Chess Board
[ECO code C41] Move Move Move Move Here Move Here Move Here
PHILIDOR'S DEFENCE
The Jaenisch Counter-Attack

White threatened 4.PxP to trade pawns and then queens (stopping Black castling), to gain by 6.KtxP.
Black's King's Knight develops to KB3(f6). Carl Jaenisch's 1842 book counter against White's KP has "stood the test of time" (Oxford Companion), a strategy also seen in the Ponziani. B-Alt.
     White  Black
 1.  P-K4   P-K4
 2.  Kt-KB3 P-Q3    Transp.from Petroff
 3.  P-Q4   Kt-KB3  Transp.from Pillsb.

WHITE to Move or Undo or Jump or Clear
 
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