Chess Board
[ECO code B28] Move Move Here
SICILIAN DEFENCE - O'Kelly Var.
The Reti Var. (or Maroczy Bind) - alt. route
Black's QBP removed White's QP to prevent White gaining space by a choice of both 5.P-Q5 and 5.P-K5.
White exchanges, his K-side Knight removing the new doubled QP on Q4(d4). Maroczy Bind pawns were once thought to give White clear advantage.
    White  Black	White  Black
 1. P-K4   P-QB4     5.	KtxP
 2. Kt-KB3 P-QR3
 3. P-B4   P-K3
 4. P-Q4   PxP	 Main 3B-5W,2B-3W route
BLACK to Move or Undo or Jump or Clear
 
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