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

EGTB: win in 10 half-moves

# move score
1 Kb4 win in 9 half-moves
2 Kb6 win in 9 half-moves
3 b4 loss in 4 half-moves
4 Ka4 loss in 4 half-moves
5 Ka6 loss in 4 half-moves
6 Kf4 loss in 4 half-moves
7 Kf6 loss in 4 half-moves
8 Kg4 loss in 3 half-moves
9 Kg5 loss in 3 half-moves
10 Kg6 loss in 3 half-moves
11 Ng3 loss in 3 half-moves
12 Ke4 loss in 2 half-moves
13 Ke5 loss in 2 half-moves
14 Ke6 loss in 2 half-moves
15 Nf4 loss in 2 half-moves
16 Nf6 loss in 2 half-moves
17 Ng7 loss in 2 half-moves