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

EGTB: win in 4 half-moves

# move score
1 Kb2 win in 3 half-moves
2 Kc2 win in 3 half-moves
3 Rb2 win in 3 half-moves
4 Ka4 win in 7 half-moves
5 Rb3 win in 7 half-moves
6 Kb5 win in 9 half-moves
7 Kd2 win in 9 half-moves
8 Ra1 win in 9 half-moves
9 Kb4 win in 15 half-moves
10 Kd1 win in 15 half-moves
11 Ka6 draw
12 Kb6 draw
13 Rb4 draw
14 Rb8 draw
15 Rb5 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rb7 loss in 2 half-moves