Chess Board
[ECO code C41]
TRANSPOSITION
PHILIDOR DEFENCE to SCOTCH GAME (Side Var.)
White threatened 4.PxP to trade pawns and then queens (stopping Black castling), to gain by 6.KtxP.
Black's poor 3..Kt-QB3 is often made by beginners (correct being 3..Kt-Q2) - it can cause him to forego castling and lose a tempo in defending his weak KBP despite equal exchanges of pawns and Kts. B-Alt.
    White  Black    Transp.White Black
 1. P-K4   P-K4		  (1.)
 2. Kt-KB3 P-Q3	    (3.	Kt-KB3 Kt-QB3)
 3. P-Q4   Kt-QB3?! (4.	P-Q4   P-Q3?!)
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