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

EGTB: win in 4 half-moves

# move score
1 Ka5 win in 3 half-moves
2 Ka6 draw
3 Ka7 draw
4 Kb7 draw
5 Kc6 draw
6 Kc7 draw
7 Kb5 loss in 2 half-moves
8 Kc5 loss in 2 half-moves