체스 — 규칙

Chess 960

The game follows the usual rules of chess. Only the starting position and castling are different.

Starting position

The pieces on the first rank are placed at random: the bishops stand on squares of opposite colours, and the king stands between the rooks. Black's pieces mirror White's. Both players get the same position, and every game has a new one. The standard starting position is left out of the draw, so 959 of the 960 positions are possible.

Castling

After castling the pieces end up where they do in standard chess: kingside puts the king on g and the rook on f; queenside puts the king on c and the rook on d.

You may castle if:

• neither the king nor that rook has moved;
• every square between the start and end squares of the king and the rook is empty (apart from those two pieces);
• the king is not in check, does not pass through an attacked square and does not land on one.

To castle, click your king and then your rook.

Source and interpretation: FIDE Laws of Chess, Chess960 guidelines. Under them all 960 positions take part in the draw; here the standard set-up is excluded, since a game with it is simply chess.