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

EGTB: win in 4 half-moves

# move score
1 Kb1 win in 3 half-moves
2 Ka2 loss in 2 half-moves
3 Kb2 loss in 2 half-moves
4 Nb3 loss in 2 half-moves
5 Nb7 loss in 2 half-moves
6 Nc6 loss in 2 half-moves
7 Nc4 loss in 1 half-moves