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 Ra1 draw
3 Rb1 draw
4 Rc1 draw
5 Rf1 draw
6 Rg5 draw
7 Rg6 draw
8 Rg7 draw
9 Rg8 draw
10 Kg6 loss in 2 half-moves
11 Kg7 loss in 2 half-moves
12 Kg8 loss in 2 half-moves
13 Kh6 loss in 2 half-moves
14 Kh8 loss in 2 half-moves
15 Rd1 loss in 2 half-moves
16 Re1 loss in 2 half-moves
17 Rg2 loss in 2 half-moves
18 Rg3 loss in 2 half-moves
19 Rh1 loss in 2 half-moves