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

EGTB: win in 2 half-moves

# move score
1 Kc3 win in 1 half-moves
2 Kc4 win in 1 half-moves
3 Kc5 win in 1 half-moves
4 Kb5 loss in 48 half-moves
5 Ka4 loss in 46 half-moves
6 Ka3 loss in 44 half-moves
7 Kb3 loss in 44 half-moves
8 Ka5 loss in 42 half-moves