Chess Board
[ECO code B02] Move Move Move Move Move Here Move Here Move Here Move Here
ALEKHINE'S DEFENCE - Two Pawns Var.
(to) Four Pawns Attack / Exch. Var. (alt. route)
White's QP advanced to the centre, supporting his frontier KP and freeing his KB for development.
Black's own Pawn to Q3(d6) deters 5.P-B5. frees his QB and attacks the White KP to keep pressure on the centre. "Main" route in books until ECO codes.
     White   Black  
 1.  P-K4    Kt-KB3
 2.  P-K5    Kt-Q4
 3.  P-QB4   Kt-Kt3
 4.  P-Q4    P-Q3    Main 4WB,3WB route
WHITE to Move or Undo or Jump or Clear
 
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