Comments by ChessShogi

The main reason I gave the name "Decimal Chess" to this variant  because I did not find any Chess variant that went by that name. I  wanted to avoid stealing the name of another game and including any part of my name when naming the game. I wanted to give the game a name that referenced the size of the board, but I couldn't a good alternative. I will put a note on the page to avoid confusion until I decide on an alternative.

When I designed Yangsi, I did so with the principles in Fergus Duniho's On Designing Good Chess Variants in mind. I have actually playtested this game several times. The people I played the game with all thought it was fun and very playable. I remember one particularly enjoyable game I played where I had a bare King and my opponent had a king and two pawns. That game ended in a draw via stalemate.

The name has been finalized (finally!). Many thanks to H. G. Muller for suggesting the name.

Increasing the board size does give the pieces more freedom of movement, Mr. Duniho, but it also does another thing - it makes it harder to keep track of everything. You yourself have stated this in your article "On Designing Good Chess Variants" in the section "Don't make your game too small or too large."

"Small games can finish too quickly, and large games can last too long. Note that the three classics are on moderate sized boards, ranging in size from 8x8 for Chess to 9x10 for Xiang Qi. 10x10 has proven a good size for many games, though 12x12 and up might be too large. I have recently (November 2009) created a 12x12 variant called Gross Chess. To some extent, this is an experiment with a board of this size. The only pieces it adds have been tried and tested in other variants, which allows the game to be a test mainly of the increased board size. Games against Zillions of Games suggest that the game is enjoyable but the larger size makes it harder to keep track of everything. I haven't yet won a game against Zillions without taking back moves. I have played a couple games on Game Courier, drawing one game and losing the other."

As for your comments on piece density, I don't think that cramming the pieces together within a 10x10 space will create too many problems. Kevin Pacey's Sac Chess also has a piece density of 60% at the start of the game, and is one of the top 50 games on Game Courier.

Note to editors: The site name for this page is incorrect. It should be https://www.chessvariants.com/rules/futashikana-shogi instead of https://www.chessvariants.com/rules/dacimal-chess. As this page hasn't been approved yet, the change can be made without any trouble.

I would love to be a part of this event. My favorite variants that are currently on the list are (in no particular order) Sac Chess, Colossus, Opulent Chess, Gross Chess, and Hectochess. Also, on a side note, I tend to not favor games that are not much like chess, escpecially if their rules are complicated like they are in Decima or if their presets don't contain full rule enforcement.

These diagrams are a wonderful thing. They can easily describe various moves that Game Courier can't handle without using complicated code. However, I have a few suggestions that, in my opinion, would make the diagram even better.

• Tame pieces - The modifier t on a final (or only) leg of a move means that move cannot capture royal pieces in XBoard. In other words, it is the opposite of the modifier k on a final (or only) leg of a move, which means that move can only be used to capture royal pieces. This modifier should be relatively easy to implement.
• Custom definition of royal pieces - Currently, the only piece that is specified as royal by the diagram is the last piece on the diagram. Some variants may have more than one kind of royal piece (i.e. Chu Shogi), which makes this a useful extension, especially if the royal pieces must stay out of check.
• Triple Captures - This is without a doubtthe hardest extension to implement. Adding this would, in theory, require adding a lot more code to handle the second locust capture. However, this extension would be necessary for the Lion Dog, which can capture three pieces in a straight line, and other pieces that can capture three pieces at once. There might be a way to do this with the WierdChain function. However, that function hasn't been used in your diagrams other than in the Paco Shako diagram.

The rule for deciding who moves first is no longer a part of this game, but I forgot to remove it from the Rules section. It has now been removed from both this page and the corresponding Game Courier presets.

Is there any way to make the applet recognize hopping pieces like Cannons (mRcpR) and Vaos (mBcpB)?

Interestingly, the diagram doesn't grey out the squares that would result in moving into check when the royal piece is a Universal Leaper (XBetza notation: U), like the Emperor in Maka dai dai Shogi.

I have beeen assigned to the second round games, but none of them are showing up on My Games on Game Courier. I eventually found them using search filters, but when I tried to move, I got a error message saying that the file for the game could not be found on the website. This happened to me for all three games. Any help I can get would be appreciated.

