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

EGTB: win in 4 half-moves

# move score
1 Ra4 win in 3 half-moves
2 Ra6 win in 3 half-moves
3 Ka6 win in 5 half-moves
4 Kb4 win in 5 half-moves
5 Kb6 win in 5 half-moves
6 Kd4 win in 5 half-moves
7 Kd6 win in 5 half-moves
8 Ke4 win in 5 half-moves
9 Ke5 win in 5 half-moves
10 Ke6 win in 5 half-moves
11 Ra3 win in 5 half-moves
12 Ra7 win in 5 half-moves
13 Ra8 win in 5 half-moves
14 Kbc4 win in 7 half-moves
15 Kdc4 win in 7 half-moves
16 Kdc5 win in 7 half-moves
17 Kdc6 win in 7 half-moves
18 Ka4 win in 11 half-moves
19 Kbc5 draw
20 Kbc6 draw
21 Ra1 loss in 2 half-moves
22 Ra2 loss in 2 half-moves