カナディアンチェッカー

The international rules on a 12×12 board, with thirty men a side.

The grand jeu de dames of French Quebec: the international game on a board of 144 squares. Boards that size were on sale in London by 1805, and the Canadian championship dropped the huff — the old forfeit of a piece that failed to capture — in 1880 (H. J. R. Murray, 1978). Little is played now, and no federation's draw rules for it could be found, so the draws here are the FMJD's, borrowed from international draughts.

別名はCanadian Draughts, Grand Jeu de Dames, Dames Canadiennes。

目的

Leave the other side with no piece that can move: jump theirs off the board until none is left, or shut in whatever remains.
No lines and nothing placed after the start: every piece is down from the first move, and the whole game is in how they step and jump.

盤

A 12×12 board.
Played on the dark squares only, seventy-two of the hundred and forty-four. Each side starts with thirty men filling its own five rows.

手順

A turn moves one piece: a man steps one square diagonally forward, onto an empty square.
A man captures by jumping an adjacent enemy piece into the empty square beyond it, forward or backward.
Capturing is forced, and so is taking the most you can: of every capture on the board, only one taking the greatest number of pieces may be played. A king counts as one piece, the same as a man; among captures taking equally many, you choose.
A piece that captures and can capture again keeps going in the same move, turning corners as it must. A man that crosses the far row partway through is not crowned: it carries on as a man, and is crowned only if the capture ends there.
The pieces a capture takes come off the board only when it is over. Until then each still stands in the way: none may be jumped a second time, and nothing may pass through one.
A man whose move ends on the far row is crowned a king. A king flies: it moves any distance along an open diagonal, either way, and captures a piece at any distance, landing on any empty square beyond it — one from which it can capture again, where there is one.
The game ends the moment a colour has no piece that can move: none left, or every one shut in.

細則

White always opens.
It is a draw once twenty-five moves each have gone by in which only kings have moved and nothing has been taken.
It is a draw when the same position comes round for the third time with the same side to move.
It is a draw when three kings, two kings and a man or a king and two men against a king is not won within sixteen more moves each of that ending arising.
It is a draw when two kings, a king and a man or a king against a king is not won within five more moves each of that ending arising.
The threat reading, hints and the chance-of-winning bar are switched off: there are no lines here, only pieces jumping.
12×12, played on the dark squares only — seventy-two of the 144. Thirty men a side fill the first five rows, and the two middle rows start empty.

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