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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Kb8 win in 3 half-moves
3 Kc4 win in 3 half-moves
4 Kc8 win in 3 half-moves
5 Kd7 win in 3 half-moves
6 Kd8 win in 3 half-moves
7 K7b6 draw
8 K7d6 draw
9 Ra6 draw
10 Rg6 draw
11 Rh6 draw
12 K5b6 loss in 2 half-moves
13 K5d6 loss in 2 half-moves
14 Kb4 loss in 2 half-moves
15 Kb5 loss in 2 half-moves
16 Kd4 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rd6 loss in 2 half-moves
20 Re6 loss in 2 half-moves
21 Rf6 loss in 2 half-moves