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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kc4 win in 5 half-moves
3 Ka4 draw
4 Ka5 draw
5 Ka6 draw
6 Kb6 draw
7 Kc5 draw
8 Kc6 draw