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

EGTB: win in 4 half-moves

# move score
1 Bb7 win in 3 half-moves
2 Bf5 win in 3 half-moves
3 Bd7 win in 5 half-moves
4 Bg4 win in 5 half-moves
5 Be6 loss in 4 half-moves
6 Ba6 loss in 2 half-moves
7 Bh3 loss in 2 half-moves