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 Bd5 win in 7 half-moves
3 Bc4 loss in 8 half-moves
4 Bb1 loss in 4 half-moves
5 Bg8 loss in 4 half-moves
6 Bb3 loss in 2 half-moves
7 Be6 loss in 2 half-moves
8 Bf7 loss in 2 half-moves