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

EGTB: win in 6 half-moves

# move score
1 b3 win in 5 half-moves
2 Kb6 win in 5 half-moves
3 Kb8 win in 5 half-moves
4 Ke7 win in 5 half-moves
5 Ka6 loss in 4 half-moves
6 Ka7 loss in 4 half-moves
7 Ka8 loss in 4 half-moves
8 Kc6 loss in 4 half-moves
9 Kc7 loss in 4 half-moves
10 Kc8 loss in 4 half-moves
11 Kd7 loss in 4 half-moves
12 Kd8 loss in 4 half-moves
13 Nb5 loss in 4 half-moves
14 Nc6 loss in 4 half-moves
15 Kf7 loss in 2 half-moves
16 Kf8 loss in 2 half-moves
17 Nb3 loss in 2 half-moves
18 Nc2 loss in 2 half-moves
19 Ne2 loss in 2 half-moves
20 Ne6 loss in 2 half-moves
21 Nf3 loss in 2 half-moves
22 Nf5 loss in 2 half-moves