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

EGTB: win in 2 half-moves

# move score
1 Ra5 win in 1 half-moves
2 Kc2 win in 3 half-moves
3 Rb3 draw
4 Kb4 loss in 2 half-moves
5 Kb6 loss in 2 half-moves
6 Kc1 loss in 2 half-moves
7 Kc4 loss in 2 half-moves
8 Kc6 loss in 2 half-moves
9 Kd2 loss in 2 half-moves
10 Kd4 loss in 2 half-moves
11 Kd5 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Ke1 loss in 2 half-moves
14 Ke2 loss in 2 half-moves
15 Rb1 loss in 2 half-moves
16 Rb2 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rb8 loss in 2 half-moves