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

EGTB: win in 4 half-moves

# move score
1 Na4 win in 3 half-moves
2 Kd2 loss in 44 half-moves
3 Kc4 loss in 26 half-moves
4 Kc3 loss in 18 half-moves
5 Ke2 loss in 14 half-moves
6 Kc2 loss in 8 half-moves
7 Nd1 loss in 4 half-moves
8 Kd4 loss in 2 half-moves
9 Ke3 loss in 2 half-moves
10 Ke4 loss in 2 half-moves
11 Nc4 loss in 2 half-moves