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[ECO code E46] Do not scroll the screen..! Move Move Move Here Move Here Move Here
NIMZO-INDIAN DEF. - Rubinstein System
(The) Samisch-Rubinstein Var. (alt. route)

Black's Kt5(b4) bishop under P attack took White's Kt on QB6(c3) with check, inviting an exchange.
White's QKtPawn exchanges, removing the bishop, and he has to accept doubled QBPs. Can arise via Sämisch (where ECO main) or Rubinstein routes.
    White  Black	White  Black
 1. P-Q4   Kt-KB3    5.	P-QR3  BxKt ch
 2. P-QB4  P-K3	     6.	PxB
 3. Kt-QB3 B-Kt5
 4. P-K3   0-0	 Main 5W-6W,4B,4W route

BLACK to Move or Undo or Jump or Clear
 
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Chess Board

BLACK moves Queen's Pawn:

P-Q3 (d6) or P-Q4 (d5) ?

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