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

EGTB: win in 8 half-moves

# move score
1 Kb4 win in 7 half-moves
2 Kb5 win in 7 half-moves
3 Kb6 win in 7 half-moves
4 Rb5 win in 7 half-moves
5 Kcc6 win in 9 half-moves
6 Kdc6 win in 9 half-moves
7 Kcc4 draw
8 Kcd4 draw
9 Kdc4 draw
10 Kdd4 draw
11 Ke4 draw
12 Ke5 draw
13 Ra3 draw
14 Kcd6 loss in 2 half-moves
15 Kdd6 loss in 2 half-moves
16 Ke6 loss in 2 half-moves
17 Ra1 loss in 2 half-moves
18 Ra2 loss in 2 half-moves
19 Ra4 loss in 2 half-moves
20 Ra6 loss in 2 half-moves
21 Ra7 loss in 2 half-moves
22 Ra8 loss in 2 half-moves