Chess Board
[ECO code B29]
SICILIAN TRANSPOSITION
NIMZOWITSCH to ORTHODOX / 4KTS VARS.
Black's QBP removed White's central QP on Q5(d4).
White's Knight on KB3(f3) completes both a pawn exchange and a transposition back to the Orthodox line by removing Black's doubled Q5(d4) pawn.
    White  Black    Transp.White Black
 1. P-K4   P-QB4	  (1.)
 2. Kt-KB3 Kt-KB3!? (2.	Kt-KB3  Kt-QB3)
 3. Kt-QB3 Kt-B3    (3.	P-Q4    PxP   )
 4. P-Q4   PxP	    (4.	KtxP    Kt-B3 )
 5. KtxP	    (5.	Kt-QB3	      )
Continue: Transpose or Undo or Jump or Clear