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

EGTB: win in 8 half-moves

# move score
1 Rc7 win in 7 half-moves
2 K7c7 draw
3 K7e7 draw
4 K8c7 draw
5 K8c8 draw
6 K8e7 draw
7 K8e8 draw
8 Ra5 draw
9 Ra8 draw
10 Rb7 draw
11 K7c8 loss in 2 half-moves
12 K7e8 loss in 2 half-moves
13 Kc6 loss in 2 half-moves
14 Kd6 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 Ra4 loss in 2 half-moves
20 Ra6 loss in 2 half-moves