Questions tagged [chess-variants]

Questions about variants of normal chess including bughouse, Chess960 (Fischer Random), atomic chess, racing kings, crazyhouse, antichess, etc.

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3
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1answer
75 views

Piece values on nonstandard boards

Inspiration. For the moment, a nonstandard nxn board suffices. Very obviously, with growing n the long-range pieces become stronger with respect to short range ones. (Also, other effects come in play, ...
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0answers
65 views

What are the piece values in chess.com's four player chess?

In chess.com's four-player chess, they evaluate the bishop and rook as an equal 5 points. But the geometry of the board is far more diagonal, perhaps making the bishop actually worth more than the ...
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1answer
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Elo disadvantage due to one pawn move in Indian Chess

In Indian chess, the pawn doesn't move two squares, however in the western chess, pawn can move two squares. Now, since the pawn can't move 2 in the Indian style, the fianchetto is a natural square to ...
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1answer
114 views

Is there a sequence to force a draw in crazyhouse?

I have heard that there is something like a 9 move sequence to force a draw in crazyhouse. Is there such a sequence?
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80 views

Is it possible for the hopper/locust to jump over unmovable squares?

If a board with unmovable squares, such as Chessence, has a Cannon on a1, and an enemy piece on a3, can the Cannon jump over the unmovable square (a2) and capture the target? Normally, a "leaper&...
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Is it possible to put special pieces on a chess.com custom board?

I would really like to create custom positions with custom pieces (and maybe even variants) to play with my friends because we have always enjoyed playing custom variants. So for example a board with ...
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1answer
133 views

What is white's increased advantage in chess90 as compared to chess870? (Chess960 can be split into 2 subsets, chess90 and chess870)

Here, it is shown 90 of 960 positions involve having to move a rook on 1 side in order to castle on the other side (unless the rook is somehow captured or something). These 90 positions come from 18 ...
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0answers
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Is there a variant in which any piece can be taken 'en passant'?

The en passant rule for pawns can be thought of as an 'attack of opportunity', such as in D&D - the attacking pawn would have been able to take the moving pawn as it passed through the first space....
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2answers
350 views

White is down 3 pawns in opening, but it doesn't seem like white is really losing

Lichess suggests Re3, Nb1, h4, Bf1, and e5 as top 5 moves. Evaluation is within (-0.7, 0.5). I expected it to be the evaluation to be at most -1. What's going on? [FEN "rnbnk1r1/pp1p1p1p/2p1p1p1/...
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359 views
+50

Why don't these statistics disprove white's supposed larger (practical?) advantage in chess960?

I've read that, at least theoretically, white has a larger advantage in 9LX as compared to chess. (See appendix.) This seems to be assumed in practice to the point that in some 9LX tournaments, such ...
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Looking for the finesse variant rules by GM Walter Browne

I am looking for the rules of chess variant finesse by GM Walter Browne. Here is my research so far. Two youtube videos : https://www.youtube.com/watch?v=nysD5lS4lBI https://www.youtube.com/watch?v=...
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1answer
116 views

Is the average online account underrated in chess960?

I'm going to use lichess as an example, but I believe this applies to chessdotcom too. (I think it's better to use lichess as an example anyway because lichess and statistics for Chess960.) It looks ...
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2answers
197 views

What is the meaning of 'fighting draw' vs 'draw by theory' in re Chess960?

I remember reading in some YouTube comment that Chess960 will lead to less draws or something. There was a comment response saying that it seems about the same. Then the original commenter replied in ...
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2answers
224 views

On an 8-by-∞ board, who wins between an infinite number of pawns and a rook?

I've had this puzzle rattling around in my brain for the past few days and I want to know what you all make of it. Imagine chess played on a board with eight ranks and an infinite number of files. ...
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0answers
66 views

Unhinderable long/short castling by White/Black

Assume the goal is that a certain side castles as soon as possible, and the other side wants to completely ruin castling rights. White simply plays 1.e3 2.Nf3 3.B any 4.(5.)capture an interloper 5.(6.)...
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variant where middle 4 squares aren't used [closed]

A teacher of mine proposed a chess variant to me that he called "border chess," where the middle four squares (d4, d5, e4, and e5) cannot be used. In other words, no piece can occupy one of ...
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0answers
89 views

Variant where each pawn promotes according to its file

Somewhere I came across a description of street chess played in India (I think) with a number of non-standard rules. One of them was that when a pawn reaches the 8th rank, it must promote according to ...
10
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3answers
1k views

If the back row of white pieces is moved to be in front of the pawns, which side should I play?

