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

EGTB: win in 4 half-moves

# move score
1 Kc1 win in 3 half-moves
2 Kb6 win in 5 half-moves
3 Rb6 win in 5 half-moves
4 Kb5 win in 9 half-moves
5 Kc5 win in 9 half-moves
6 Kb7 draw
7 Kc7 draw
8 Kd5 draw
9 Kd6 draw
10 Kd7 draw
11 Ke1 draw
12 Ra1 draw
13 Rb3 draw
14 Rc1 draw
15 Kc2 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 Ke2 loss in 2 half-moves
18 Rb2 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
22 Rb8 loss in 2 half-moves