Chess Board
[ECO code C42] Move Move Here
PETROFF DEFENCE TRANSPOSITION
JAENISCH VAR. to KAUFMANN VAR.
White planned (via PxP) to enable BxKt.
Black adopts a position arising via the Kaufmann (5.P-QB4) by castling on the K-side to bring his King's Rook into play. 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.	P-B4   0-0
 4. Kt-KB3 KtxP
 5. P-Q4   P-Q4	 Main route via 5.P-B4
WHITE to Move or Undo or Jump or Clear
 
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