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

EGTB: win in 2 half-moves

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