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

EGTB: win in 4 half-moves

# move score
1 Rc4 win in 3 half-moves
2 Ra5 win in 7 half-moves
3 Rb5 win in 7 half-moves
4 Kd4 draw
5 Kd5 draw
6 Ke4 draw
7 Kf4 draw
8 Rc1 draw
9 Rc2 draw
10 Rc3 draw
11 Kd6 loss in 2 half-moves
12 Ke6 loss in 2 half-moves
13 Kf5 loss in 2 half-moves
14 Kf6 loss in 2 half-moves
15 Rc6 loss in 2 half-moves
16 Rc7 loss in 2 half-moves
17 Rc8 loss in 2 half-moves
18 Rd5 loss in 2 half-moves