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

EGTB: win in 4 half-moves

# move score
1 Na5 win in 3 half-moves
2 Kb5 draw
3 Kb6 draw
4 Kc6 draw
5 Kd5 draw
6 Kd6 draw
7 Nd8 draw
8 Kb4 loss in 2 half-moves
9 Kc4 loss in 2 half-moves
10 Kd4 loss in 2 half-moves
11 Nd6 loss in 2 half-moves