Chess Board
[ECO code A20] Move Move Here
ENGLISH OPENING - Sicilian Var.
(Nimzowitsch to) Three Kts. System (alt. route)

Black developed his queen's knight to QB3(c6) and defended his KP, a move perhaps inferior to 2..P-K5 but taking (temporary) control of White's Q4(d4).
White develops his Queen's Knight to QB3(c3) taking control of Q5+K4(d5+e4). W-Alt.
     White   Black
 1.  P-QB4   P-K4
 2.  Kt-KB3  Kt-QB3
 3.  Kt-B3	    Main 3W,2W route

BLACK to Move or Undo or Jump or Clear
 
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