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Questions tagged [chess-variants]

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

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4
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0answers
58 views

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 ...
5
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2answers
210 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 ...
5
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3answers
128 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/...
3
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5answers
173 views

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 ...
2
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0answers
53 views

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 ...
1
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1answer
126 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 ...
6
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1answer
200 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 ...
5
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1answer
236 views

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 ...
3
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2answers
177 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 ...
7
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0answers
155 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 ...
8
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2answers
328 views

Openings in King of the hill

As you probably know, "King of the hill" (KOTH) is a variant of chess where one can win either like in classical chess or by putting the king in the central squares, namely d4, e4, d5 and e5, by a ...
3
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2answers
180 views

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, ...
4
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2answers
1k views

Where can I play Quantum Chess online for free?

I saw some videos featuring a chess variant called Quantum Chess on YouTube. It looked very interesting to me, so I decided to try to find it online for free, but I couldn’t. Does anyone know of such ...
5
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2answers
191 views

Studying why Gardner's Minichess Variant is solved?

I recently came across an interesting article that proves Gardner's Minichess is solved (2013) and the theoretical result is a draw. Might studying why Minichess is a theoretical draw help me better ...
3
votes
1answer
255 views

Is there a winning strategy for Losing chess?

Losing chess has been proven to be a win for white, with the opening move 1. e3 The proof consists of a number of huge game trees which show that each variation must end in a white win, but is there ...
6
votes
1answer
234 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, ...
10
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2answers
336 views

Is a “Strong King” handicap really as powerful as is claimed?

Wikipedia quotes an analysis by GM Harry Golombek (from Golombek’s Encyclopedia of Chess, Crown Publishers, 1977, p. 218. I do not have access to the source) where he lists possible handicaps, in ...
2
votes
1answer
167 views

What's the point of attack board inversion?

In tri-dimensional chess some rule sets allow for the attack board to be moved from the peg on top of the main board to the peg on the underside (as long as the attack board is unoccupied). What is ...
1
vote
1answer
64 views

Are there starting positions in dobutsu shogi that are farther from a win/loss than the standard one?

In dobutsu shogi, the usual starting position is a loss for the beginning player in (at most) 78 turns (from first move until (and including) lion capture or ascension). But are there perhaps other (...
0
votes
1answer
84 views

What is the value of most starting positions in dobutsu shogi?

In dobutsu shogi, the usual starting position is a trébuchet or full-point mutual zugzwang position, but other likely (starting) positions can have a completely different value. If we arrange the ...
23
votes
4answers
5k views

Is there a balanced chess system where players of unknown skill can have an equal chance of winning?

Is there a chess system where you can make players of differing skill levels compete against each other with an equal chance to win without using different chess variations? This system should give ...
3
votes
0answers
271 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 +---+
0
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1answer
125 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 ...
4
votes
1answer
132 views

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.)
2
votes
1answer
133 views

Why are three chess sets needed for Kriegspiel and dark chess?

Wikipedia states that three chess sets are needed for Kriegspiel and dark chess. Is that actually true? I can see how having three sets would make things a lot easier, but couldn't the referee simply ...
4
votes
3answers
141 views

Multi (N>3) dimensional chess designs

I was wondering whether anyone has ever designed chess rules for more than 3 dimensions. At that point you wouldn't be able to visualize the play using one board. And you'd instead need to to use 8 3-...
-1
votes
2answers
274 views

Is it possible to give two more checks here?

If the knight moves then is it possible to give check mate? I have already given one check. I was playing a game of "3 check". How can I get two more checks? Is it not possible? 3 check is a mode in ...
2
votes
3answers
176 views

Pawns VS pawnless?

I'm writing a story where because of the character's vanity says "you can have pawns but I don't need them, they are beneath me." In such a game who would have the advantage?
0
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1answer
315 views

What is the best strategy for simultaneous blindfold chess?

Recently, Timur Gareyev displayed tremendous prowness by playing many boards blindfolded. What is the best strategy to visualize each and every board? I already know the basics, like splitting the ...
4
votes
2answers
240 views

15x15 squared board [closed]

My brother and I made this 15 by 15 squares chess board that uses two sets of pieces minus a pawn and king for each color. We have already played a game and find it extremely fun and interesting, but ...
3
votes
1answer
169 views

King of Chess 960

As you know, in Chess960, the first and eighth rows are symmetric and consist of the normal pieces which have be permuted. The only constraints are that the King is between the two Rooks and the ...
3
votes
2answers
274 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 ...
5
votes
3answers
185 views

two or three initial moves = win?

you have to play a game with the following rule : white can initially play two moves, then one move each side as usual, and a draw counts as a victory for black. Which side do you choose ? (say ...
-6
votes
1answer
152 views

What will replace chess? [closed]

Chess is dying. That much should be obvious. As predicted by Capablanca and as concluded by Bobby Fischer.... These are not random cranks, these are two of the best players of all time, and here are ...
0
votes
1answer
69 views

Move my king to check [duplicate]

My rook was targeting the opponent's king but her knight was in between I moved my knight to the check place checked by same knight Can I move my king to that place
2
votes
2answers
177 views

Simul in which the GM has to make identical moves

Consider two simultaneous matches in which a GM plays against Players A and B, constrained by the rule that the GM must make identical board moves in both games. Players A and B can play as usual. ...
5
votes
2answers
2k views

How different would chess be if a stalemate was a win? [duplicate]

Historically stalemate has been handled in different ways. I wonder how different chess would be if it was a win for the stalemating player. Has enough thought been put into this so that it's ...
8
votes
3answers
369 views

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 ...
20
votes
2answers
4k views

Chess960 or Chess959?

Once in 960 times, chess960 should just be the same as regular chess. Are there any known instances of this? Or is this selection automatically excluded and they just roll the dice again? So is it ...
4
votes
1answer
453 views

Four player chess (team): is there some opening theory written somewhere?

I am an active player on four player team chess on chess.com (my Elo is currently 2095). I am planning to write something about theory of opening of this chess variant. Question is, do you know if ...
9
votes
2answers
298 views

Does the chick promotion rule in dobutsu shogi really matter?

In dobutsu shogi, the chick (Japanese pawn) promotes to a chicken (Gold general). In my experience this promotion occurs only rarely and I suspect after much blundering. Does the chick promotion rule ...
4
votes
2answers
240 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 ...
1
vote
2answers
434 views

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-...
4
votes
1answer
228 views

Sacrifice a pawn to reorder the pieces

Consider a chess variant which plays exactly (*) as chess except that the players have a special option for first move. White can, instead of moving a pawn/knight as its first move, sacrifice any of ...
3
votes
1answer
306 views

Is there a Kriegspiel android app?

I'm looking for an android app for a variant of chess which is called Kriegspiel. (https://en.wikipedia.org/wiki/Kriegspiel_(chess)) I don't expect any PvP app but I'd satisfied with PvC app. (OK; I ...
8
votes
1answer
325 views

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 ...
7
votes
2answers
211 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 ...
-1
votes
1answer
126 views

What is a good defensive repertoire against a d4 opening? [duplicate]

I've been looking for a good response to a d4 opening. All the repertoires I've studied are against e4? Any suggestions, thanks
4
votes
2answers
596 views

Losers Chess variant engine

Is there a strong Losers chess variant engine? I had a look at stockfish, but it doesn't support Losers chess, seemingly. (to be used on a Linux platform)
4
votes
4answers
653 views

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.