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

EGTB: win in 2 half-moves

# move score
1 Rg3 win in 1 half-moves
2 Kg7 draw
3 Kh5 draw
4 Kh7 draw
5 Ra8 draw
6 Rb8 draw
7 Rf8 draw
8 Rg4 draw
9 Rh8 draw
10 Kg5 loss in 2 half-moves
11 Kg6 loss in 2 half-moves
12 Rc8 loss in 2 half-moves
13 Rd8 loss in 2 half-moves
14 Re8 loss in 2 half-moves
15 Rg1 loss in 2 half-moves
16 Rg2 loss in 2 half-moves
17 Rg5 loss in 2 half-moves
18 Rg6 loss in 2 half-moves
19 Rg7 loss in 2 half-moves