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

EGTB: win in 4 half-moves

# move score
1 Nb1 win in 3 half-moves
2 Nb3 win in 3 half-moves
3 Nc4 win in 3 half-moves
4 Nf3 loss in 6 half-moves
5 Ne4 loss in 2 half-moves
6 Nf1 loss in 2 half-moves