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 Kf7 draw
3 Kf8 draw
4 Kg7 draw
5 Kh7 draw
6 Kh8 draw
7 Rb3 draw
8 Rf3 draw
9 Rg1 draw
10 Rg2 draw
11 Ra3 loss in 2 half-moves
12 Rc3 loss in 2 half-moves
13 Rd3 loss in 2 half-moves
14 Rg5 loss in 2 half-moves
15 Rg6 loss in 2 half-moves
16 Rg7 loss in 2 half-moves
17 Rh3 loss in 2 half-moves
18 Re3 loss in 1 half-moves