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

EGTB: win in 4 half-moves

# move score
1 Kd6 win in 3 half-moves
2 Kb5 draw
3 Kb6 draw
4 Kc5 draw
5 Kc7 draw
6 Kd5 draw
7 Kd7 draw
8 Nf6 draw
9 Ng7 draw
10 Nd6 loss in 20 half-moves
11 Nc7 loss in 18 half-moves
12 Kb7 loss in 12 half-moves