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 Ka4 draw
3 Kb4 draw
4 Ka3 loss in 48 half-moves
5 Kc3 loss in 48 half-moves
6 Kc2 loss in 44 half-moves
7 Kb2 loss in 40 half-moves
8 Ka2 loss in 34 half-moves