Chess Board
[ECO code C23] Move Move Here
(CLASSICAL) BISHOP'S OPG. - Philidor Var.
Lewis Counter-Gambit
White correctly removed the gambit QP on Q5(d5) with his QB4(c4) bishop, re-targeting KB7(f7).
Black's King's Knight develops to attack both White's bishop and KP, planning 5..KtxB, 6.PxKt..QxP for command of the centre, and enables castling.
	White	Black
 1.	P-K4	P-K4
 2.	B-B4	B-B4
 3.	P-QB3	P-Q4
 4.	BxP	Kt-KB3
WHITE to Move or Undo or Jump or Clear
 
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