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 Ka7 win in 1 half-moves
3 Kb7 win in 1 half-moves
4 Kb8 win in 1 half-moves
5 Nc7 loss in 1 half-moves
6 Nd6 loss in 1 half-moves
7 Nf6 loss in 1 half-moves
8 Ng7 loss in 1 half-moves