Chess Board
[ECO code C41] Move Move Here
PHILIDOR'S DEF. - Jaenisch Counter-Attack
(to) Rellstab / Sokolsky Variations
Black developed his KKt to offset a 4.PxP threat by counter-attacking White's KP. A book by Jaenisch (1813-72) started modern openings development.
White's aggressive Q4(d4) Pawn captures Black's KP to attack Black's KKt and QP. W-Alt.
	White   Black
 1.	P-K4    P-K4
 2.	Kt-KB3  P-Q3
 3.	P-Q4    Kt-KB3
 4.	PxP
BLACK to Move or Undo or Jump or Clear
 
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