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 K7g7 draw
3 K8g7 draw
4 Rb3 draw
5 Rc3 draw
6 Rd3 draw
7 Rg1 draw
8 Rg2 draw
9 Rg6 draw
10 Rg7 draw
11 Rg8 draw
12 Rh3 draw
13 K7g8 loss in 2 half-moves
14 Kg6 loss in 2 half-moves
15 Kh6 loss in 2 half-moves
16 K8g8 loss in 1 half-moves
17 Ra3 loss in 1 half-moves
18 Re3 loss in 1 half-moves
19 Rf3 loss in 1 half-moves
20 Rg5 loss in 1 half-moves