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 Ke5 win in 7 half-moves
3 Kd5 win in 9 half-moves
4 Kf5 win in 9 half-moves
5 Kf8 win in 9 half-moves
6 Rh4 win in 9 half-moves
7 Kd3 draw
8 Kd4 draw
9 Ke3 draw
10 Kf3 draw
11 Kf4 draw
12 Rg8 draw
13 Rh7 draw
14 Kd7 loss in 2 half-moves
15 Kd8 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Kf7 loss in 2 half-moves
18 Rh1 loss in 2 half-moves
19 Rh2 loss in 2 half-moves
20 Rh3 loss in 2 half-moves
21 Rh5 loss in 2 half-moves
22 Rh6 loss in 2 half-moves