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 Bd4 draw
3 Be3 draw
4 Bg1 draw
5 Bc5 loss in 2 half-moves
6 Bf2 loss in 2 half-moves
7 Bb6 loss in 1 half-moves