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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Ka4 draw
3 Ka6 draw
4 Kb5 draw
5 Kb6 draw
6 Nb6 draw
7 Nb8 draw
8 Nc5 draw
9 Ne5 draw
10 Nf6 draw
11 Nf8 loss in 16 half-moves