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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kd5 win in 3 half-moves
3 Ra2 win in 3 half-moves
4 Ra4 win in 3 half-moves
5 Ra5 win in 5 half-moves
6 Rc6 win in 5 half-moves
7 Kc7 win in 13 half-moves
8 Kd7 win in 13 half-moves
9 Kb2 draw
10 Kb3 draw
11 Kc2 draw
12 Kc4 draw
13 Kc5 draw
14 Kc6 draw
15 Kd2 draw
16 Kd3 draw
17 Kd4 draw
18 Ke5 draw
19 Ra1 draw
20 Ra3 draw
21 Rb6 draw
22 Ke6 loss in 2 half-moves
23 Ke7 loss in 2 half-moves
24 Ra7 loss in 2 half-moves
25 Ra8 loss in 2 half-moves