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

EGTB: win in 10 half-moves

# move score
1 Rc4 win in 9 half-moves
2 Kc4 draw
3 Kc5 draw
4 Kd5 draw
5 Ke4 draw
6 Ke5 draw
7 Ra5 draw
8 Ra6 draw
9 Ra7 draw
10 Ra8 draw
11 Rb4 draw
12 Kc3 loss in 2 half-moves
13 Kd3 loss in 2 half-moves
14 Ke3 loss in 2 half-moves
15 Ra1 loss in 2 half-moves
16 Ra2 loss in 2 half-moves
17 Ra3 loss in 2 half-moves