[ECO code A40] |
(to) Colle System (alt. route) Black's Queen's Pawn advance to Q4(d5) frees his QB and takes control of K5(e4), so so that the game may yet become a form of QGD, Slav Defence. White Black 1. P-Q4 P-QB3 2. Kt-KB3 P-Q4 Main 2B,1B route WHITE to or Undo or Jump or Clear |
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