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

EGTB: win in 4 half-moves

# move score
1 Kf7 win in 3 half-moves
2 Kf8 win in 3 half-moves
3 b4 win in 7 half-moves
4 Kd7 win in 7 half-moves
5 Kd8 win in 7 half-moves
6 Ke7 win in 7 half-moves
7 Ka6 loss in 4 half-moves
8 Ka7 loss in 4 half-moves
9 Kb7 loss in 4 half-moves
10 Kc5 loss in 4 half-moves
11 Kc6 loss in 4 half-moves
12 Kc7 loss in 4 half-moves
13 Nc6 loss in 4 half-moves
14 Ne6 loss in 4 half-moves
15 Ka5 loss in 3 half-moves
16 Nb3 loss in 2 half-moves
17 Nc2 loss in 2 half-moves
18 Ne2 loss in 2 half-moves
19 Nf3 loss in 2 half-moves
20 Nf5 loss in 2 half-moves