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

EGTB: win in 4 half-moves

# move score
1 Bc1 win in 3 half-moves
2 Bb4 draw
3 Bd6 draw
4 Be7 draw
5 Bf8 draw
6 Kb1 draw
7 Kb2 draw
8 Kc1 draw
9 Kd1 draw
10 Kd2 draw
11 Bb2 loss in 2 half-moves
12 Bc5 loss in 2 half-moves
13 Kb3 loss in 2 half-moves
14 Kc3 loss in 2 half-moves
15 Kd3 loss in 2 half-moves