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

EGTB: win in 4 half-moves

# move score
1 Bg3 win in 3 half-moves
2 Bb8 draw
3 Bc7 draw
4 Bd6 loss in 2 half-moves
5 Be5 loss in 2 half-moves
6 Bf4 loss in 2 half-moves
7 Bg1 loss in 2 half-moves