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

EGTB: win in 2 half-moves

# move score
1 Rb6 win in 1 half-moves
2 Rg5 win in 1 half-moves
3 Rb7 draw
4 Rb8 draw
5 Ka2 loss in 2 half-moves
6 Ka5 loss in 2 half-moves
7 Kaa4 loss in 2 half-moves
8 Kab3 loss in 2 half-moves
9 Kb2 loss in 2 half-moves
10 Kba4 loss in 2 half-moves
11 Kbb3 loss in 2 half-moves
12 Kc3 loss in 2 half-moves
13 Kc4 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Ra5 loss in 2 half-moves
16 Rc5 loss in 2 half-moves
17 Rd5 loss in 2 half-moves
18 Re5 loss in 2 half-moves
19 Rf5 loss in 2 half-moves
20 Rh5 loss in 2 half-moves