I remember this starting position played many times by my grandfathers. But I am too young to recollect the results of their games. If I have to choose, which side should I play? (White moves 1st)
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1answer
366 views

How many Chess960 positions exist in which castling on one side does not require moving the rook on the other side?

Update: It's chess870 (or chess869). See answer. Context/Motivation/Goal: In regular chess, you never have to move a rook (on 1 side) to castle (on the other side). My aim is to see how much of 9LX ...
6
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2answers
105 views

Where to download fischer random games?

Where can I download the PGN files for the World Chess 960 championship from 2019, that was won by Wesley So? I can view the games on the website e.g, https://www.frchess.com/stream but I want to ...
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0answers
91 views

Name for the "folding magnetic chess set" variant?

Does anyone know the name of the chessboard variant where you fold a standard board along the line between the d-file and e-file, to get a double-sided 8x4 board? A piece on top can move past the edge ...
12
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1answer
481 views

If repetition loses, who wins KvK?

Suppose we're playing a version of chess where you lose if you repeat an earlier position (position = arrangement of pieces + who's move it is). We're down to the wire, and we've just arrived at the ...
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2answers
127 views

Is an early "normalization" of the position in Chess960 a sign of good quality game?

First let us start with two definitions. Definition #1: A position is said to be normal if there exists a sequence of legal moves from the classical starting position which lead to this position. ...
3
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1answer
95 views

Are there any tri dimensional chess rules utilising traditional starting positions?

I have a tri dimensional chess game for my phone which let's the player select different rule sets to play by. They all start with the king and queen on the attack boards which I find incredibly ...
14
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3answers
4k views

Would bishops be stronger or weaker on the same coloured squares?

Assuming one or both players makes a mistake and transposes a bishop and the adjacent knight when setting up the board, would this help or hinder them? The answers to this similar question suggest it'...
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2answers
220 views

How can I load a position without kings into an engine?

I would like to be able to do load a position into a whatever possible (advanced) engine without kings. For example, the goal of the game would be to annihilate all the possible pieces instead of ...
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236 views

What are the origins of Hand & Brain chess?

I was recently leafing through Pritchard's Encyclopedia of Chess Variants when I noticed that the variant Hand and Brain which has recently become popular, in which one player states the piece to the ...
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In Hand and Brain chess, is the stronger player generally preferred to be the hand or the brain?

Exactly what it says on the tin, as the British say: In Hand and Brain chess, is the stronger player generally preferred to be the hand or the brain? And secondarily: Is the answer to the previous ...
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3answers
325 views

How do convert/parse/extract data from a PGN into a spreadsheet/google sheet/excel file?

Sequel to this question: Live statistics chess960 from chess.com? So suppose I go to like https://api.chess.com/pub/player/gmwso/games/2020/12 or https://api.chess.com/pub/player/gmwso/games/2020/12/...
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Chess480: Why 480?

From wiki: Lewis has named this chess variation "Chess480"; it follows the rules of Chess960 with the exception of the castling rules. Although a Chess480 game can start with any of 960 ...
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1answer
130 views

Live statistics chess960 from chess.com?

Cross-posted stackoverflow, but nothing. Both lichess and chess.com have the feature to play the variant chess960 live. However, only lichess has a graph showing how your live chess960 rating has ...
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Are there Chess variants or problems using this particular piece?

The piece I am asking about is the combined jumper (0,2)(0,3)(2,2)(3,3) or the combination of Dabbaba, Threeleaper, Alfil, and Tripper. It is used under the name Hawk in the recent Chess variant ...
6
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1answer
301 views

Winning percentage (white win/draw/black win) in chess960/9LX in 2021?

How does the winning percentage (white win/draw/black win) in chess 960 (Fischer random) compare to that of regular chess? The above was asked here: Winning percentage in chess 960. I would like to ...
3
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1answer
188 views

5D Chess - Why is white king not in check in this position?

