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

EGTB: win in 4 half-moves

# move score
1 K5b5 win in 3 half-moves
2 Kb4 win in 3 half-moves
3 K5b6 win in 7 half-moves
4 K5d6 win in 7 half-moves
5 Kc7 win in 7 half-moves
6 Kd7 win in 7 half-moves
7 Ke7 win in 7 half-moves
8 K6b6 win in 11 half-moves
9 K6b5 win in 13 half-moves
10 Kb7 win in 15 half-moves
11 K6d6 loss in 4 half-moves
12 Ke8 loss in 4 half-moves
13 K5d5 loss in 2 half-moves
14 K6d5 loss in 2 half-moves
15 Kc4 loss in 2 half-moves
16 Kd4 loss in 2 half-moves
17 Kf7 loss in 2 half-moves
18 Kg7 loss in 2 half-moves
19 Kg8 loss in 2 half-moves