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Home page of The Chess Variant Pages. Homepage of The Chess Variant Pages.[All Comments] [Add Comment or Rating]
🕸📝Fergus Duniho wrote at 08:17 PM UTC:

I modified the Dark color scheme to use a darker color for the text that works well with the chocolate background cover. This is to make reading more comfortable on brightly lit screens. However, it was too low contrast on my Likebook Mars.

So I have added a new high contrast color scheme called Darker, represented by the New Moon emoji in the color scheme selection form. This is intended mainly for eink devices for which the Dark color scheme may be too low contrast, though you may still use it on other devices if you prefer it. In general, its background colors are darker, and its text colors are lighter. For the main background and text, it uses black and white. Unlike the Light and Dark color schemes, this one is not available through your browser settings. It is available only by selecting it on the website, and you may have to refresh your cache before it starts working.


Obento GC page[Subject Thread] [Add Response]
Daniel Zacharias wrote at 07:22 PM UTC in reply to Jean-Louis Cazaux from 05:46 PM:

I don't know why the images were like that, but I've redone it to use pngs instead of the svgs directly.

I'd like to make it work with alfaerie if you can suggest what images to use for the gold and silver pieces.


Chu Shogi. Historic Japanese favorite, featuring a multi-capturing Lion. (12x12, Cells: 144) (Recognized!)[All Comments] [Add Comment or Rating]
François Houdebert wrote at 06:22 PM UTC in reply to A. M. DeWitt from Sat Apr 13 03:18 PM:

I tried to update the draft I made few weeks ago.

perhaps not everything is up and running yet


Obento GC page[Subject Thread] [Add Response]
Jean-Louis Cazaux wrote at 05:46 PM UTC:

@Daniel Z: The icons displayed on this page are of heterogeneous sizes.

Second point, would it possible to play with Alfaerie graphics? I don't like to use other graphics because it adds another difficulty which is not needed in my opinion.


Three drops chess. Members-Only During the game, you can perform three piece drops. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]

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Companion chess. (Updated!) The Queen may have a companion. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
🔔Notification at 04:02 PM UTC:

The author, Piotr Smagacz, has updated this page.


Chaturanga. The first known variant of chess. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
HaruN Y wrote at 02:47 PM UTC:

What if baring ends in stalemating?


Chu Seireigi. Variant of Chu Shogi playable with drops. (12x12, Cells: 144) [All Comments] [Add Comment or Rating]
🔔Notification at 04:41 AM UTC:

The author, A. M. DeWitt, has updated this page.


Chu Shogi. Historic Japanese favorite, featuring a multi-capturing Lion. (12x12, Cells: 144) (Recognized!)[All Comments] [Add Comment or Rating]
Lev Grigoriev wrote on Sat, Apr 13 09:16 PM UTC in reply to A. M. DeWitt from 03:18 PM:

As Gbtami realized it’s playable on Lishogi.


Home page of The Chess Variant Pages. Homepage of The Chess Variant Pages.[All Comments] [Add Comment or Rating]
🕸📝Fergus Duniho wrote on Sat, Apr 13 08:41 PM UTC:

I have made the controls for changing the color scheme more accessible. They appear on the right of the menubar in desktop mode, and they appear at the bottom of the menu on mobile devices.


Sissa Style Chess. Members-Only Sissa + short range two-steppers. (10x10, Cells: 100) [All Comments] [Add Comment or Rating]

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A catalog of 3D-printable chess variant pieces. (Updated!) A catalog of 3D-printable chess variant pieces, with drawings, photographs and printable links. (8x8, Cells: 64) [All Comments] [Add Comment or Rating]
🔔Notification on Sat, Apr 13 08:23 PM UTC:

The author, Jean-Louis Cazaux, has updated this page.


