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

EGTB: win in 22 half-moves

# move score
1 K7d7 win in 21 half-moves
2 Kd8 win in 21 half-moves
3 Kb8 loss in 6 half-moves
4 b5 loss in 4 half-moves
5 K6b7 loss in 4 half-moves
6 K6d6 loss in 4 half-moves
7 K6d7 loss in 4 half-moves
8 K7d6 loss in 4 half-moves
9 Kc5 loss in 4 half-moves
10 Kc8 loss in 4 half-moves
11 Kd5 loss in 4 half-moves
12 K7b7 loss in 3 half-moves
13 Kb5 loss in 3 half-moves