Chess Board
[ECO code C57] Move Move Move Here
TWO KNIGHTS DEFENCE - Knight Attack
Ulvestad Variation
White's Knight on KKt5(g5) completes a queen exchange on KB3(f3), and targets Black's KP.
Black develops his Queen's Bishop to Q2(d7) for an exchange on QB3(c6) avoiding 10.BxB+ch.
    White  Black	White  Black
 1. P-K4   P-K4	     6.	BxP    QxP
 2. Kt-KB3 Kt-QB3    7.	Kt-B3  QxKtP
 3. B-B4   Kt-B3     8.	Q-B3   QxQ
 4. Kt-Kt5 P-Q4!     9.	KtxQ   B-Q2
 5. PxP	   P-Kt4
WHITE to Move or Undo or Jump or Clear
 
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When castling always touch the king first
Under FIDE laws of chess, if a player deliberately touches a rook and then his king, he is not allowed to castle on that side on that move but must still move the rook if legally possible.

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