Chess Board
[ECO code E00] Move Move Here
TRANSPOSITION
CATALAN OPENING to BOGOLJUBOW DEFENCE

White's queen's bishop to Q2(d2) relieved check and reversed Black's bishop attack.
Black develops his Queen to K2(e7), adopting a flexible line to defend (rather than exchange) his threatened bishop and thus maintain a B-pin. B-Alt.
     White   Black
 1.  P-Q4    Kt-KB3
 2.  P-QB4   P-K3
 3.  P-KKt   B-Kt5 ch
 4.  B-Q2    Q-K2    Equiv.via Keres D.

WHITE to Move or Undo or Jump or Clear
 
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