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

EGTB: win in 4 half-moves

# move score
1 Kf8 win in 3 half-moves
2 Kd8 draw
3 Kg1 draw
4 Kg2 draw
5 Kg3 draw
6 Kh1 draw
7 Kh3 draw
8 Rf8 draw
9 Rg8 draw
10 Rh4 draw
11 Kd7 loss in 2 half-moves
12 Ke7 loss in 2 half-moves
13 Kf7 loss in 2 half-moves
14 Rh3 loss in 2 half-moves
15 Rh5 loss in 2 half-moves
16 Rh6 loss in 2 half-moves
17 Rh7 loss in 2 half-moves