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 Kc6 loss in 4 half-moves
3 Ka6 loss in 3 half-moves
4 Ka5 loss in 2 half-moves
5 Kc5 loss in 2 half-moves
6 Ka4 loss in 1 half-moves
7 Kc4 loss in 1 half-moves