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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Ka4 win in 3 half-moves
3 Ka6 win in 3 half-moves
4 Kb4 win in 3 half-moves
5 Kc6 win in 3 half-moves
6 Ke6 win in 3 half-moves
7 Rc6 win in 3 half-moves
8 Kb5 win in 9 half-moves
9 Ra6 win in 9 half-moves
10 Kc5 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Kd5 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Ke5 loss in 2 half-moves
15 Ke7 loss in 2 half-moves
16 Rb1 loss in 2 half-moves
17 Rb2 loss in 2 half-moves
18 Rb3 loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rb5 loss in 2 half-moves
21 Rb7 loss in 2 half-moves