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 Ka6 draw
3 Kb5 draw
4 Kb6 draw
5 Nc7 draw
6 Ng7 draw
7 Ka4 loss in 2 half-moves
8 Nd6 loss in 2 half-moves
9 Nf6 loss in 2 half-moves