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 Kd2 win in 3 half-moves
4 Ra1 win in 3 half-moves
5 Ra2 win in 3 half-moves
6 Rh4 win in 3 half-moves
7 Kb4 win in 5 half-moves
8 Kc4 win in 5 half-moves
9 Kd3 win in 5 half-moves
10 Kd4 win in 5 half-moves
11 Ra5 win in 5 half-moves
12 Ra6 win in 5 half-moves
13 Rb3 win in 5 half-moves
14 Rb4 win in 5 half-moves
15 Rc4 win in 5 half-moves
16 Re4 win in 5 half-moves
17 Rf4 win in 5 half-moves
18 Rg4 win in 5 half-moves
19 Kb3 win in 7 half-moves
20 Ra7 draw
21 Ra8 loss in 2 half-moves
22 Rd4 loss in 2 half-moves