Questions tagged [chess-variants]

Questions about variants of normal chess including bughouse, Chess960 (Fischer Random), atomic chess, and antichess.

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3answers
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Is there a name for a chess variant where you are allowed to capture your own pieces?

I occasionally think it might be fun to play a chess variant that is exactly the same as regular chess, except that it is permitted to capture your own pieces as well as your opponent's pieces - so, ...
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Chess variants-Anyone recall the name for one that has a “superpiece” with the movements of the queen and knight?

What is the name of the chess piece in a variant game where there is a piece that moves like the queen AND a knight? Is there a name for this variant?
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What chess *scoring* alternatives exist?

Chess (often being classified as a sport) stands almost alone among sports in that its results are of a strictly ternary nature that is not quantified any further: The only possible outcomes are a win,...
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Is there any position where not promoting(illegally) would be the best move?

Is there any position, where moving a pawn to last rank but not promoting it to any piece would be the best move? By the way, I know this is an illegal move. Assume it is legal. Edit: Now we have a ...
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3answers
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What are the rules for pawn wars?

I ask about the exact rules for the chess variant known as pawn wars. The starting position contains only pawns which move exactly like in chess and the first to promote wins. [FEN "8/pppppppp/8/8/8/...
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How is endgame theory developed?

First of all, I am explicitly not asking for a list of endgame principles, nor am I asking for resources to study endgames from. My question is: How does one develop endgame theory? The main ...
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2answers
228 views

New chess variant (opinion required)

I have just came up with a new chess variant. The variant works like this. So, the player starts with a match with a computer (not-so-powerful one) If the player wins the match, he gets to use the ...
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1answer
183 views

What sort of strategies unfold on this elongated board?

I recently found this incredibly elongated chess board on the /r/gaming subreddit, with this image: There was a comment thread discussing the potential strategies of playing on this board, with some ...
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1answer
200 views

Chess database software for variants

For regular chess, I use SCID and it works well. It has database searches, position searches, player stats, and a nice compact file format (i.e. not PGN, which is inefficient and big). Is there any ...
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3answers
131 views

How to combine Basic Strategies to a winning-system

Suppose one want to have a strategy so one can win over a "normal/average" chess-player. I was thinking that there was a set of strategies which could be combined so that one could memorize it? Say ...
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5answers
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Bizarre pin rule: pinned pieces do not attack

I found this guy who likes playing chess, but not enough to bother reading the rules; he only plays using a physical board with his sister (she doesn't know the rules either). The made up rule was ...
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2answers
273 views

Is Choker worth playing?

Choker (chess + poker) was released recently as a mobile app. It is a game where players have a round of poker to bet on cards they draw. They then use these cards to play chess and win the bets. My ...
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Moving into check for a draw as black, why is it illegal? Comparison to Racing Kings

I am confused why you cannot move into a check when it can force your opponent to capture your king and expose theirs. In such a case why is there no extra move to result in a draw? In the "Racing ...
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4answers
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Does playing bughouse have any benefits on your chess game?

I've heard that it helps your tactical skills, but can a chess variant really help you in tactics more than simply playing standard chess.
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1answer
455 views

What is the best way to improve Crazyhouse or Bughouse skills?

I have been playing Chess variants for a while now, and I would like to know how to improve my skills in bughouse and crazyhouse. Does anyone have any tips or strategies that would apply to either? ...
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1answer
157 views

Crazyhouse Chess: Playing with a real board and overall popularity?

Played a decent amount of bughouse but only started with crazyhouse a month or less ago. Although on the surface very similar games, I would say they are fundamentally different because there is no ...
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Crazyhouse/Bughouse openings

Are there any known or "standard" openings in bughouse or crazyhouse chess? Obviously, as soon as pieces start coming off the board things get less predictable, so this question is less about the ...
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1answer
234 views

Play Crazyhouse OTB

I was playing crazyhouse online on Lichess and I wondered how to play OTB, namely how to change the color of a captured piece. I came up with 2 methods: -Exchange the captured piece for another of a ...
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1answer
2k views

List of Crazyhouse engines

I want to get a list of all (because they are certainly only a few existing) crazyhouse engines. I searched in lichess forum posts by googling "crazyhouse engine" and collected many names and links ...
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2answers
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Analysing Crazyhouse Games

I have recently started playing crazyhouse on chess.com. For my normal chess games, I download my chess games in PGN format. Then open them up in chessbase 13 and from within chessbase load up the UCI-...
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2answers
615 views

Antichess piece value

What is the point value of each chess piece in Antichess? I think they don't need to be negative values, because you're just going after the lower valued ones. In particular, I wonder what the value ...
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1answer
202 views

Longest possible game of Horde Chess

The longest possible normal game of chess has been calculated, but I want to know what the longest possible game of Horde Chess is. What makes this an interesting case is the crazy amount of pawn ...
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1answer
437 views

Simple chess variants for beginners

How suitable would these variants for beginning players? First to check wins Three-Check Chess First to take king wins All other rules being equal.
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How likely is it that a non-orthodox promotion is optimal?

Under promotion is an interesting aspect of chess, but there are other possibilities that aren't allowed under modern rules. One is the so-called "dummy pawn", as this question discusses: When (if ...
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0answers
295 views

Is this a sound elephant offer?

In the following dobutsu shogi position, is Gc3xc2 a bad move? ABC +---+ 1| | g 2|lce| 3|E G| 4| L | *C +---+
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1answer
247 views

Would certain checkmates be possible if the king could move into check?

