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

EGTB: win in 2 half-moves

# move score
1 Rg4 win in 1 half-moves
2 Kg5 win in 5 half-moves
3 Kf5 win in 7 half-moves
4 Kh5 win in 7 half-moves
5 Kd1 loss in 2 half-moves
6 Kd2 loss in 2 half-moves
7 Ke2 loss in 2 half-moves
8 Kf1 loss in 2 half-moves
9 Kf2 loss in 2 half-moves
10 Kf6 loss in 2 half-moves
11 Kf7 loss in 2 half-moves
12 Kg7 loss in 2 half-moves
13 Kh6 loss in 2 half-moves
14 Kh7 loss in 2 half-moves
15 Rf1 loss in 2 half-moves
16 Rg2 loss in 2 half-moves
17 Rg3 loss in 2 half-moves
18 Rg5 loss in 2 half-moves
19 Rh1 loss in 2 half-moves