SuDoKu Secrets Revealed(c)

http://sudokoeasy.blogspot.com/

 

Link to download ebook with step by step examples of difficult puzzles: http://sudokoeasy.blogspot.com/

 

Donald R. McCrary (c) 2008

 

INTRODUCTION< xml="true" ns="urn:schemas-microsoft-com:office:office" prefix="o" namespace="">

Forget the complex techniques – hidden pairs, naked pairs, x-y wings, forcing chains, etc.  These are all hard to find and see.  The methods you will learn in the following text will simplify your search for solutions.  Puzzles that took you hours to solve will be revealed in half the time.  You will learn to minimize the number of pencil marks in cells to 2 or 3 numbers.

ACKNOWLEDGEMENTS

My thanks go to Marge LaFrance for all the detailed and careful editing.  There are many stumbling blocks in back-tracking through these solutions.   Marge was invaluable.  

CONTENTS

1.0       Approach

1.1       Terminology

1.2       Minimizing numbers to scan speeds eye recognition

1.3       Arrange numbers to scan in a pattern

1.4       Indicate when box is full of  “Only Can Be” numbers

2.0       One – Two – Three

2.1       Scan Horizontal and Vertical Blocks

2.2       Fill in the “Only One”.  Mark the Only Two possibilities.  Use only 3 or more possibilities when you have exhausted all else

2.3       Repeat horizontal and vertical scan after discoveries.

2.4       Look for blocks , rows, columns with minimum blanks and fill in the “only can be’s"

2.5       Secrets of the “ONLY TWO’s”

3.0       Logic diagram