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 Ra2 win in 3 half-moves
5 Ra3 win in 5 half-moves
6 Rb1 win in 7 half-moves
7 Kb1 draw
8 Kc3 draw
9 Kc4 draw
10 Kc5 draw
11 Kd1 draw
12 Kd3 draw
13 Kd5 draw
14 Ke3 draw
15 Ke4 draw
16 Ke5 draw
17 Ra4 draw
18 Ra5 draw
19 Ra6 draw
20 Ra7 loss in 2 half-moves
21 Ra8 loss in 2 half-moves