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

EGTB: win in 2 half-moves

# move score
1 b4 win in 1 half-moves
2 K6c7 loss in 2 half-moves
3 K6e7 loss in 2 half-moves
4 K8c7 loss in 2 half-moves
5 K8e7 loss in 2 half-moves
6 Kc5 loss in 2 half-moves
7 Kc6 loss in 2 half-moves
8 Kc8 loss in 2 half-moves
9 Kd5 loss in 2 half-moves
10 Ke5 loss in 2 half-moves
11 Ke6 loss in 2 half-moves
12 Ke8 loss in 2 half-moves
13 Nb6 loss in 2 half-moves
14 Nb8 loss in 2 half-moves
15 Nc5 loss in 2 half-moves
16 Ne5 loss in 2 half-moves
17 Nf6 loss in 2 half-moves
18 Nf8 loss in 2 half-moves