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

EGTB: win in 18 half-moves

# move score
1 Kb8 win in 17 half-moves
2 b5 loss in 4 half-moves
3 Kc6 loss in 4 half-moves
4 Kc8 loss in 4 half-moves
5 Kcd6 loss in 4 half-moves
6 Kcd7 loss in 4 half-moves
7 Kcd8 loss in 4 half-moves
8 Ke6 loss in 4 half-moves
9 Ke8 loss in 4 half-moves
10 Ked6 loss in 4 half-moves
11 Ked7 loss in 4 half-moves
12 Ked8 loss in 4 half-moves
13 Na5 loss in 4 half-moves
14 Nc5 loss in 4 half-moves
15 Nd6 loss in 4 half-moves
16 Nd8 loss in 4 half-moves
17 Kf6 loss in 2 half-moves
18 Kf7 loss in 2 half-moves
19 Kf8 loss in 2 half-moves