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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Kb8 win in 3 half-moves
3 Ka7 loss in 2 half-moves
4 Ng4 loss in 2 half-moves
5 Nf1 loss in 1 half-moves
6 Nf3 loss in 1 half-moves