Chess Board
[ECO code E40] Move Move Move Here Move Here
NIMZO-INDIAN DEF. - Rubinstein Sys.
(to) Keres Variation

White's QKtP exchanged B-for-Kt on QB3(c3).
Black advances his QBPawn to QB4(c5) to fix and blockade White's doubled QBPs, attack White's QP and even invite him to triple his QBPs! B-Alt.
    White  Black	White  Black
 1. P-Q4   Kt-KB3    6.	PxB    P-B4
 2. P-QB4  P-K3
 3. Kt-QB3 B-Kt5
 4. P-K3   P-Q4
 5. P-QR3  BxKt ch  Transp.from Samisch

WHITE to Move or Undo or Jump or Clear
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