Chess Board
[ECO code D30] Move Move Move Move Here Move Here
QUEEN'S GAMBIT
(back towards) Orthodox Defence (alt. route)

Black developed his king's bishop to K2(e7) to halve the pin on his KKt and enable castling.
White develops his Queen's Knight to QB3(c3), contesting for K4(e4) and threatening Black's QP.
    White  Black	White  Black
 1. P-Q4   P-Q4	     6. Kt-B3
 2. P-QB4  P-K3
 3. Kt-KB3 Kt-KB3
 4. B-Kt5  QKt-Q2
 5. P-K3   B-K2	   Main 6W,3W route

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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