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

EGTB: win in 2 half-moves

# move score
1 b4 win in 1 half-moves
2 Ka5 draw
3 Ka7 draw
4 Kb6 draw
5 Kb7 draw
6 Kc7 draw
7 Kc8 draw
8 Kd7 draw
9 Ke7 draw
10 Ke8 draw
11 Nf2 draw
12 Nf4 loss in 2 half-moves
13 Ng1 loss in 2 half-moves
14 Ng5 loss in 2 half-moves