Dan LeKander's Sudokus - #197-#200

By: Susan W. Smith

Volume 19, Issue 5, May 2024

Hold it!  See the number 200 - that means Dan LeKander has presented over the years to our TI Life readers, 200 Sudoku Puzzles. That means that those of us who have solved the puzzles can take a big Bow...   Thanks Dan for all you have done and continue to do for us.  We all appreciate it.

Note:  PUZZLE PREPARATION

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

  1. FILL IN DATA FROM OBSERVATIONS
  2. FILL IN OBVIOUS ANSWERS
  3. FILL IN NOT-SO-OBVIOUS ANSWERS
  4. MARK UNSOLVED CELLS WITH OPTIONS THAT CANNOT EXIST IN THOSE CELLS
  5. FILL IN THE OPTIONS FOR THE UNSOLVED CELLS

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 #197?

Puzzle #197

(The answer follows the conclusion of Puzzle #200, the feature puzzle for this month)

Simply a Logic Puzzle

Difficult rating … 2.5/10
(Rating based on puzzles not requiring advanced techniques)

Puzzle #198

Impossible to solve?

Impossible?  No.  Difficult?  Extremely.   Puzzle #199 may be a challenge for you.  Advanced Techniques (Steps 6 and/or 7) are required.  Difficult rating 9.6/10.

Puzzle #199

Feature Puzzle

Difficult rating … 3/10
(Rating based on puzzles requiring advanced techniques)

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

May the gentle winds of Sudoku be at your back,

By Dan LeKander

Clue for Puzzle #197    What is your next move?  In box 4 we see that C2R5 & C3R5 are limited to options 2 & 6; therefore, a 6 cannot exist in C4R5, C5R5 or C6R5.  In box 8 a 6 can only exist in C6R7 or C6R8; therefore a 6 cannot exist in C6R4, C6R5 or C6R6.  Therefore, the only cell in box 5 that can be a 6 is C4R6.  C4R6=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, we 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.


Past Issues

Here are links to all past Sudoku Puzzle Challenge beginning: February 2016, March 2016, April 2016, May 2016, June 2016, July 2016, August 2016, September 2016, October 2016, November 2016, December 2016, January 2017, February 2017, March 2017, April 2017, May 2017, June 2017, July 2017, August 2017, September 2017, October 2017, November 2017, December 2017, January 2018, February 2018, March 2018, April 2018, May 2018, June 2018, July 2018, August 2018, September 2018, October 2018, November 2018, December 2018, January 2019, February 2019, March 2019, April 2019, May 2019, June 2019, July 2019, August 2019, September 2019, October 2019, November 2019, December 2019, January 2020, February 2020, April 2020, May 2020,  June 2020 and July 2020, August 2020,  September 2020, October 2020, November 2020 and December 2020, January 2021, February 2021, March 2021, April 2021, May 2021, June 2021, July 2021 , August 2021, September 2021 ,  October 2021, November 2021, December 2021, January 2022, February 2022, March 2022, April 2022 , May 2022, June 2022, July 2022 , August 2022, September 2022, October 2022, November 2022, December 2022, January 2023, February 2023, March 2023, April 2023, May 2023, June 2023, July 2023, August 2023, September 2023, October 2023, November 2023, December 2023 and January 2024, February 2024, March 2024 and April 2024.

Dan recommends the following Steps to complete the puzzles.

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 19, Issue 5, May 2024, Sports, Current


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