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

EGTB: draw

# move score
1 Kb5 draw
2 Kb6 draw
3 Kc5 draw
4 Kd5 draw
5 Kd6 draw
6 Nb2 draw
7 Nb6 draw
8 Nc3 draw
9 Nc5 draw
10 Kb7 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Kd7 loss in 2 half-moves