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 Ka4 draw
3 Kc4 draw
4 Kc5 draw
5 Kb6 loss in 20 half-moves
6 Ka5 loss in 10 half-moves
7 Ka6 loss in 8 half-moves
8 Kc6 loss in 2 half-moves