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

EGTB: win in 4 half-moves

# move score
1 Kaa7 win in 3 half-moves
2 Kba7 win in 3 half-moves
3 Kc8 draw
4 Kab7 loss in 2 half-moves
5 Kbb7 loss in 2 half-moves
6 Kc7 loss in 2 half-moves