Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 Ka7 win in 1 half-moves
2 Kd7 win in 1 half-moves
3 b4 loss in 2 half-moves
4 Kd8 loss in 2 half-moves
5 Nb6 loss in 2 half-moves
6 Kbb7 loss in 1 half-moves
7 Kbc7 loss in 1 half-moves
8 Kcb7 loss in 1 half-moves
9 Kcc7 loss in 1 half-moves
10 Nc7 loss in 1 half-moves