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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kb7 win in 3 half-moves
3 Rb5 win in 3 half-moves
4 Rc5 win in 3 half-moves
5 Ra6 win in 7 half-moves
6 Ra8 win in 7 half-moves
7 Kc4 win in 13 half-moves
8 Kb8 draw
9 Kc5 draw
10 Kc8 draw
11 Kcc6 draw
12 Kcd6 draw
13 Kd4 draw
14 Kd7 draw
15 Kd8 draw
16 Kdc6 draw
17 Kdd6 draw
18 Ke6 draw
19 Ra1 draw
20 Ra7 draw
21 Ke4 loss in 2 half-moves
22 Ke5 loss in 2 half-moves
23 Ra2 loss in 2 half-moves
24 Ra3 loss in 2 half-moves
25 Ra4 loss in 2 half-moves