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

EGTB: win in 4 half-moves

# move score
1 Bg7 win in 3 half-moves
2 Bh6 win in 3 half-moves
3 Kd5 win in 3 half-moves
4 Be7 win in 7 half-moves
5 Kb6 win in 7 half-moves
6 Kd6 win in 7 half-moves
7 Bd6 loss in 4 half-moves
8 Kb5 loss in 4 half-moves
9 Kc6 loss in 4 half-moves
10 Kb4 loss in 2 half-moves
11 Kc4 loss in 2 half-moves
12 Kd4 loss in 2 half-moves