Chess Board
[ECO code C43] Do not scroll the screen..! Move Move Here Move Here
PETROFF DEFENCE - Steinitz Attack
(to) Steinitz / Modern Vars.
White's king's pawn under threat moved forward, gaining space and attacking Black's K-side knight.
Black's KB3(f6) Knight under KP attack moves on to K5(e4), its most active square (just vacated by White's KP), and contests for KKt4(g5) control.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-KB3
 3.	P-Q4	PxP
 4.	P-K5	Kt-K5
WHITE to Move or Undo or Jump or Clear
 
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Chess Board

WHITE moves Queen:

QxP (Qxd4) or Q-K2 (Qe2) ?

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