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

EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Ra7 draw
3 Rb7 draw
4 Re7 draw
5 Rg5 draw
6 Rg6 draw
7 Kf2 loss in 2 half-moves
8 Kf3 loss in 2 half-moves
9 Kf4 loss in 2 half-moves
10 Kgg2 loss in 2 half-moves
11 Kgg4 loss in 2 half-moves
12 Kgh2 loss in 2 half-moves
13 Kgh4 loss in 2 half-moves
14 Khg2 loss in 2 half-moves
15 Khg4 loss in 2 half-moves
16 Khh2 loss in 2 half-moves
17 Khh4 loss in 2 half-moves
18 Rc7 loss in 2 half-moves
19 Rd7 loss in 2 half-moves
20 Rf7 loss in 2 half-moves
21 Rg8 loss in 2 half-moves
22 Rh7 loss in 2 half-moves