@ HaruN Y[All Comments] [Add Comment or Rating]
HaruN Y wrote on Sat, Apr 13 08:19 PM UTC:Good ★★★★

1247 by Pikazilla

files=8 ranks=8 promoZone=1 promoChoice=QMGH graphicsDir=/graphics.dir/alfaeriePNG/ squareSize=50 graphicsType=png symmetry=none royal=K firstRank=1 borders=0 rimColor=#111111 coordColor=#777777 lightShade=#444444 darkShade=#222222 man:M:K:man:a2,b2,c2,d2,e2,f2,g2,h2,,a7,b7,c7,d7,e7,f7,g7,h7 queen:Q:Q:queen:d1,,d8 guard:G:K2:guard:b1,c1,f1,g1,,b8,c8,f8,g8 halfqueen:H:K4:halfqueen:a1,h1,,a8,h8 king:K:KisO2:king:e1,,e8

Betza notation (extended). The powerful XBetza extension to Betza's funny notation.[All Comments] [Add Comment or Rating]
💡📝H. G. Muller wrote on Sat, Apr 13 07:59 PM UTC in reply to Jean-Louis Cazaux from 04:49 PM:

Well, the bracket notation is simpler. This is why I would like to switch to it.

But when chaining moves into a single path it cannot be avoided that you would have to specify the bending angle at each point where two legs connect with the aid of directional modifiers (if f is assumed to be default).

And there is the more fundamental problem that oblique paths occur as pairs of mirror images, and that this mirroring swaps the meaning of l and r. To avoid having to specify complex oblique paths twice, there must be a way to encode sideway deflections not as an absolute direction, but in a relative way. And this is what z and q do.


Jean-Louis Cazaux wrote on Sat, Apr 13 04:49 PM UTC in reply to Daniel Zacharias from 01:13 PM:

@Daniel, HG. Thank you for your kind explanations. I start to see better. I had not caught the fact that the "a" could link with a "none" modifier.

I understand the logic. I don't like it much though. It is strange that nothing more natural could have been imagined, without ambiguity, to chain simple moves. You guys have been thinking on it for a long time, so I guess it is not so easy.


Camelopard Chess. (Updated!) Game with Camelopards. (12x12, Cells: 144) [All Comments] [Add Comment or Rating]
Aurelian Florea wrote on Sat, Apr 13 04:36 PM UTC in reply to Christine Bagley-Jones from 12:47 AM:

@Christine,

Thanks For including me in this discussion!


Alfaerie SVG Piece Graphics. The Alfaerie set of piece graphics in scalable SVG format.[All Comments] [Add Comment or Rating]
Daniel Zacharias wrote on Sat, Apr 13 03:34 PM UTC in reply to Bob Greenwade from 03:24 PM:

Most of them are just conversions of older alfaerie images and small modifications


Bob Greenwade wrote on Sat, Apr 13 03:30 PM UTC in reply to Daniel Zacharias from Thu Apr 11 12:09 AM:

I don't know if this will help, but I'd recommend using something between these two as a good starting point:


Bob Greenwade wrote on Sat, Apr 13 03:24 PM UTC in reply to Daniel Zacharias from 02:09 PM:

I have 46 pieces I'd like to have considered for this set

A collection that big practically calls for its own page!


Chu Shogi. Historic Japanese favorite, featuring a multi-capturing Lion. (12x12, Cells: 144) (Recognized!)[All Comments] [Add Comment or Rating]
A. M. DeWitt wrote on Sat, Apr 13 03:18 PM UTC:Excellent ★★★★★

When I first saw this game, I didn't think much of it, since I was more focused on larger Shogi variants, especially Tenjiku Shogi. However, now I have a few games against Jocly under my belt, and wow, this game completely blew me away. It is an absolute joy to play, despite its size and complexity (which melts away after a couple games). However, it is not flawless.

The Lion-trading rules are a bit complex, and making the Lion contagious (Like Maka Dai Dai Shogi's Deva, Dark Spirit, and their promoted forms) would make the rule much simpler while also achieving the same effect. However, this isn't really much of a problem, and may in fact be the better choice.

The real problem that I have with this game is that modern "innovations" have made the game more complicated than it needs to be. The repetition rules are quite complex, so much so that most computer programs for Chu Shogi that I know don't implement them, which is a trait borrowed from Xiangqi. The King Baring rule is completely unnecessary, as it does not add anything to the game that the combined effects of the other rules do not achieve. There is no evidence that it existed in the Edo period, so I'm not sure why someone thought it would be a good idea to mention this.

