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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kd4 win in 3 half-moves
3 Kd5 win in 3 half-moves
4 Nd6 win in 3 half-moves
5 Nd8 win in 3 half-moves
6 Ng5 win in 3 half-moves
7 Kd3 win in 7 half-moves
8 Kb3 win in 11 half-moves
9 Kc3 win in 11 half-moves
10 Ne5 win in 11 half-moves
11 Nh6 win in 11 half-moves
12 Nh8 win in 13 half-moves
13 Kb5 loss in 2 half-moves
14 Kc5 loss in 2 half-moves