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