Chess Board
[ECO code C42] Do not scroll the screen..! Move Move Here Move Here Move Here
PETROFF'S DEFENCE
Main line
White's KKt took Black's KP and invited 3..KtxP.
Black's Queen's Pawn out to Q3(d6) frees his QB and attacks White's knight so as to gain a tempo before recouping the pawn by 4..KtxP. The value of this key move was first analysed by Russian player Alexander Petroff (1794-1867). B-Alt.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-KB3
 3.	KtxP	P-Q3
WHITE to Move or Undo or Jump or Clear
 
Do not scroll the screen...!  
You can do better than that! Try another move!!

- press your browser "back" button to see the board again -
(ignore if you scrolled to here)
Do not scroll the screen...!
Chess Board

WHITE moves king's-side Knight:

Kt-B4 (Nc4) or Kt-KB3 (Nf3)
or KtxP (Nf7) ?

Do not scroll - press your
browser "back" button
to cancel this choice of moves