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 Kf2 draw
3 Kg1 draw
4 Kh1 draw
5 Kh2 draw
6 Kh3 draw
7 Rg3 draw
8 Rh8 draw
9 Kf1 loss in 12 half-moves
10 Rd8 loss in 4 half-moves
11 Kf3 loss in 2 half-moves
12 Kg3 loss in 2 half-moves
13 Rb8 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 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
20 Ra8 loss in 1 half-moves