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 Ka5 draw
3 Kb3 draw
4 Kb5 draw
5 Kc3 draw
6 Kc4 draw
7 Ka4 loss in 32 half-moves
8 Ka3 loss in 22 half-moves