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

EGTB: loss in 41 half-moves

# move score
1 Kc6 loss in 40 half-moves
2 Kc5 loss in 38 half-moves
3 Ka5 loss in 28 half-moves
4 Ka6 loss in 28 half-moves
5 Kb5 loss in 28 half-moves
6 Kc7 loss in 26 half-moves
7 Ka7 loss in 20 half-moves
8 Kb7 loss in 20 half-moves