Ratings & Comments
Grand Apothecary Chess-Classic. Very large Board variant obtained trough tinkering with known games.[All Comments] [Add Comment or Rating]HG, If you are here please check my previous comments on this post!
Ryugi. 10x10 variant with Kirins, Marshalls, and Dragons, the latter which can move as a Bishop or as a Nightrider.[All Comments] [Add Comment or Rating]
💡📝A. M. DeWitt wrote on Fri, Oct 8, 2021 02:27 AM UTC in reply to Greg Strong from Sat May 8 12:27 AM:I've added the implementation in the Interactive Diagram. Still need to add it in Game Courier though.
Edit: Apparently by happy accident, the Game Courier preset had this implemented already without me realizing it.
Hectochess. 10x10 variant that can be played with 2 mismatched Chess sets.[All Comments] [Add Comment or Rating]💡📝A. M. DeWitt wrote on Fri, Oct 8, 2021 05:46 PM UTC:This game was a bit neglected on my part for a while, partly because of my interest in large Shogi variants and the long process of experimentation with the Suzumu Fire Demon's move. Now that those are out of the way, I have decided to give this page a facelift. I have added an interactive diagram to this page and updated its images to keep its style in line with the rules pages for Yangsi and Ryugi, and I did some double-checking to make sure the rules were in line with those of Yangsi and Ryugi. I also fixed a few typos in the ruleset references for the Hectochess and Ryugi presets.
Now all that is left is the difficult tasks of implementing the Suzumu Fire Demon's burning move in Game Courier, implementing the Lion Dog in Game Courier (for the larger games in the Suzumu family), and figuring out how to implement Cannon Shosu Shogi in Game Courier (The hopping moves make it impossible to use the code I used for Shosu Shogi and Futashikana Shogi).
Spherical Corner Chess. Game on a truly topologically spherical board with corner‐camp arrays.[All Comments] [Add Comment or Rating] Tengu Dai Shogi. Turbo version of Dai Shogi, with some Dai Dai Shogi pieces.[All Comments] [Add Comment or Rating]I've been working on implementing this game in Ai Ai, and have realised that there is an error in the write-up here: the Knight does not promote to Gold General in Tengu Dai Shogi, it promotes to a new piece which moves as a Chess Knight or as a Gold General. The text description and diagram are visible under the 桂馬：けいま heading on the original Japanese page.
Pemba. Extension of Shako, with 60 pieces.[All Comments] [Add Comment or Rating]Dear editors I believe this page, Pemba, is ready to be published. Thank you
Dear editors I believe this page, Pemba, is ready to be published. Thank you
Russian fortress chess. An old Russian variant for four players. (Cells: 192) [All Comments] [Add Comment or Rating]Please check my 2015 paper on this game in Board Game Studies Journal 9, pp. 41-49: http://bgsj.ludus-opuscula.org/PDF_Files/41_49_Markov_web.pdf
As for "Tchigorin, Capablanca and Lenin": photos of Ulyanov's chess table on the internet show a board with 160 squares, i.e. the western variant with 3 additional rows, and no fortresses. Information on Capablanca, I suspect, is due to mixing up double chess (which Capablanca did play indeed), and four-handed chess. No idea about Tchigorin but I doubt it.
Turkish Great Chess variation V. Large variant with three new pieces. (13x13, Cells: 169) [All Comments] [Add Comment or Rating]The rules above seem to be seriously flawed due to a series of errors in the literature. Please check our paper with Stefan Härtel in Board Game Studies Journal 14, pp. 43-60: https://sciendo.com/article/10.2478/bgs-2020-0003
The Sultan's Game. Variant on 11 by 11 board from 19th century Germany. (11x11, Cells: 121) [All Comments] [Add Comment or Rating]In fact, the rook - both here and in the Emperor's game - does end up next to the king. After Tressau's (and I believe this is the correct name, not Tressan: see Oettinger’s Bibliotheca Shahiludii) rules for the Sultan's game, K moves four squares towards R which lands on the adjacent square. Check the illustrative games in Tressau's book. I have a paper in press in the Board Game Studies Journal dealing with the Emperor's game and the Sultan's game which I hope will be published in 2022; will provide a link when it is.
Bn Em wrote on Wed, Oct 20, 2021 06:06 PM UTC in reply to Georgi Markov from 04:35 PM:When saying ‘four squares’, is that counted inclusively or exclusively? In the former case, both king and rook moving ‘four’ squares each would in fact land next to each other, on the bishops and adjutant's squares on the queenside and the marshall's and knight's on the commanderside.
K to b/j, R to c/i.
Delta-Nabla Chess. Chess translated to a triangular grid as naturally as possible.[All Comments] [Add Comment or Rating]Ben Reiniger wrote on Thu, Oct 21, 2021 02:50 AM UTC:Do I understand correctly that the edge pawns cannot promote without capturing? Is that a feature or a bug?
The Sultan's Game. Variant on 11 by 11 board from 19th century Germany. (11x11, Cells: 121) [All Comments] [Add Comment or Rating]Bn Em wrote on Thu, Oct 21, 2021 12:24 PM UTC in reply to Georgi Markov from Wed Oct 20 10:20 PM:Is that Tressau's interpretation? And do we know how much info the original sourcs gives on the matter?
After all if the latter does specify, as this article does, that both pieces move four spaces each, the Kc/i–Rd/h interpretation would make sense both in terms of preserving usual castling and lining up with the frequent use of inclusive counting (see also paragraph 4 of the Comments in Cazaux' page on Grant Acedrex)
Delta-Nabla Chess. Chess translated to a triangular grid as naturally as possible.[All Comments] [Add Comment or Rating]You understand correctly. Whether it's a feature or a bug is a matter of opinion I suppose. Pawns potentially getting stuck with only capturing moves is a natural consequence of a hexagonal board with players at opposite edges. Playtesting is probably the best way to determine whether that's an interesting new strategic consideration or just a nuisance.
If it is just a nuisance, then in place of castling, Delta-Nabla's own cludgy rule should probably be to give pawns the option of moving (without capturing) in the obliquely forward rook directions whenever they're not in a position to promote by moving directly forward, or perhaps only when the directly forward option is impossible due to reaching the board edge.
. Adds rifle-capturing archers and royalty-inheriting princes.[All Comments] [Add Comment or Rating]“Rook” is a mistranslation of an Old Arabic word for “Siege Tower” Could you elaborate on this? I don't see what you mean.
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I believe this is now ready to be published.