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

EGTB: win in 8 half-moves

# move score
1 Rb5 win in 7 half-moves
2 Rb7 draw
3 Kd4 loss in 2 half-moves
4 Kd5 loss in 2 half-moves
5 Kd6 loss in 2 half-moves
6 Kd8 loss in 2 half-moves
7 Ke4 loss in 2 half-moves
8 Ke6 loss in 2 half-moves
9 Kf4 loss in 2 half-moves
10 Kf5 loss in 2 half-moves
11 Kf6 loss in 2 half-moves
12 Ra8 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rb2 loss in 2 half-moves
15 Rb3 loss in 2 half-moves
16 Rb4 loss in 2 half-moves
17 Rb6 loss in 2 half-moves
18 Kb7 loss in 1 half-moves
19 Kc7 loss in 1 half-moves
20 Kd7 loss in 1 half-moves