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

EGTB: win in 4 half-moves

# move score
1 Rg3 win in 3 half-moves
2 Kf1 draw
3 Kf2 draw
4 Kgg1 draw
5 Kgh2 draw
6 Kh3 draw
7 Khg1 draw
8 Khh2 draw
9 Ra8 draw
10 Rg7 draw
11 Rh8 draw
12 Kf3 loss in 2 half-moves
13 Kg3 loss in 2 half-moves
14 Rb8 loss in 2 half-moves
15 Rc8 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg4 loss in 2 half-moves
20 Rg5 loss in 2 half-moves
21 Rg6 loss in 2 half-moves