - it was inspired by my earlier (8x10) CV invention idea Constablulary Chess (see 2020-12-16 post[s] in this thread):

diagram

https://www.chessvariants.com/rules/wide-chess


Can you look at this[Subject Thread] [Add Response]
🕸Fergus Duniho wrote on Tue, Jan 24, 2023 08:49 PM EST in reply to wdtr2 from 06:14 PM:

Okay, that's fixed now.


wdtr2 wrote on Tue, Jan 24, 2023 07:06 PM EST in reply to wdtr2 from 06:14 PM:

The game shogi seems to be broken also. Error on turn 0.


wdtr2 wrote on Tue, Jan 24, 2023 06:14 PM EST:

It's Tuesday 1/24/2023 18:07 EDT. About 1.5 hours ago I was playing pocket shogi copper, and I made my move. My opponent made his move, and now when I go into the gameroom wdtr2-cvgameroom-2023-20-548 the game blow up. It seems to be dumping the piece array. Worse than that if I click on the game not the game room the object blows up also. It seems almost like the instruction file (program) was wiped/modified/or became corrupt. It was working about 2 hours ago. Note: I did make a modification to this game about 2 or 3 days ago, so if you had to do a restore from a few days back this would explain the unusual behavior. Thanks, Jim aka wdtr2.


Diagram testing thread[Subject Thread] [Add Response]
Kevin Pacey wrote on Thu, Jan 19, 2023 01:08 PM EST:

I hadn't looked at Betza notation much so far, but didn't realize he used K=FW; I thought he'd might have cared if a piece were royal (in which case if he didn't want to use FW for Man, he might have picked another letter[s] than K - the Alfairie: Many set in the Diagram Designer, for example, uses {GU} for guard when one is putting it in its FEN notation, though that's 4 characters[!]).


Bn Em wrote on Thu, Jan 19, 2023 11:28 AM EST:

The KAD goes back at least as far as the Pasha of Paulovits' game, and also appears as a Mastodon in Mats Winter's games and as Joe Joyce's Jumping General (How's that for alliteration?(!) )


Kevin Pacey wrote on Thu, Jan 19, 2023 11:11 AM EST in reply to H. G. Muller from 05:57 AM:

I guess a FADW could be seen as a more appropriate analogue to an almost clearly weaker version of a Q, in the spirit of calling a FA an almost clearly weaker version of a B (at least in many endgames).

I wonder if a FADW would make for an interesting piece in some CV invention(s), whether or not the piece has been used by someone already. edit: Joe Joyce has used it, I recall now:

diagram

H. G. Muller wrote on Thu, Jan 19, 2023 05:57 AM EST in reply to Kevin Pacey from Wed Jan 18 05:49 PM:

Considering the WA a weak version of the Q is a stretch of the imagination. The value difference alone makes it a completely different piece, in the way you have to use it. On 8x8 the opening value of the FA is hardly different from that of a Bishop. On larger board the Bishop gains value, but the FA stays similar in value to a Knight. As the WA would. Each of those is, after all, an 8-target leaper.


Kevin Pacey wrote on Wed, Jan 18, 2023 05:49 PM EST in reply to Jean-Louis Cazaux from 01:16 PM:

The FA is one of my favourite fairy pieces, even though it seems usually much weaker than a B in an endgame with not many pawns (even then, it might somehow usefully leap to the other side of its K if adjacent to it). It's too bad there is not a Piececlopedia entry for it, but maybe understandable since at the least the origins (or favoured name(s)) of the piece are unknown or unclear (is Courier-Spiel the first instance of it being used? if so, we don't know who invented that CV).

The WA does come from Japanese origins, it seems, though maybe one could try to argue that it is almost just a clearly weaker version of a Q and doesn't add much to a CV where Qs are present in the setup (analogous to the way FA and B are sometimes compared).


Jean-Louis Cazaux wrote on Wed, Jan 18, 2023 01:16 PM EST in reply to Kevin Pacey from Tue Jan 17 04:13 PM:

For my part, I like the FA. I am sensitive to the consistency of a piece. The FA is a pure diagonal piece. It is different enough from the Bishop, especially in the center of the board where it may leap to threaten enemy pieces. A nice pattern is not necessarily a nice piece to play with, this is why I prefer it to WA or Omega's WAD. Of course this matter is highly subjective.


Kevin Pacey wrote on Tue, Jan 17, 2023 04:13 PM EST:

Hi H.G.:

These 2 latest CV ideas here are ones I thought of back some years ago, when I was keen to keep the FA pieces as part of the CVs (and some others), as they were part of the Courier-Spiel tradition. They also are handy when trying to keep all pawns guarded in the setup (a principle at least Fergus and I like to follow, even though the other 'Classics' than chess [Chinese Chess and Shogi] break it big-time, in ways extensive playtesting seems to justify however - Janus Chess is a well-tested modern CV that breaks it too).

Even much earlier you suggested the Phoenix (aka Waffle) to me, and I did use it at the least in my long-ago submitted 10x8 Waffle Chess preset, but I found keeping every pawn guarded was awkward enough that I used my Fast Castling rules even for that, though I didn't like doing so for a 10x8 CV (however enemy forces it seemed to me could make a more normal type of castling [e.g. Capablanca Chess style] problematical). Maybe I used Phoenix' in my old 12x8 Wide Chess CV too - I'd need to check. [edit: indeed I did. Note that someone took the name of Phoenix Chess before I could use it.]:

https://www.chessvariants.com/rules/wide-chess

https://www.chessvariants.com/play/waffle-chess

https://www.chessvariants.com/historic.dir/courierspiel.html


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