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

EGTB: win in 4 half-moves

# move score
1 Kc5 win in 3 half-moves
2 Ka7 draw
3 Kb7 draw
4 Kb8 draw
5 Kd3 draw
6 Kd5 draw
7 Ra4 draw
8 Rb4 draw
9 Rc1 draw
10 Rc2 draw
11 Rc3 draw
12 Rc5 draw
13 Rc6 draw
14 Rc7 draw
15 Kc3 loss in 2 half-moves
16 Ke3 loss in 2 half-moves
17 Ke4 loss in 2 half-moves
18 Ke5 loss in 2 half-moves
19 Rc8 loss in 1 half-moves