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

EGTB: win in 4 half-moves

# move score
1 Rf8 win in 3 half-moves
2 Kf5 win in 7 half-moves
3 Kf8 win in 7 half-moves
4 Kf4 win in 9 half-moves
5 Kg5 win in 9 half-moves
6 Kh5 win in 9 half-moves
7 Rh8 win in 9 half-moves
8 Ke7 win in 11 half-moves
9 Kf7 win in 11 half-moves
10 Kh4 win in 11 half-moves
11 Kd7 draw
12 Kd8 draw
13 Kf3 draw
14 Kg3 draw
15 Kh3 draw
16 Rg5 loss in 2 half-moves
17 Rg6 loss in 2 half-moves
18 Rg7 loss in 2 half-moves