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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Kcd6 win in 3 half-moves
4 Kd5 win in 3 half-moves
5 Rb7 win in 3 half-moves
6 Rd7 win in 3 half-moves
7 Kd8 win in 7 half-moves
8 Ke6 win in 7 half-moves
9 Ke8 win in 7 half-moves
10 Rc6 win in 7 half-moves
11 Rc8 win in 7 half-moves
12 Kc6 win in 9 half-moves
13 Kf7 win in 9 half-moves
14 Kb4 win in 13 half-moves
15 Kc4 win in 13 half-moves
16 Kd4 win in 13 half-moves
17 Kd7 win in 13 half-moves
18 Ra7 win in 13 half-moves
19 Ked6 draw
20 Kf6 draw
21 Kf8 draw