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 Rb1 draw
3 Kg5 loss in 2 half-moves
4 Kg6 loss in 2 half-moves
5 Kg7 loss in 2 half-moves
6 Kh5 loss in 2 half-moves
7 Kh7 loss in 2 half-moves
8 Ra1 loss in 2 half-moves
9 Re1 loss in 2 half-moves
10 Rg2 loss in 2 half-moves
11 Rg3 loss in 2 half-moves
12 Rg5 loss in 2 half-moves
13 Rg6 loss in 2 half-moves
14 Rg7 loss in 2 half-moves
15 Rg8 loss in 2 half-moves
16 Rh1 loss in 2 half-moves
17 Rc1 loss in 1 half-moves
18 Rd1 loss in 1 half-moves
19 Rf1 loss in 1 half-moves