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

EGTB: win in 4 half-moves

# move score
1 Kf7 win in 3 half-moves
2 Kg6 win in 3 half-moves
3 Kg7 win in 3 half-moves
4 Rf8 win in 3 half-moves
5 Rg8 win in 3 half-moves
6 Rh7 win in 3 half-moves
7 Kd8 win in 5 half-moves
8 Kh5 win in 9 half-moves
9 Kh7 win in 9 half-moves
10 Kd7 win in 19 half-moves
11 Kg5 win in 19 half-moves
12 Ke7 win in 21 half-moves
13 Kf8 win in 23 half-moves