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 Ra2 win in 3 half-moves
4 Ra3 win in 3 half-moves
5 Ka2 win in 7 half-moves
6 Kc4 win in 7 half-moves
7 Kc3 win in 9 half-moves
8 Kd3 win in 13 half-moves
9 Ke3 win in 17 half-moves
10 Kc1 draw
11 Ke4 draw
12 Ra4 draw
13 Kc5 loss in 2 half-moves
14 Kd5 loss in 2 half-moves
15 Ke5 loss in 2 half-moves
16 Ra5 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Ra7 loss in 2 half-moves
19 Ra8 loss in 2 half-moves