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

EGTB: win in 2 half-moves

# move score
1 Rg8 win in 1 half-moves
2 Kd7 loss in 12 half-moves
3 Ke6 loss in 12 half-moves
4 Kf7 loss in 12 half-moves
5 Rb8 loss in 12 half-moves
6 Rh8 loss in 12 half-moves
7 Kf8 loss in 8 half-moves
8 Ra6 loss in 8 half-moves
9 Re8 loss in 8 half-moves
10 Kd6 loss in 4 half-moves
11 Kd8 loss in 4 half-moves
12 Ke8 loss in 4 half-moves
13 Ra5 loss in 4 half-moves
14 Ra7 loss in 4 half-moves
15 Kf6 loss in 2 half-moves
16 Ra2 loss in 2 half-moves
17 Ra3 loss in 2 half-moves
18 Ra4 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Rd8 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Ra1 loss in 1 half-moves