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

EGTB: win in 4 half-moves

# move score
1 K7f8 win in 3 half-moves
2 K8f7 win in 3 half-moves
3 K8f8 win in 3 half-moves
4 Kf6 win in 3 half-moves
5 Rf8 win in 3 half-moves
6 Ke6 win in 5 half-moves
7 K7f7 draw
8 Rg1 draw
9 Rg2 draw
10 Rg3 draw
11 Rg4 draw
12 Rg7 draw
13 Rh8 draw
14 K7d7 loss in 2 half-moves
15 K7d8 loss in 2 half-moves
16 K8d7 loss in 2 half-moves
17 K8d8 loss in 2 half-moves
18 Kd6 loss in 2 half-moves
19 Rg5 loss in 2 half-moves
20 Rg6 loss in 2 half-moves