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

EGTB: win in 4 half-moves

# move score
1 Nb6 win in 3 half-moves
2 Ba5 draw
3 Bb8 draw
4 Bd6 draw
5 Bb6 loss in 6 half-moves
6 Bd8 loss in 2 half-moves
7 Be5 loss in 2 half-moves
8 Bf4 loss in 2 half-moves
9 Bg3 loss in 2 half-moves
10 Bh2 loss in 1 half-moves