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

EGTB: win in 4 half-moves

# move score
1 Bb6 win in 3 half-moves
2 Bc7 win in 3 half-moves
3 Kb5 win in 3 half-moves
4 Kc5 win in 3 half-moves
5 Bc3 win in 7 half-moves
6 Be1 draw
7 Kb6 draw
8 Kb7 draw
9 Kc7 draw
10 Bb4 loss in 2 half-moves
11 Bd2 loss in 2 half-moves
12 Bd8 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Kd6 loss in 2 half-moves
15 Kd7 loss in 2 half-moves