Chess Board
[ECO code B06] Move Move Here
MODERN DEFENCE
(leading to Pirc Defence Deferred)
Black fianchettoed his KB to exert control over the long dark diagonal so as to attack White's centre.
White often deploys his King's Knight to KB3(f3) to strengthen his centre (3..BxP being no threat as 4.QxB would target Black's KR), resuming control of Black's K4(e5) for a possible P-K5. W-Alt. 
     White   Black
 1.  P-K4    P-KKt3
 2.  P-Q4    B-Kt2
 3.  Kt-KB3	 Transp.from Zukert.O.
BLACK to Move or Undo or Jump or Clear
 
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