Chess Board
[ECO code C30] Move Move Here
KING'S GAMBIT DECLINED
Petrov's Defence (alt. route)
Black's KB3(f6) knight took the rear doubled KP on K5(e4) to limit White's natural QKt development.
White's King's Bishop's Pawn captures Black's king's pawn on K5(e5), completing an exchange. 
     White   Black
 1.  P-K4    P-K4
 2.  P-KB4   Kt-KB3
 3.  Kt-KB3  KtxP
 4.  PxP	  Main 4W,3W route
BLACK to Move or Undo or Jump or Clear
 
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