Chess960 position 309

The back rank is N Q B B R K R N. The king starts on f1, the rooks on e1 and g1, the bishops on c1 and d1, the queen on b1.

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 f1 to g1 and the rook goes from g1 to f1.

Castling long, the king goes from f1 to c1 and the rook goes from e1 to d1.

The pawn on h2 starts with no defender at all.

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 309 on Play CPU. To train tactics on positions like it, use the Chess960 puzzle trainer.