Chess Board
[ECO code A00] Move Move Here
SARAGOSSA OPENING
(to) Colle System (alt. route)
White advanced a supported QP to the centre to control Black's K4+QB4 (e5+c5), free White's QB and provide an alternate square Q2(d2) for his QKt.
Black advances a supported Queen's Pawn to the centre, increasing his control of White's K4(e4). Regarded as inferior to 2..P-KKt3. B-Alt.
     White  Black
 1.  P-QB3  Kt-KB3
 2.  P-Q4   P-Q4     Main 2B,1B route
WHITE to Move or Undo or Jump or Clear
 
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