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

EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 Rg8 win in 3 half-moves
3 Ra5 draw
4 Rc5 draw
5 Rd5 draw
6 Re5 draw
7 Rg1 draw
8 Rg2 draw
9 Rg7 draw
10 K7g7 loss in 2 half-moves
11 K7g8 loss in 2 half-moves
12 K8g7 loss in 2 half-moves
13 K8g8 loss in 2 half-moves
14 Kg6 loss in 2 half-moves
15 Kh6 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rf5 loss in 2 half-moves
18 Rg3 loss in 2 half-moves
19 Rg4 loss in 2 half-moves
20 Rh5 loss in 2 half-moves