Chess Board
[ECO code C42] Move Move Move Here Move Here
PETROFF'S DEFENCE
Main line (alt. route)
White castles on the king's side, bringing his King's Rook into play near the open king's (e-)file.
Black develops his King's Bishop to the second rank to prevent an 8.R-K1 pin, enables castling and is now poised to counter-attack White's QP.
    White  Black	White  Black
 1. P-K4   P-K4	     6.	B-Q3   Kt-QB3
 2. Kt-KB3 Kt-KB3    7.	0-0    B-K2
 3. KtxP   P-Q3
 4. Kt-KB3 KtxP
 5. P-Q4   P-Q4	     Main 7B,6B route
WHITE to Move or Undo or Jump or Clear
 
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