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

EGTB: win in 4 half-moves

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