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Double chess board and initial setup. Pawns advance up to four squares on their first move. Double chess is a chess variant invented by Julian S. Grant Hayward in 1916. [1] [2] The game is played on a 16×12 chessboard with each player in control of two complete armies placed side by side.
The following rules are applicable to games in organized tournaments and matches, sanctioned by FIDE. They mention timing (chess clocks), arbiters (or, in USCF play, directors), keeping score, and adjournment. The FIDE Laws of Chess define the rules for standard chess, rapid chess, blitz chess, and guidelines for Chess960.
Duchess: Notable for its wide variety of player counts; supports 2, 3, 4, or 6 players in a free-for-all, as well as 2v2, 2v2v2, or 3v3 team play. The board consists of one 4×5 "petal" for each player. These surround a core hexagonal board, which itself has two rings of squares around a central hexagonal "vortex" space.
White rolls a 3 and a 6, and plays 3.Bxf7+. Black rolls a 2 and a 4; since no knight or rook move is a legal response to the check, he must pass. (Only a 6, or doubles, would have allowed him to move.) White rolls a 2 and a 4, and chooses 4.Nf3. (A 3 or 5 would have enabled an immediate win with 4.Bxe8, 4.Qf3# or 4.Qh5#).
Bughouse chess (also known as exchange chess, Siamese chess (but not to be confused with Thai chess), tandem chess, transfer chess, double bughouse, doubles chess, cross chess, swap chess or simply bughouse, bugsy, or bug) is a popular chess variant played on two chessboards by four players in teams of two. [1]
In chess, a combination is a sequence of moves, often initiated by a sacrifice, which leaves the opponent few options and results in tangible gain.At most points in a chess game, each player has several reasonable options from which to choose, which makes it difficult to plan ahead except in strategic terms.
Minichess – board has less squares, e.g. 3×3, 5×5, 5×6, etc. Los Alamos chess – 6×6 variant without bishops. Grid chess – 8×8 board with a 4×4 grid, dividing the board in 16 spaces of 2×2 squares each. Works just like traditional chess, except that a piece must cross at least one grid line at each move.
Several chess strategies and openings are based on burdening the opponent with doubled pawns, a strategic weakness. There are, however, cases where accepting doubled pawns can be advantageous because doing so may open up a file for a rook , or because the doubled pawns perform a useful function, such as defending important squares.