Chess Board
[ECO code D86 > 89] Move Move Move Move Here Move Here
GRÜNFELD DEFENCE
(The) Old Exchange Variation

Black fianchettoed his KB and enabled ..0-0.
White develops his King's Bishop to QB4(c4), set for 8.KKt-K2 after. This was the main Exchange continuation for +50 years until the 1970s. W-Alt.
    White  Black	White  Black
 1. P-Q4   Kt-KB3    6.	PxKt   B-Kt2
 2. P-QB4  P-KKt3    7.	B-QB4
 3. Kt-QB3 P-Q4
 4. PxP	   KtxP
 5. P-K4   KtxKt

BLACK 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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