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 Ka6 draw
3 Ka8 draw
4 Kb6 draw
5 Kb7 draw
6 Kb8 draw
7 Kc4 draw
8 Kd3 draw
9 Ke3 draw
10 Ke4 draw
11 Ra1 draw
12 Rb1 draw
13 Rc1 draw
14 Rd2 draw
15 Rd3 draw
16 Rh1 draw
17 Kc3 loss in 2 half-moves
18 Kd5 loss in 2 half-moves
19 Ke5 loss in 2 half-moves
20 Re1 loss in 2 half-moves
21 Rf1 loss in 2 half-moves
22 Rg1 loss in 2 half-moves