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 Rc6 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 Ra7 loss in 2 half-moves
14 Ra8 loss in 2 half-moves
15 Rb6 loss in 2 half-moves
16 Rd6 loss in 2 half-moves
17 Re6 loss in 2 half-moves
18 Rf6 loss in 2 half-moves
19 Rg6 loss in 2 half-moves
20 Rh6 loss in 2 half-moves