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 Kab7 win in 11 half-moves
3 Kb8 win in 11 half-moves
4 Kc8 win in 11 half-moves
5 Kd6 win in 11 half-moves
6 Kd7 win in 11 half-moves
7 Kd8 win in 11 half-moves
8 Ka7 win in 13 half-moves
9 Nc5 win in 13 half-moves
10 Kc6 win in 17 half-moves
11 Kab6 loss in 4 half-moves
12 Kcb7 loss in 4 half-moves
13 Nd8 loss in 4 half-moves
14 Ka5 loss in 3 half-moves
15 Kcb6 loss in 3 half-moves
16 Nd4 loss in 2 half-moves
17 Nf4 loss in 2 half-moves
18 Nf8 loss in 2 half-moves
19 Ng5 loss in 2 half-moves
20 Ng7 loss in 2 half-moves