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 Ka7 draw
3 Kd3 draw
4 Kd4 draw
5 Ke3 draw
6 Kf3 draw
7 Kf4 draw
8 Rf4 draw
9 Rh1 draw
10 Rh2 draw
11 Rh3 draw
12 Kb7 loss in 2 half-moves
13 Kb8 loss in 2 half-moves
14 Kd5 loss in 2 half-moves
15 Ke5 loss in 2 half-moves
16 Kf5 loss in 2 half-moves
17 Rh5 loss in 2 half-moves
18 Rh6 loss in 2 half-moves
19 Rh7 loss in 2 half-moves
20 Rh8 loss in 2 half-moves