[ECO code A11]
ENGLISH OPG. (Anglo-Slav Def.) to QGD. (Slav Def.)
Black advances his QPawn to the centre, frees his QB and attacks White's undefended QBP, turning the opening into a sound Queen's Gambit Declined, Slav Defence. After a (likely) 3.Kt-QB3 Black may transpose further into a Semi-Slav or other lines.
White Black Transp.White Black 1. P-QB4 P-QB3 (2.) 2. P-Q4 P-Q4 (1.)
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