[ECO code A47]
(to) Colle System
White pushes his King's Pawn out to K3(e3) in support of his queen's pawn and also frees his KB, adopting the beginnings of a Colle System, a six-move opening structure reached by several routes. W-Alt.
White Black 1. P-Q4 Kt-KB3 2. Kt-KB3 P-QKt3 3. P-K3
BLACK to or Undo or Jump or Clear
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