However, despite these problems, Chu Shogi is still easily among the best games of its kind. If you like Chess variants, you should give it a try.

Chu Seireigi combines elements of Chu Shogi with the ruleset of modern Shogi. It also has the benefit of not needing any special rules to preserve its quality, fixing all the problems with the modern "innovations" for Chu Shogi that I mentioned above. Players are disincentivized from trading off the Lions in many cases because they would just go into the player's hands, making them even more dangerous. The repetition rule is simply that of Shogi (draw, except perpetual check loses), and the drops make King-baring extremely rare. However, this comes with the unfortunate downside of having to remove the multi-move and orthogonal step from the Lion's move, as otherwise, it would be too strong, even if only the multi-move was removed. To compensate for this, the Lion also moves as a Bishop (in effect making it a Bishop+Squirrel compound).


@ Bob Greenwade[All Comments] [Add Comment or Rating]
Bob Greenwade wrote on Sat, Apr 13 02:37 PM UTC in reply to H. G. Muller from 04:57 AM:

Brain glitch -- I've no idea why I put R and B instead of W and F. As for nHH, I just didn't think of it... I'll go fix those in just a wee bit.

Thanks for the catch!


Alfaerie SVG Piece Graphics. The Alfaerie set of piece graphics in scalable SVG format.[All Comments] [Add Comment or Rating]
Daniel Zacharias wrote on Sat, Apr 13 02:09 PM UTC:

I have 46 pieces I'd like to have considered for this set


Betza notation (extended). The powerful XBetza extension to Betza's funny notation.[All Comments] [Add Comment or Rating]
💡📝H. G. Muller wrote on Sat, Apr 13 01:33 PM UTC in reply to Daniel Zacharias from 01:13 PM:

It would probably have been clearer if I had used a hyphen or slash instead of an a. But it all started as aaK for the area move of Tenjiku Shogi, and caK for the Chu-Shogi Lion. But the hyphens seem to group the atoms in the wrong way, when you don't also use brackets around the individual moves.

In (not-yet-implemented) bracket notation the Betza Rhino would be [W(?fzK)], shorthand for [W?fzK?fzK?fzK?fzK?fzK?fzK?fzK...], a W leg followed by any number of alternating fl and fr K steps.


Daniel Zacharias wrote on Sat, Apr 13 01:13 PM UTC in reply to Jean-Louis Cazaux from 11:52 AM:

Indeed I belong to those not digesting the "a" at all.

Think of a as a separator between two legs of the move, like an "and". In aW, the a implies that there are 2 legs and the W tells you what those legs are.


💡📝H. G. Muller wrote on Sat, Apr 13 01:02 PM UTC in reply to Jean-Louis Cazaux from 11:52 AM:

You should consider the a as a chaining symbol, separating the modifiers for the legs of a multi-leg move. So in afsafzafzW you see 3 a, which means the move has 4 legs. The modifiers for these legs are none, fs, fz and fz, respectively. So the first leg is a W move in all directions (no modifier). From there it continues forward-left or forward-right (because s = l or r), i.e. a diagonal step in the second leg. Then for the third leg it again deflects 45 degrees, but in the opposit direction as in the second leg, as this is what z means. Etc. So afsafzafzW is a shorthand for aflafraflWafraflafrW, two crooked trajectories that are each other's mirror image.

Haru's notation (afz)W is shorthand for WafzWafzafzWafzafzafzW..., a set of ever longer crooked trajectories. Every additional afz adds a new leg, which deflects in the opposite fl or fr (relative) direction as the previous leg did. (Which is the hallmark of a crooked move; if they would all deflect in the same direction, which you could do with fq, you would get a circular piece.)

The second leg in every sequence should really have been specified as fs, however, to indicate it can deflect in both directions, rather than only in one that is specified relative to the previous one. The first z or q occurring in such a sequence (i.e. before it is clear what 'opposit' or 'the same' direction means for the deflection, because there was no previous deflection) is always interpreted as s. You could see this as a special rule for expanding the parentheses into paths with different lengths.


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