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

EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Ra3 draw
3 Rb3 draw
4 Rd3 draw
5 Rg4 draw
6 Rg5 draw
7 Rg6 draw
8 Rg8 draw
9 Ke7 loss in 2 half-moves
10 Ke8 loss in 2 half-moves
11 Kf7 loss in 2 half-moves
12 Kfg7 loss in 2 half-moves
13 Kfg8 loss in 2 half-moves
14 Kh7 loss in 2 half-moves
15 Khg7 loss in 2 half-moves
16 Khg8 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Re3 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rg1 loss in 2 half-moves
21 Rg2 loss in 2 half-moves
22 Rh3 loss in 2 half-moves