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

EGTB: win in 4 half-moves

# move score
1 Kab7 win in 3 half-moves
2 Ka6 win in 5 half-moves
3 Kb6 win in 5 half-moves
4 Kc7 win in 5 half-moves
5 Kc8 win in 5 half-moves
6 Kbb7 loss in 2 half-moves