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