Chess Board
[ECO code C42] Move Move Here
PETROFF'S DEFENCE
The Lasker Variation
White's KR started an attack via the king's file.
Black develops his Queen's Bishop to KB4(f4) to support his threatened knight. B-Alt.
    White  Black	White  Black
 1. P-K4   P-K4	     6.	B-Q3   B-K2
 2. Kt-KB3 Kt-KB3    7.	0-0    Kt-QB3
 3. KtxP   P-Q3	     8.	R-K1   B-KB4
 4. Kt-KB3 KtxP
 5. P-Q4   P-Q4
WHITE to Move or Undo or Jump or Clear
 
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