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 Kd5 win in 3 half-moves
3 Rd7 win in 3 half-moves
4 Kd6 win in 7 half-moves
5 Kd8 win in 7 half-moves
6 Ke6 win in 7 half-moves
7 Ke8 win in 7 half-moves
8 Rc5 win in 7 half-moves
9 Rc6 win in 7 half-moves
10 Rc8 win in 7 half-moves
11 Kc5 win in 11 half-moves
12 Kd7 win in 11 half-moves
13 Kf7 win in 11 half-moves
14 Kb4 win in 13 half-moves
15 Kd4 win in 13 half-moves
16 Kb3 win in 15 half-moves
17 Rb7 win in 15 half-moves
18 Kc3 win in 17 half-moves
19 Kf6 win in 17 half-moves
20 Kd3 win in 21 half-moves
21 Kf8 win in 21 half-moves
22 Ra7 win in 21 half-moves