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

EGTB: win in 4 half-moves

# move score
1 Bd1 win in 3 half-moves
2 Bb5 draw
3 Bc6 draw
4 Kc6 draw
5 Kc7 draw
6 Bb3 loss in 2 half-moves
7 Bc2 loss in 2 half-moves
8 Kc8 loss in 2 half-moves
9 Kd6 loss in 2 half-moves
10 Kd8 loss in 2 half-moves
11 Ke6 loss in 2 half-moves
12 Ke7 loss in 2 half-moves
13 Ke8 loss in 2 half-moves