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

EGTB: win in 4 half-moves

# move score
1 Kc3 win in 3 half-moves
2 Kd3 win in 3 half-moves
3 Ka4 win in 7 half-moves
4 Rb1 win in 7 half-moves
5 Rb2 win in 7 half-moves
6 Rb3 win in 7 half-moves
7 Rb6 win in 7 half-moves
8 Ka6 draw
9 Kb5 draw
10 Kc4 draw
11 Kc5 draw
12 Kd5 draw
13 Ke3 draw
14 Ke4 draw
15 Ra4 draw
16 Rb5 draw
17 Kb6 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rb8 loss in 2 half-moves
21 Rc4 loss in 2 half-moves