Chess Board
[ECO code C77] Do not scroll the screen..! Move Move Move Here
RUY LOPEZ - Morphy Defence
Jaffe Gambit - Steinitz D. Deferred (alt. route)

White's QBP gambit gave his light B a flight square.
Black declines 5.KtxP and sets his Queen's Pawn on Q3(d6) to switch his KP defence (as now imposing a QKt self-pin) - seen more via the Steinitz DD. B-Alt.
     White   Black
 1.  P-K4    P-K4
 2.  Kt-KB3  Kt-QB3
 3.  B-Kt5   P-QR3
 4.  B-R4    Kt-B3
 5.  P-B3    P-Q3    Main 5B,4B route

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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