Chess Board
[ECO code C49] Move Move Move Here Move Here
LOPEZ FOUR KNIGHTS GAME
Double Ruy Lopez Opening

White castled and broke the half-pin on his QKt.
Black also castles, bringing his King's Rook into play and (like White) he breaks the half-pin on his QKt so that it can defend his KP when his QP moves.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-QB3
 3.	Kt-B3	Kt-B3
 4.	B-Kt5	B-Kt5
 5.	0-0	0-0

WHITE to Move or Undo or Jump or Clear
 
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