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

EGTB: win in 4 half-moves

# move score
1 Kg6 win in 3 half-moves
2 Kg7 win in 3 half-moves
3 Rf8 win in 3 half-moves
4 Rg8 win in 3 half-moves
5 Kf8 win in 5 half-moves
6 Kg5 win in 5 half-moves
7 Kh5 win in 5 half-moves
8 Kh7 win in 5 half-moves
9 Kd8 draw
10 Kd7 loss in 2 half-moves
11 Ke7 loss in 2 half-moves
12 Kf7 loss in 2 half-moves
13 Rh7 loss in 2 half-moves