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