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

EGTB: win in 4 half-moves

# move score
1 Ka5 win in 3 half-moves
2 Kb5 draw
3 Kc5 draw
4 Kc6 draw
5 Kc7 loss in 58 half-moves
6 Ka6 loss in 50 half-moves
7 Ka7 loss in 48 half-moves
8 Kb7 loss in 48 half-moves