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Gliński's hexagonal chess : ウィキペディア英語版
Hexagonal chess

The term hexagonal chess designates a group of chess variants played on boards composed of hexagons. The best known is Gliński's variant, played on a symmetric 91-cell hexagonal board.
Since each hexagonal cell not on a board edge has six neighbor cells, there is increased mobility for pieces compared to a standard orthogonal chessboard. (For example a rook has six natural directions for movement instead of four.) Three colours are typically used so that no two neighboring cells are the same colour, and any game piece that is colour-restricted (such as the bishop in orthodox chess) usually comes in sets of three per player in order to maintain the game's balance. Many different shapes and sizes of hexagon-based boards are used by variants. The nature of the game is also affected by the 30-degree orientation of the boardcells. (For example, when the sides of hex cells face the players, pawns typically have one straightforward move direction. If a variant's gameboard has cell vertices facing the players, pawns typically have two oblique-forward move directions.) The six sidedness of the symmetric hexagon gameboard has also resulted in a number of three-player variants.
The first applications of chess on hexagonal boards probably occurred mid-19th century, but two early examples did not include checkmate as the winning objective. More chess-like games for hex-based boards started appearing regularly at the beginning of the 20th century. Hex-celled gameboards have grown in use for strategy games generally; for example they are popularly used in modern wargaming.
==Gliński's hexagonal chess==
Gliński's hexagonal chess, invented by Władysław Gliński in 1936 and first launched in Britain in 1949, is probably the most widely played of the hexagonal chess variants. The game was popular in Eastern Europe, especially in Gliński's native Poland. At one point there were more than half a million players, and more than 130,000 board sets were sold.〔

The game is played on a regular hexagonal board with 91 hex cells having three colours (light, dark, and mid-tone), with the middle cell (or "hex") usually mid-tone. The usual set of chess pieces is increased by one bishop and one pawn. The board has 11 files, marked by letters a –l (letter j is not used), and 11 ranks (which bend 60° at file f). Ranks 1–6 each contain 11 cells, rank 7 (filled with black pawns in the initial setup) has 9 cells, rank 8 has 7, and so on. Rank 11 contains exactly one cell: f11.
The diagrams show how each piece moves. As in chess, the knight can jump over other pieces. A player's three bishops, relegated to different colours, can never meet. The queen moves as rook plus bishop. There is no castling in Gliński's hex chess.
Pawns move straight forward and capture obliquely forward to an adjacent cell (shown as crosses in the diagram); the pawn's capturing move direction is not diagonal like the bishop's move, as is the case in standard chess. All pawns can make a double step from their starting cells. If a pawn captures from its starting cell in such a way that it then occupies a starting cell of another pawn, it can still make a double move. For example, if the pawn on e4 were to capture a black piece on f5, the pawn retains the option to move to f7. The white pawn in the middle file (cell f5) cannot make a double step in the initial setup, since the target cell is occupied (a black pawn is on f7), but the double-step move could be made later when the cell is empty. ''En passant'' captures are also possible: for example, if the black pawn on c7 in the diagram moves to c5 in a single move, the white pawn on b5 can capture it: bxc6. Pawns promote on the last cell of a file; white pawns promote on the cells in the diagram marked with stars.
Stalemate is not a draw in Gliński's hex chess, but is still counted less than checkmate. In tournament games, the player who delivers stalemate earns ¾ point, and the stalemated player (the player without a legal move) receives ¼ point.
A numeric (or international) notation exists. Every other detail is exactly as in ICCF numeric notation, except there is no castling.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Hexagonal chess」の詳細全文を読む



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