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 Kb1 win in 7 half-moves
3 Kb2 win in 7 half-moves
4 Kc2 win in 7 half-moves
5 Rb1 win in 7 half-moves
6 Kd1 win in 9 half-moves
7 Kd2 win in 9 half-moves
8 Kd6 win in 9 half-moves
9 Ra6 win in 11 half-moves
10 Kb5 loss in 2 half-moves
11 Kb7 loss in 2 half-moves
12 Kc5 loss in 2 half-moves
13 Kc7 loss in 2 half-moves
14 Kd5 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Rb2 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rb5 loss in 2 half-moves
20 Rb7 loss in 2 half-moves