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 Kc8 draw
3 Kd6 draw
4 Kde8 draw
5 Ke6 draw
6 Ked7 draw
7 Kee8 draw
8 Ra1 draw
9 Ra7 draw
10 Rb8 draw
11 Kc7 loss in 2 half-moves
12 Kdd7 loss in 2 half-moves
13 Kf6 loss in 2 half-moves
14 Kf7 loss in 2 half-moves
15 Kf8 loss in 2 half-moves
16 Ra2 loss in 2 half-moves
17 Ra3 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