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

EGTB: win in 2 half-moves

# move score
1 Kb4 win in 1 half-moves
2 Kc4 win in 1 half-moves
3 Kc2 loss in 38 half-moves
4 Kc3 loss in 38 half-moves
5 Ka3 loss in 36 half-moves
6 Ka2 loss in 26 half-moves
7 Kb2 loss in 26 half-moves
8 Ka4 loss in 2 half-moves