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

EGTB: win in 4 half-moves

# move score
1 Rg5 win in 3 half-moves
2 Kgg3 draw
3 Kgg5 draw
4 Khg3 draw
5 Khg5 draw
6 Khh3 draw
7 Khh5 draw
8 Re7 draw
9 Rg6 draw
10 Rg8 draw
11 Rh7 draw
12 Kf3 loss in 2 half-moves
13 Kf4 loss in 2 half-moves
14 Kf5 loss in 2 half-moves
15 Kgh3 loss in 2 half-moves
16 Kgh5 loss in 2 half-moves
17 Ra7 loss in 2 half-moves
18 Rb7 loss in 2 half-moves
19 Rc7 loss in 2 half-moves
20 Rd7 loss in 2 half-moves
21 Rf7 loss in 2 half-moves