Chess Board
[ECO code C39] Do not scroll the screen..! Move Move Here Move Here
(KGA:) KING'S KNIGHT'S GAMBIT
(to) Allgaier / Kieseritzky Gambits
White's KRPawn attacked Black's KtP to undermine his intended king's-side structure.
Black has little option but to push his KtPawn on to attack White's KKt. [If 4..PxP his pawns are badly weakened by two doubled files and White's free R.]
	White	Black
 1.	P-K4	P-K4
 2.	P-KB4	PxP
 3.	Kt-KB3	P-KKt4
 4.	P-KR4	P-Kt5
WHITE to Move or Undo or Jump or Clear
 
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Chess Board

WHITE moves king's-side Knight:

Kt-K5 (e5) or Kt-Kt5 (g5) ?

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