[ECO code C79]
The Russian Defence (aka. Steinitz Var.)
Black's Pawn to Q3(d3) switches his KP support and frees his QB (rejecting the radically more open main 5..KtxP game, or the closed 5..B-K2). B-Alt.
White Black 1. P-K4 P-K4 2. Kt-KB3 Kt-QB3 3. B-Kt5 P-QR3 4. B-R4 Kt-B3 5. 0-0 P-Q3 Transp.from STDD.
WHITE to or Undo or Jump or Clear
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