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

EGTB: win in 4 half-moves

# move score
1 Kc5 win in 3 half-moves
2 Kc3 loss in 28 half-moves
3 Kb3 loss in 24 half-moves
4 Kd3 loss in 24 half-moves
5 Kb4 loss in 18 half-moves
6 Kb5 loss in 18 half-moves
7 Kd4 loss in 2 half-moves
8 Kd5 loss in 2 half-moves