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 Kc5 win in 3 half-moves
3 Ra5 win in 3 half-moves
4 Ra6 win in 3 half-moves
5 Ra8 win in 3 half-moves
6 Kc6 win in 7 half-moves
7 Kd6 win in 7 half-moves
8 Ke6 win in 7 half-moves
9 Ra7 win in 15 half-moves
10 Ka3 draw
11 Ka5 draw
12 Kb3 draw
13 Kc4 draw
14 Kc7 draw
15 Kc8 draw
16 Kd8 draw
17 Ke7 draw
18 Ke8 draw
19 Ra3 draw
20 Kc3 loss in 2 half-moves
21 Ra1 loss in 2 half-moves
22 Ra2 loss in 2 half-moves