I also noticed another thing about the diagram that I thought was very weird. When the diagram has at least 73 different pieces it starts combining the IDs of the first 6 pieces and replacing the actual ID of the piece with those. Specifically, it does this for the first group of 6, and then it skips two pieces. This process repeats until all 6 IDs have been used (So if the first 6 IDs are 1, 2, 3, 4, 5, and 6, the overwritten IDs would be 11, 12, 13, 14, 15, 16, 21, 22, 23, and so on all the way to 66). For example, the diagram in you page on Maka Dai Dai Shogi replaces the IDs of the Furious Fiend (+Ln), Buddhist Spirit (+DS), Teaching King (+Dv), Crown Prince (+DE), and Emperor (+K) with PP, PGB, PE, PSt, and PT, respectively. This is probably due to a bug in the source code, as I can't see any reason to think that it was intentional. However, this is only a guess. Do you have any suggestions as to what might be causing this?

After a period of experimentation and looking at the How to Program Multi-Move Variants for Game Courier documentation, I managed to create a preset for my game Suzumu Shogi that can enforce rules for piece movement, display legal moves, and correctly handle both single moves and double moves. I am quite proud of it, actually.

However, no matter how hard I try, I cannot get the preset to correctly handle all promotions. The systems I came up with could handle promotions after a single move, but when the preset used the askpromote command to determine a promotion after a double move, the code would exit with an error message where the last move made had the first move in the sequence repeated. Any advice on how I should handle this would be greatly appreciated.

The preset for the game can be found here (Note that it does not support promotions): https://www.chessvariants.com/play/pbm/play.php?game%3DSuzumu+Shogi%26settings%3Ddefault

These are some very good questions. Here are my answers:

• When I said that the moves of the Fire Demons and the range-jumping generals were unplayable, I was talking about when I was still experimenting with piece moves. This was before I had even joined the Chess Variant Pages. Back then, the range-jumping pieces could only jump a single piece, and I was still experimenting with moves for the Fire Demon. I'll be honest with you - some of them got very crazy. At one time I gave it the move whose XBetza notation was the incredibly long 

  BsRvW5KaKaaKmabKcaibQ5cafKcafafKcafafafKcafafafafKafcabKafcafKafcafafKafcafafafKafafcabafKafafcabK

  afafcafKafafcafafKafafafcabafafKafafafcabafKafafafcabKafafafcafKafafafafcabafafafKafafafafcabafafK

  afafafafcabafKafafafafcabK.

  I know. It basically defies description.
  • I prefer the promotion rule from standard Shogi because not only is it much simpler to understand, it is also easier to program in Game Courier. By using the standard prommotion rule all I have to do is keep track of where the piece started and where the piece ended. If I would have used the Chu Shogi promotion rule, it would have made programming the Game Courier preset much more difficult, to say the least.
  • The reason the Fire Demon cannot jump is because allowing it to jump wouldn't fit well with the theme of the game being based on Tenjiku Shogi. Furthermore, this would potentially make the game of Mitsugumi Shogi (Suzumu Shogi's smaller counterpart) too fast-paced, even though there is only one Fire Demon in that game. Nonetheless, I have to admit that giving it the move you suggested, at least in Suzumu Shogi, could make for an interesting twist. Though I didn't really plan on giving the Fire Demon jumping moves, it's a good idea to think about.
  • Now that I think about it, I think you're right on this one. I'd say it's slightly more valuable than a single Great General or Vice General, and I definitely think it's more valuable than a Rook General or Bishop General.  Make no mistake though - even though it is not as powerful as it is in Tenjiku Shogi, the Fire Demon is still a force to be reckoned with. As for the values of the Lion Hawk and the Queen, sure, the Queen can slide in all directions, but the Lion Hawk has a fully-fledged Lion move, plus the move of the Bishop. Because of this, I would, in many cases, find it hard to believe that the Lion Hawk is less valuable than the Queen in Suzumu Shogi. The only reason it would be less valuable in Tenjiku Shogi would be because you are using the TSA rules (Bishop + 2 square area move, rather than Bishop + Lion).

Fergus, I decided to try out your Extra Move Chess Preset, and when I did a pawn promotion with the extra move, the same error that occured when I tried to promote a Soaring Eagle after completing a double move with the mouse popped up, albeit in a different form.

BANNED INPUT: k d7-e8; k d7-e8; p a2-a1; q-dest on turn 27:

MOVE: k d7-e8 and other moves to occupied spaces are banned here.

Now I have a very important question to ask: do commands like ask and askpromote only append one move to the list of past moves, or do they append something different? If the latter is the case, then that is the source of the problem. I think the askpromote command might be changing the move immediately preceding the promotion move to a list of all moves in the sequence, including the promotion move, and appending that after the choice is selected instead of just the single promotion move. This effect isn't noticeable with single move promotions because the move before the promotion move is the very first move, and because there is nothing before the first move, the sequence would remain in a legal format after the change.

I do not see any of the tournament games assigned to me. Make sure you used chessshogi instead of ChessShogi, otherwise I will not see the game. I'll put that in my about page for future reference.