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

EGTB: win in 4 half-moves

# move score
1 Kc4 win in 3 half-moves
2 Kc5 win in 3 half-moves
3 Kb7 win in 5 half-moves
4 Ka7 draw
5 Kb8 draw
6 Kc3 draw
7 Kd3 draw
8 Ke3 draw
9 Ke4 draw
10 Ke5 draw
11 Ra5 draw
12 Rb5 draw
13 Rc5 draw
14 Rd6 draw
15 Re5 draw
16 Rf5 draw
17 Rd7 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Rg5 loss in 2 half-moves
20 Rh5 loss in 2 half-moves