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 draw
3 Na4 draw
4 Nd3 draw
5 Kd8 loss in 10 half-moves
6 Nd1 loss in 4 half-moves
7 Kc7 loss in 2 half-moves
8 Kd7 loss in 2 half-moves
9 Nc4 loss in 2 half-moves