Chess Board
[ECO code C42] Move Move Here
PETROFF DEF. - Boden-Kieseritzky Gambit
Side Variation

White's King, forced to defend his Q+KR, removes Black's knight on KB2(f2) and loses castling rights.
Black now develops his King's Bishop to QB4(c5) with check, and enables castling.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-KB3
 3.	B-B4	KtxP
 4.	Kt-B3	KtxBP?!
 5.	KxKt    B-B4 ch

WHITE to Move or Undo or Jump or Clear
 
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