Chess960 position 372

The back rank is N B B R K R N Q. The king starts on e1, the rooks on d1 and f1, the bishops on b1 and c1, the queen on h1.

White has 19 legal first moves, fewer than the twenty of the standard array, because the knights reach a different number of squares from where they stand.

Castling short, the king goes from e1 to g1 and the rook stays on f1.

Castling long, the king goes from e1 to c1 and the rook stays on d1.

Two things about castling here surprise people: the kingside rook already stands on f1, so castling short moves only the king; the queenside rook already stands on d1, so castling long moves only the king.

Every rule of chess applies here unchanged apart from castling, which the rules page explains in full. To play this exact arrangement against the computer, open position 372 on Play CPU. To train tactics on positions like it, use the Chess960 puzzle trainer.