d5 Nc6 Bf5
That's bad
Be careful about developing most ambitiously. You don't want to get into a sicilian Najdorf colors reversed down a tempo, do you? It's fine if they do stupid moves multiple times, but not once. If they play a3 or h3 or any other stupid looking move (except g4 or b4 maybe, which are different animals) you should always look to get simple equality by playing a london system where a tempo doesn't matter much and be satisfied with comfortable equality
it isnt in the opening book?
What?
Be careful about developing most ambitiously. You don't want to get into a sicilian Najdorf colors reversed down a tempo, do you? It's fine if they do stupid moves multiple times, but not once. If they play a3 or h3 or any other stupid looking move (except g4 or b4 maybe, which are different animals) you should always look to get simple equality by playing a london system where a tempo doesn't matter much and be satisfied with comfortable equality
it isnt in the opening book?