Chess Board
[ECO code B03]
TRANSPOSITION
ALEKHINE'S DEF. (Modern V.) to CARO-MASI DEF.
White advanced his QP to the centre to support his frontier KP and deter 3..P-QB4, rather than attack the knight immediately by 3.P-QB4 or 3.Kt-QB3.
Black transposes into a subset of the Caro-Kann Defence by pushing his QBPawn out to QB3(c6). Regarded as inferior but with surprise value. B-Alt. 
    White  Black    Transp.White Black
 1. P-K4   Kt-KB3   (1.	P-K4   P-QB3 )
 2. P-K5   Kt-Q4    (2.	P-Q4   Kt-KB3)
 3. P-Q4   P-B3	    (3.	P-K5   Kt-Q4 )
Continue: Transpose or Undo or Jump or Clear