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

EGTB: win in 2 half-moves

# move score
1 Ka6 win in 1 half-moves
2 Kc6 win in 1 half-moves
3 Kb5 loss in 32 half-moves
4 Kb7 loss in 30 half-moves
5 Ka5 loss in 16 half-moves
6 Ka7 loss in 16 half-moves
7 Kc5 loss in 2 half-moves
8 Kc7 loss in 2 half-moves