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 Ra3 win in 5 half-moves
3 Kc4 win in 7 half-moves
4 Kd6 win in 7 half-moves
5 Ra8 win in 7 half-moves
6 Ka2 draw
7 Ka3 draw
8 Ka4 draw
9 Kb2 draw
10 Kc2 draw
11 Kc3 draw
12 Ra1 draw
13 Rb6 draw
14 Rc6 draw
15 Rd6 draw
16 Kd5 loss in 2 half-moves
17 Kd7 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Ke7 loss in 2 half-moves
20 Kf5 loss in 2 half-moves
21 Kf6 loss in 2 half-moves
22 Kf7 loss in 2 half-moves
23 Ra2 loss in 2 half-moves
24 Ra4 loss in 2 half-moves
25 Ra5 loss in 2 half-moves
26 Ra7 loss in 2 half-moves