Punishing innacurate opening play


well_hung_pawn> My opponent resigns here after only 13 moves because he makes a few minor innacuracies in the opening which lead to massive material loss.
Your opponent's minor opening inaccuracies 3...Bc5 and 6...Qe7 gave you an advantage, but the crushing win was only made possible by your opponent's decision to blast open the center when his king was in the center and yours was not. Eg, 7...Bxd2+ 8.Nbxd2 Nf6! 9.O-O O-O and Black's a bit worse but lives to tell the tale.
Tactically ...Qd6?? and ...Qg6?? sure helped!