Warnsdorf spelling
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@ -632,13 +632,13 @@ The search can be made more efficient by using
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\key{heuristics} that attempt to guide the knight so that
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\key{heuristics} that attempt to guide the knight so that
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a complete tour will be found quickly.
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a complete tour will be found quickly.
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\subsubsection{Warnsdorff's rule}
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\subsubsection{Warnsdorf's rule}
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\index{heuristic}
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\index{heuristic}
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\index{Warnsdorff's rule}
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\index{Warnsdorf's rule}
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\key{Warnsdorff's rule}\footnote{This heuristic was proposed
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\key{Warnsdorf's rule}\footnote{This heuristic was proposed
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in Warnsdorff's book \cite{war23} in 1823.} is a simple and effective heuristic
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in Warnsdorf's book \cite{war23} in 1823.} is a simple and effective heuristic
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for finding a knight's tour.
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for finding a knight's tour.
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Using the rule, it is possible to efficiently construct a tour
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Using the rule, it is possible to efficiently construct a tour
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even on a large board.
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even on a large board.
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@ -660,7 +660,7 @@ possible squares to which the knight can move:
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\node at (3.5,1.5) {$d$};
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\node at (3.5,1.5) {$d$};
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\end{tikzpicture}
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\end{tikzpicture}
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\end{center}
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\end{center}
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In this situation, Warnsdorff's rule moves the knight to square $a$,
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In this situation, Warnsdorf's rule moves the knight to square $a$,
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because after this choice, there is only a single possible move.
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because after this choice, there is only a single possible move.
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The other choices would move the knight to squares where
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The other choices would move the knight to squares where
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there would be three moves available.
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there would be three moves available.
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