Similar to a previous question of mine, let's suppose there's a piece that moves like the king, but isn't restricted from moving into check. While a normal king and two knights can't force checkmate, ...
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2answers
337 views

What is the maximum DTM with K+J vs K?

What is the maximum DTM in the endgame king + janus vs king on a 10x8-board ? The janus can move like a bishop or like a knight. Since both sides have two additional pieces, the board has 10 columns ...
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1answer
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Queen with Knight capabilities

I find it interesting that the Queen can move with the same capabilities as the Rook and the Bishop, but cannot 'jump' or move like the Knight, I understand that this would overpower the queen but ...
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1answer
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Fairy chess: KNNvK

I just wondered: can K + 2 nightriders force a mate against bare K? (A nightrider can make an unlimited number of knight moves in any direction - it cannot change direction partway through its move.)
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1answer
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Amazon vs Chancellor endgame

Many online sources (such as Wikipedia) state that the endgame of amazon (piece that moves like Queen and knight) and chancellor (piece that moves like rook and knight) is a draw. I did some ...
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1answer
310 views

Marshall vs. Queen Endgame

In a game of "Sort of Almost Chess", the variant from Mr. Betza that replaces one of the queens with a Marshall (the Rook+Knight compound, also known as the Chancellor, or the Empress in Fairy Chess ...
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0answers
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16 roses, 16x16 board; maximum double-attacked squares while all 256 squares are attacked at least once?

The rose is a piece that is best described as a "circular nightrider", able to reach up to 32 other squares from the center of a 13x13 area by making consecutive knight jumps in a rotating fashion in ...
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2answers
226 views

What is the maximum number of squares 8 queens and 8 nightriders can attack on a 16x16 board?

Including but still obstructed by occupied squares, what is the maximum number of squares on a 16x16 board that 8 queens and 8 nightriders can collectively attack at least once each? Even if attacking ...
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2answers
186 views

Fairy endgame statistics for KDDDDvKN (D=dabbaba; '2,0' leaper)?

The dabbaba is a '2,0' leaper fairy piece, only able to ever reach a quarter of the squares on the board. According to the linked Wikipedia page, a quartet of them can apparently "easily" force mate ...
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1answer
620 views

Antichess pawn promotion

The rules of antichess specified in Wikipedia state that the rules of regular chess should be followed except Capturing is compulsory. When more than one capture is available, the player may choose....
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1answer
1k views

Major Chess 960 tournaments?

Does anyone have any information about upcoming Chess 960 tournaments at the top level (i.e. GMs and IMs)? Even links to/information about past, major tournaments would be appreciated. I recently ...
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2answers
525 views

Phone apps for playing chess variants

A group of local friends and I have become fairly engrossed in playing a certain chess variant over the last few years. We play on a regular basis; we've coded a program that allows us to play online, ...
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3answers
283 views

Online resources for medieval Persian chess games or puzzles?

I am looking for any collection of chess games of al-Suli or anyone medieval scholar's composition of games. Any resources would be appreciated.
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4answers
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Which chess variant has the largest board?

The largest I could find was for Double Chess, with a 16x12 board. Is there a variant with a bigger board? It doesn't have to be a variant in which chess pieces follow their orthodox movement rules.
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139 views

How do generic game engines work?

The evaluation functions for chess usually includes chess specific knowledge. However, Zillions of Games is able to play any game based only on a description of how the pieces move and winning/losing/...
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4answers
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Are there any Chess960 positions where Black has the advantage?

I've heard it said that some Chess960 positions have a significant advantage for White, usually involving fast attacks against undefended pawns. However, since zugzwang positions do exist, it's ...
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3answers
467 views

Chess variant where king is captured

While trying to teach my 4-y-o son the rules of chess, I found it difficult to explain the rules of check, checkmate and stalemate. Having already explained the moves of each piece and how capturing ...
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1answer
363 views

What would chess openings be like without castling and/or the double pawn move?

Chess has a fairly elegant set of rules, but it has two rather ugly "rules hacks" in it: Pawns can move two squares forward, but only on their first move, and have the rather ugly rule of en passant ...
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5answers
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When can king and pawn win against another king and pawn?

Assume such a situation: Both players (Black and White) only have two pieces, that is a King and a Pawn. They have the liberty of placing them according to their wishes on the first row of their side ...
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2answers
222 views

Variant chess effect

Variant chess is a relaxing break from standard chess. But in my chess club we are usually discouraged from playing such chess. I have not seen any visible problem in my games. Can anyone tell me why ...
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0answers
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Chess 960: what is the optimal arrangement? [closed]

Chess 960 is a version of chess where the pieces are arranged behind the row of pawns. The same random arrangement (with the constraints of the king being between the rooks, and the bishops being on ...
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2answers
260 views

Rejected game variant for adding a new chess piece

Some time ago İ had a book on chess, that proposed new chess variant invented by some guy, in which a new chess piece was added. so instead the usual 8 by 8 board would get replaced by a bigger 9 by 9 ...
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2answers
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An objective measure of the difference in strength between top programs and top human players in the four most popular forms of chess?

Is there an objective measure of the superiority (or otherwise) that the strongest computer programs enjoy over the strongest human players which can be compared across the four main forms of chess, ...
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What are the best scoring openings in chess 960

I don't play chess 960, or Fischer's chess. I've seen a lecture or two about it, but I was never interested. Last week I was a bit bored so I decided to participate in a chess tournament on chess.com....
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1answer
129 views

Are 'Conveyor Belt' Chess variants studied?

A 'Conveyor Belt' Chess variant is where rows (And the pieces on them) of the chessboard move left, right, up or down based on different criteria. I've not seen or heard of a chess variant where rows ...