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

EGTB: win in 2 half-moves

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