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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kb7 win in 3 half-moves
3 Kb8 win in 3 half-moves
4 Kcd7 win in 3 half-moves
5 Kcd8 win in 3 half-moves
6 Kd6 win in 3 half-moves
7 Rb8 win in 3 half-moves
8 Rd8 win in 3 half-moves
9 Ke7 win in 7 half-moves
10 Ked7 win in 7 half-moves
11 Kf7 win in 7 half-moves
12 Kf8 win in 7 half-moves
13 Kc6 win in 11 half-moves
14 Ked8 draw
15 Ra8 draw