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Using Self play against the game https://www.chessvariants.com/play/pbm/play.php?game=Pocket+Shogi+Copper&settings=default
Now move the black bishop to the center of the board without a capture (when that move is legal). (3rd or 4th move)
I think This move will produce a "move" parse error IMO.
There has been no coding changes to that game for many years.
I have seen below a discussion involving stockfish and chess variants. I did not knew that there is a connection. Can someone explain me please what variants, stockfish can play!
Aurelian Florea //
https://github.com/ianfab/Fairy-Stockfish/releases/tag/fairy_sf_14
I downloaded Fairy Stockfish from assets here.
It might be quicker to ask on this channel how to use Fairy Stockfish.
Thanks, Daphne! Have you any idea about what fairy pieces it recognizes?
https://github.com/ianfab/Fairy-Stockfish/blob/master/src/variants.ini
It might be good to take a look at this. Variants created by individuals are implemented by this definition.
And I use Fairy Stockfish via WinBoard (XBoard), I'll give you the file if you need it.
So it seems stockfish cannot do bent riders!
H. G. Muller wrote on Thu, Nov 3, 2022 11:26 AM UTC in reply to Aurelian Florea from 11:04 AM:This is what I expected. Stockfish uses bitboards, and the standard algortithms for bitboards are very much specialized for sliding along diagonals and orthogonals. Fast algorithms for check detection also often assume that moves are reversible which is also not true for bent riders.
Thanks, HG!
I don't know what PGP has to do with Game Courier, but the problem is now fixed. Perhaps you meant PHP.
yes, PHP. lol. oops. Thank you.
Why Horde chess exist on Lichess and aren't on Chessvariants? I tried to write Horde's rules but I met a page's number limit) Please write. Lichess is free chess site with billions of games and millions of players worldwide♡
H. G. Muller wrote on Tue, Nov 15, 2022 08:13 PM UTC in reply to Diceroller is Fire from 05:48 PM:Why Horde chess exist on Lichess and aren't on Chessvariants?
Well, it is nearly the same as Dunsany's Chess. Perhaps it could be added as a note to that page, and the page also put in the alphabetical index under Horde?
As to why variants that are on LiChess might not have an article here, you should pose that question primarily on the LiChess forums. If no one from LiChess creates a page for it, then it is unlikely to be here. Most people here do not visit LiChess, and even when they do, not many people would create articles about someone else's chess variant.
Ben Reiniger wrote on Tue, Nov 29, 2022 04:20 PM UTC:From the chess StackExchange site comes this variant question: https://chess.stackexchange.com/q/41052/18278
To paraphrase very briefly: compound pieces seem to often have a synergy value of 1 (e.g. Q=R+B, v(Q)=9, v(R)+v(B)=8); do amphibians see a larger synergy bonus arising from their un-binding?
Happy new year
While adding some tags here and there, I am thinking of tagging some more square boards and I need agreeable names for that tags.
Two are quite clear:
16x16 hexadecimal (from Greek)
20x20 vigesimal (from Latin)
But what about the other numbers 11, 13, 14, 15, and 18 (I leave out 17 and 19 just now, they are probably too odd)?
I'm thinking of
11x11 onzenal (from French)
13x13 treizenal (also from French)
14x14 quatorzenal (again from French)
15x15 femtenal (from the metric prefix "femto" 10^{-15}, ultimately from Danish 15)
18x18 attenal (from "atto" 10^{-18}, ultimately from Danish 18)
What do you think?
I think they will be very unfamiliar to English speakers, and board size is already kept track of without using tags. In the Related menu, you can usually find a link to Games on Same Board.
https://www.google.com/search?client=ms-google-coop&q=Duck+Chess&cx=partner-pub-2787503004438672:4328536141#cobssid=s Please solve this)
Included in the sub-wiki below is a brief description of Duck Chess (not really sufficient):
https://en.wikipedia.org/wiki/List_of_chess_variants#Variant_(fairy)_pieces
Also, from Google here's a brief blurb:
Duck Chess is a chess variant invented by Dr. Tim Paulden in 2016. The game follows most regular chess rules but adds a dynamic component to the mix: a rubber duck that both players can move. Duck Chess introduces a rubber duck that acts as a blocker.
Another such blurb, again not quite sufficient:
Each player's turn has 2 steps: After moving a piece, the duck must be moved to a different and empty square. The duck does not move like a chess piece, you can move the duck to any open square on the board. There is no check or checkmate in Duck Chess! This means you can move into check, so be careful!
Here's a link Google gives from Chess.com about the rules of Duck Chess, again brief, but apparently this time sufficient:
Greg Strong wrote on Mon, Jan 2, 2023 01:31 AM UTC in reply to Kevin Pacey from 01:05 AM:This link has complete rules but you need to scroll down a while to get to them:
H. G. Muller wrote on Mon, Jan 2, 2023 06:11 AM UTC:I thought about adding a Duck Chess article. I even uploaded a Duck image with the XBoard set. But the Interactive Diagram is not able to play it yet, so I deferred that plan to when I had an idea for how to adapt that.
BTW we have an article about a very similar variant, called Blue Chip Chess.
H. G. Muller wrote on Mon, Jan 2, 2023 06:42 AM UTC in reply to Jörg Knappen from Sun Jan 1 09:41 PM:Is there a technical limitation that tags should start with a letter? If not, why not just have tags 10x10, 10x8 etc.?
@Jörgen: I don't if there is a need or not but I like your proposed words. I didn't know that femto- and atto- prefixes are from Danish, nice to learn.
For 13, I think trezenal would be better. I've found it is used by people using base-13 computation. https://trezenal.fandom.com/wiki/Trezenal_Wiki
I'm not sure if this is a bug. I just attempted to play Kamikaze Mortal Shogi with 2 people on the same computer.
It appears to me that the screens came up properly, but
the game did not show legal moves. (FYI). This was in the 1st move and not on drop moves. (I did not test that). Shogi seems to have had something simmilar, but you fixed that. Thank you. :)
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Please provide a link to the code that isn't working.