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

EGTB: win in 2 half-moves

# move score
1 Ka1 win in 1 half-moves
2 Kb1 win in 1 half-moves
3 Rg8 draw
4 K2a3 loss in 2 half-moves
5 K2b3 loss in 2 half-moves
6 K4a3 loss in 2 half-moves
7 K4b3 loss in 2 half-moves
8 Ka5 loss in 2 half-moves
9 Kb2 loss in 2 half-moves
10 Kb4 loss in 2 half-moves
11 Kb5 loss in 2 half-moves
12 Ra5 loss in 2 half-moves
13 Ra6 loss in 2 half-moves
14 Ra7 loss in 2 half-moves
15 Rb8 loss in 2 half-moves
16 Rc8 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves