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

EGTB: win in 4 half-moves

# move score
1 Bb1 win in 3 half-moves
2 Bb3 win in 3 half-moves
3 Bc4 win in 3 half-moves
4 Bd5 win in 3 half-moves
5 Be6 win in 3 half-moves
6 Bf7 win in 3 half-moves
7 Bg8 win in 3 half-moves
8 K6b7 win in 3 half-moves
9 K6d7 win in 3 half-moves
10 K8b7 win in 3 half-moves
11 K8c7 win in 3 half-moves
12 K8d7 win in 3 half-moves
13 Kb5 win in 3 half-moves
14 Kb6 win in 3 half-moves
15 Kb8 win in 3 half-moves
16 Kc5 win in 3 half-moves
17 Kd5 win in 3 half-moves
18 Kd8 win in 3 half-moves
19 K6c7 loss in 4 half-moves
20 Kd6 loss in 4 half-moves