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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kc3 win in 5 half-moves
3 Kb3 win in 9 half-moves
4 Kb4 win in 11 half-moves
5 Kd3 draw
6 Kd4 draw
7 Na1 draw
8 Na3 draw
9 Nb4 draw
10 Ne3 draw
11 Kc5 loss in 2 half-moves
12 Kd5 loss in 2 half-moves
13 Nd4 loss in 2 half-moves
14 Ne1 loss in 2 half-moves