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

EGTB: win in 4 half-moves

# move score
1 Rc1 win in 3 half-moves
2 Kc1 win in 5 half-moves
3 Kc5 win in 5 half-moves
4 Kd5 win in 7 half-moves
5 Kc6 win in 9 half-moves
6 Kc7 draw
7 Kd7 draw
8 Ke6 draw
9 Ke7 draw
10 Ra1 draw
11 Rb3 draw
12 Rb4 draw
13 Rb5 draw
14 Rb6 draw
15 Rb7 draw
16 Rb8 draw
17 Kc2 loss in 2 half-moves
18 Kd2 loss in 2 half-moves
19 Ke1 loss in 2 half-moves
20 Ke2 loss in 2 half-moves
21 Ke5 loss in 2 half-moves
22 Rb2 loss in 2 half-moves