Why cannot black rook on c5 in the bottom timeline capture the king on c5 in the top timeline? Why is the king not in check?
7
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1answer
2k views

Can you solve this chess problem of a lone knight against numerous opposing pieces?

[FEN "8/1nq5/bppp4/1p1k1K1N/1rrp3b/2pp2p1/8/n7 w - - 0 1"] I found this interesting and unique chess problem online. Disclaimer: This is not necessarily a position from a game. It's just a ...
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1answer
480 views

Would move sealing make sense in chessboxing? Or do the chessboxing people explain why they don't have?

In chessboxing, I think that every switch from a chess round to a boxing round is kind of an adjournment. Yet, I notice chessboxing doesn't have move sealing. Some ways a switch is not quite an ...
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1answer
65 views

Looking for a simple GUI for variants of chess

I am currently coding an engine for a variant of chess called Monster Chess. I was wondering if there a GUI existed that would simply take pieces from a square to another (eg e4 to e5) without ...
2
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2answers
253 views

What is the solution to single-check chess?

Single-check chess is a variant where the first person to give check wins. There is a website that claims it has been solved, with white winning in four moves; however, I cannot find the moves ...
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1answer
810 views

Are there any official rules for Bughouse?

I came across this question - Formal rules for two-player bughouse without a clock - which asks if there is a formal way of breaking deadlock situations where one player on each side doesn't want to ...
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2answers
324 views

The slowest Fool's Mate in Chess960

The fastest Fool's Mate in Chess960 is obviously 1. d4 g5 2. Qxg5# with any ..Q.BRKR setup, which even beats standard chess. But which is the starting position with the slowest mate? I checked a few ...
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122 views

What site/s has/have different ratings for different time controls for Chess960?

Both lichess and chess.com and have ratings for live chess960, but this is regardless of time control. Please recommend a site that has separate ratings for different time controls for chess960. there'...
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3answers
315 views

The Chess960 analogue in shogi, xiangqi, etc [closed]

Fischer said In chess so much depends on opening theory, so the champions before the last century did not know as much as I do and other players do about opening theory. So if you just brought them ...
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2answers
227 views

Patterns in Chess960 positions

I have two questions. Where can I find more studies like this Lichess one, please? I got it from this answer elsewhere on this site. The Lichess study is talking about this position [White "...
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1answer
358 views
+100

Relation between ratings for Chess960 and standard chess

Is there any relation or any attempt at discovering a relation between Chess960 ratings and standard chess ratings? This can be for GMs, for (any)M's, for pro players, or for all players on lichess/...
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0answers
255 views

Why Chess960/9LX and not Chess959?

This question asks if Chess960 is really Chess960 and not Chess959, i.e. the dice are really not re-rolled (positive, instead of normative). The answer is yes, it really is. However, why is Chess960 ...
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1answer
161 views

Chess training to get to 2000 rating [closed]

I have been playing chess (sometimes a lot, sometimes none) for a very long time. I want to become an international master in 4 years, or have a rating of 2000. I am 15 right now and have a rating of ...
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0answers
207 views

Response in antichess to 1. e3 b5 2. Bxb5 Bb7

I've been playing a lot of blitz Giveaway Chess (aka Antichess, etc; a chess variant in which capturing is compulsory, the goal is to lose all the pieces or be stalemated, there is no castling, and ...
13
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1answer
1k views

Can you castle twice in Chess960?

Consider this Chess960 game. (Warning: moving backwards through this replayer will result in an incorrect board state. See Board playback and Chess 960 for details.) [FEN "rnkqbbnr/pppppppp/8/8/8/...
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3answers
4k views

On an infinite board, which pieces are needed to checkmate?

Most of the winnable endgames require cornering the opposing king to checkmate, often using zugzwang. However, if you have an infinite board (infinite in every direction), you won't be able to corner ...
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0answers
137 views

Why isn't chess played white 1 move, black 2 moves, white 2 moves and so on?

In turn based games like chess, the player playing the first move has an advantage the whole game. One way to "remedy" this is to let the player starting the game make one move (and have the ...

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