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

EGTB: win in 14 half-moves

# move score
1 b4 win in 13 half-moves
2 Kc8 win in 15 half-moves
3 Ka7 win in 17 half-moves
4 Kab6 win in 17 half-moves
5 Kcb7 win in 17 half-moves
6 Kb8 win in 19 half-moves
7 Nb7 win in 19 half-moves
8 Kc6 loss in 5 half-moves
9 Kab7 loss in 4 half-moves
10 Kcb6 loss in 3 half-moves
11 Kd6 loss in 2 half-moves
12 Kd7 loss in 2 half-moves
13 Kd8 loss in 2 half-moves
14 Nb3 loss in 2 half-moves
15 Nc4 loss in 2 half-moves
16 Nc6 loss in 2 half-moves