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 Ra5 win in 5 half-moves
3 Ra7 win in 5 half-moves
4 Rc3 win in 5 half-moves
5 Kb6 draw
6 Kb7 draw
7 Kc3 draw
8 Kc5 draw
9 Kc7 draw
10 Kd5 draw
11 Kd6 draw
12 Kd7 draw
13 Ra1 draw
14 Ra6 draw
15 Ra8 draw
16 Rb3 draw
17 Kc2 loss in 2 half-moves
18 Kc4 loss in 2 half-moves
19 Kd2 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Ke2 loss in 2 half-moves
22 Ke3 loss in 2 half-moves
23 Ke4 loss in 2 half-moves
24 Ra2 loss in 2 half-moves
25 Ra4 loss in 2 half-moves