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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Kc4 win in 3 half-moves
4 Kc6 win in 3 half-moves
5 Rb3 win in 3 half-moves
6 Rb4 win in 3 half-moves
7 Rb6 win in 3 half-moves
8 Ka1 win in 7 half-moves
9 Ka3 win in 7 half-moves
10 Kb1 win in 7 half-moves
11 Kb2 win in 7 half-moves
12 Kb3 win in 7 half-moves
13 Kd4 win in 7 half-moves
14 Kd5 win in 7 half-moves
15 Kd6 win in 7 half-moves
16 Ra5 win in 7 half-moves
17 Rb7 win in 7 half-moves
18 Rb8 win in 7 half-moves
19 Rb1 loss in 2 half-moves
20 Rb2 loss in 2 half-moves