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

EGTB: win in 4 half-moves

# move score
1 Bb3 win in 3 half-moves
2 Bb5 win in 3 half-moves
3 Bc2 win in 3 half-moves
4 Bd1 win in 3 half-moves
5 Kb5 win in 3 half-moves
6 Kc5 win in 3 half-moves
7 Kd5 win in 3 half-moves
8 Ke6 win in 3 half-moves
9 Kf6 win in 3 half-moves
10 Kg6 win in 3 half-moves
11 Kb6 win in 5 half-moves
12 Kd6 win in 5 half-moves
13 Ke7 win in 5 half-moves
14 Ke8 win in 5 half-moves
15 Kf8 win in 5 half-moves
16 Kg7 win in 5 half-moves
17 Kg8 win in 5 half-moves
18 Kb7 win in 7 half-moves
19 Kc7 win in 7 half-moves
20 Kd7 win in 7 half-moves