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 Kb7 win in 3 half-moves
4 Kd5 win in 3 half-moves
5 Kd6 win in 3 half-moves
6 Kd7 win in 3 half-moves
7 Kg6 win in 3 half-moves
8 Kg7 win in 3 half-moves
9 Kg8 win in 3 half-moves
10 Rb7 win in 3 half-moves
11 Rd7 win in 3 half-moves
12 Re7 win in 3 half-moves
13 Kc5 win in 11 half-moves
14 Ke7 win in 11 half-moves
15 Ra7 win in 11 half-moves
16 Ke6 loss in 2 half-moves
17 Ke8 loss in 2 half-moves
18 Kf6 loss in 2 half-moves
19 Kf8 loss in 2 half-moves
20 Rc8 loss in 2 half-moves