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

EGTB: win in 6 half-moves

# move score
1 Kb6 win in 5 half-moves
2 Kc6 win in 5 half-moves
3 Kd6 win in 5 half-moves
4 Rb8 win in 5 half-moves
5 Kb8 win in 7 half-moves
6 Kc8 win in 7 half-moves
7 Kd8 win in 7 half-moves
8 Rb4 win in 7 half-moves
9 Rb6 win in 7 half-moves
10 Kb4 win in 9 half-moves
11 Kd7 win in 9 half-moves
12 Rb5 win in 9 half-moves
13 Ka2 draw
14 Kb2 draw
15 Kc2 draw
16 Ka3 loss in 2 half-moves
17 Ka4 loss in 2 half-moves
18 Kc3 loss in 2 half-moves
19 Kc4 loss in 2 half-moves
20 Ra7 loss in 2 half-moves