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

EGTB: win in 2 half-moves

# move score
1 Rg1 win in 1 half-moves
2 Ke8 draw
3 Kf8 draw
4 Ra8 draw
5 Rb8 draw
6 Rc8 draw
7 Rg5 draw
8 Rg7 draw
9 Ke6 loss in 2 half-moves
10 Ke7 loss in 2 half-moves
11 Kf6 loss in 2 half-moves
12 Kg6 loss in 2 half-moves
13 Kg7 loss in 2 half-moves
14 Rd8 loss in 2 half-moves
15 Re8 loss in 2 half-moves
16 Rf8 loss in 2 half-moves
17 Rg2 loss in 2 half-moves
18 Rg3 loss in 2 half-moves
19 Rg4 loss in 2 half-moves
20 Rg6 loss in 2 half-moves
21 Rh8 loss in 2 half-moves