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

EGTB: win in 4 half-moves

# move score
1 Be1 win in 3 half-moves
2 Bd8 draw
3 Be7 draw
4 Bf6 draw
5 Bg3 draw
6 Kc1 draw
7 Ke1 draw
8 Bf2 loss in 2 half-moves
9 Bg5 loss in 2 half-moves
10 Kc2 loss in 2 half-moves
11 Kd2 loss in 2 half-moves
12 Ke2 loss in 2 half-moves