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 Ba2 loss in 2 half-moves
3 Ba6 loss in 2 half-moves
4 Bb3 loss in 2 half-moves
5 Bb5 loss in 2 half-moves
6 Bd3 loss in 2 half-moves
7 Be2 loss in 2 half-moves
8 Be6 loss in 2 half-moves
9 Bf1 loss in 2 half-moves
10 Bf7 loss in 2 half-moves
11 Bd5 loss in 1 half-moves
12 Bg8 loss in 1 half-moves