# Sudoku Puzzles #173-#176, November '23

### By: Dan LeKander

Volume 18, Issue 11, November 2023

Please enjoy these puzzles for this month, ranging from easy to challenging.

### Clueless?

We start with a Sudoku puzzle in progress, where it appears that there are no more obvious or not-so-obvious clues.  Can you find the hidden clue in Puzzle #173?

(The answer follows the conclusion of Puzzle #176, the feature puzzle for this month)

### Simply a Logic Puzzle

Difficult rating … 3/10
(Rating based on puzzles not requiring advanced techniques)

### Impossible to solve?

Impossible?  No.  Difficult?  Extremely.   Puzzle #175 will be challenge for you.  Advanced Techniques (Steps 6 and/or 7) are required.  Difficult rating 9.5/10.

### Feature Puzzle

Difficult rating … 8/10
(Rating based on puzzles requiring advanced techniques)

### PUZZLE PREPARATION

Prior to utilizing techniques 1-8, complete the 5 Steps of Puzzle Preparation …

1. FILL IN DATA FROM OBSERVATIONS
4. MARK UNSOLVED CELLS WITH OPTIONS THAT CANNOT EXIST IN THOSE CELLS
5. FILL IN THE OPTIONS FOR THE UNSOLVED CELLS

(Hint … If you need a refresher on Step 6, please click the April 2023 issue, if you need a re-fresher on Step 7, please click the January 2023 issue)

May the gentle winds of Sudoku be at your back,

Dan LeKander

Note: Clue for Puzzle #173 …  What are your next two moves?
C1R2=2, then C1R8=6.
__________________________________
Editor’s Note:  Dan would like to hear more from his readers regarding questions, comments and suggestions.  To confidentially reach Dan, please e-mail him at this address … info@thousandislandslife.com

Recently someone wrote to ask how to fill them out online. Unfortunately, you need to print them yourself,  but that is easy to do and I know you will have just as much fun. Also you can use a grid sheet and copy numbers onto the grid.

And, if you have not already done so, I suggest you purchase Dan’s book: “3 Advanced Sudoku Techniques, That Will Change Your Game Forever!” Purchase of a book includes a 50-page blank grid pad, 33 black and two green tokens. The book is available by contacting info@thousandislandslife.com.

Be sure to read the TI Life's review of Dan's book by Jesse Kahn published in Jun 2015.

Dan recommends the following Steps to complete the puzzle.

Step 1:  Sudoku Pairs, Triplets and Quads – See September 2015
Step 2:  Turbos & Interaction – See October 2015
Step 3:  Sudoku Gordonian Rectangles and Polygons – See November 2015
Step 4:  XY-Wings & XYZ Wings – See December 2015
Step 5:  X-Wings – See January 2016

Posted in: Volume 18, Issue 11, November 2023, Sports

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