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 Bd3 draw
3 Bd5 draw
4 Bg8 draw
5 Ba2 loss in 6 half-moves
6 Bb5 loss in 6 half-moves
7 Bf1 loss in 4 half-moves
8 Bf7 loss in 4 half-moves
9 Ba6 loss in 2 half-moves
10 Bb3 loss in 2 half-moves
11 Be2 loss in 2 half-moves
12 Be6 loss in 2 half-moves