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

EGTB: win in 16 half-moves

# move score
1 K5b6 win in 15 half-moves
2 Kb4 draw
3 b4 loss in 4 half-moves
4 K5a6 loss in 4 half-moves
5 Ka4 loss in 4 half-moves
6 Ng5 loss in 4 half-moves
7 K7a6 loss in 3 half-moves
8 K7b6 loss in 3 half-moves
9 Ka8 loss in 3 half-moves
10 Kb7 loss in 3 half-moves
11 Kb8 loss in 3 half-moves
12 Nf6 loss in 2 half-moves
13 Nf8 loss in 2 half-moves