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

EGTB: win in 4 half-moves

# move score
1 b5 win in 3 half-moves
2 Bc6 draw
3 Ba8 loss in 4 half-moves
4 Bf1 loss in 4 half-moves
5 Bh1 loss in 4 half-moves
6 Bb7 loss in 2 half-moves
7 Bd5 loss in 2 half-moves
8 Be4 loss in 2 half-moves
9 Bf3 loss in 2 half-moves
10 Bh3 loss in 2 half-moves