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

EGTB: win in 6 half-moves

# move score
1 Rc8 win in 5 half-moves
2 K7c7 draw
3 K7c8 draw
4 K7e8 draw
5 K8c8 draw
6 K8e8 draw
7 Kc6 draw
8 Kd6 draw
9 Ra3 draw
10 Ra7 draw
11 Rb8 draw
12 K7e7 loss in 2 half-moves
13 K8c7 loss in 2 half-moves
14 K8e7 loss in 2 half-moves
15 Ke6 loss in 2 half-moves
16 Ra1 loss in 2 half-moves
17 Ra2 loss in 2 half-moves
18 Ra4 loss in 2 half-moves
19 Ra5 loss in 2 half-moves
20 Ra6 loss in 2 half-moves