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

EGTB: draw

# move score
1 b7 draw
2 Nc7 loss in 10 half-moves
3 Nb4 loss in 2 half-moves
4 Nc3 loss in 2 half-moves
5 Ne3 loss in 2 half-moves
6 Ne7 loss in 2 half-moves
7 Nf4 loss in 2 half-moves
8 Nf6 loss in 2 half-moves