Playing …d6 and turning it back into a Dragon
1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 d6 8.f3 O-O 9.Qd2
- The mistake
- Filling in …d6 because the Dragon has a pawn there.
- Why it costs
- The tempo the whole opening was built to save has just been spent, and the position is a Yugoslav Attack with White a move to the good. That is the exact position 4…g6 was chosen to avoid.
- Instead
- …Nf6 and …d5 in one go, or …Nxd4 first and then …d5. The pawn structure that results is less tidy, and it is the point of the opening.