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

EGTB: win in 4 half-moves

# move score
1 Kf5 win in 3 half-moves
2 Kf6 win in 3 half-moves
3 Kh5 win in 3 half-moves
4 Kh6 win in 3 half-moves
5 Rf7 win in 3 half-moves
6 Rh7 win in 3 half-moves
7 Re7 win in 5 half-moves
8 Kc7 win in 7 half-moves
9 Kf4 win in 11 half-moves
10 Kg4 win in 11 half-moves
11 Kh4 win in 11 half-moves
12 Kc6 win in 13 half-moves
13 Ke7 win in 13 half-moves
14 Kc8 win in 15 half-moves
15 Kg6 win in 17 half-moves
16 Kd6 loss in 2 half-moves
17 Kd8 loss in 2 half-moves
18 Ke6 loss in 2 half-moves
19 Ke8 loss in 2 half-moves
20 Rg6 loss in 2 half-moves
21 Rg8 loss in 2 half-moves