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

EGTB: win in 10 half-moves

# move score
1 Kb4 win in 9 half-moves
2 Kb5 win in 9 half-moves
3 b5 loss in 4 half-moves
4 Kc4 loss in 4 half-moves
5 Kc6 loss in 4 half-moves
6 Kcd5 loss in 4 half-moves
7 Kcd6 loss in 4 half-moves
8 Ke4 loss in 4 half-moves
9 Ke6 loss in 4 half-moves
10 Ked5 loss in 4 half-moves
11 Ked6 loss in 4 half-moves
12 Nb3 loss in 4 half-moves
13 Nb5 loss in 4 half-moves
14 Nc2 loss in 4 half-moves
15 Kf4 loss in 2 half-moves
16 Kf5 loss in 2 half-moves
17 Kf6 loss in 2 half-moves
18 Nc6 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