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

EGTB: win in 6 half-moves

# move score
1 b4 win in 5 half-moves
2 Kb6 win in 9 half-moves
3 Kb8 win in 9 half-moves
4 Kf6 win in 9 half-moves
5 Kf8 win in 9 half-moves
6 Ka6 loss in 4 half-moves
7 Ka7 loss in 4 half-moves
8 Ka8 loss in 4 half-moves
9 Kg6 loss in 4 half-moves
10 Kg7 loss in 4 half-moves
11 Kg8 loss in 4 half-moves
12 Nh7 loss in 4 half-moves
13 Kc6 loss in 2 half-moves
14 Kc7 loss in 2 half-moves
15 Kc8 loss in 2 half-moves
16 Ke6 loss in 2 half-moves
17 Ke7 loss in 2 half-moves
18 Ke8 loss in 2 half-moves
19 Ne4 loss in 2 half-moves
20 Ne6 loss in 2 half-moves
21 Nf3 loss in 2 half-moves
22 Nh3 loss in 2 half-moves