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

EGTB: win in 4 half-moves

# move score
1 Bb8 win in 3 half-moves
2 Bc7 loss in 2 half-moves
3 Bd6 loss in 2 half-moves
4 Be5 loss in 2 half-moves
5 Bf4 loss in 2 half-moves
6 Bg3 loss in 2 half-moves
7 Nb7 loss in 2 half-moves
8 Nc6 loss in 2 half-moves
9 Ne6 loss in 2 half-moves
10 Nf7 loss in 2 half-moves
11 Bg1 loss in 1 half-moves