More tricks using logic. Tutorial # 47
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- čas přidán 28. 05. 2024
- #sudokuguy #learn sudoku
www.sudokuguy.com to see index of strategies covered on this site.
More tricks in this tutorial.
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Thought for the day. "Do what you feel in your heart to be right-for you'll be critisized anyway" Eleanor Roosevelt - Jak na to + styl
This was great. It's so much fun to watch you solving the more advanced puzzles. Adding the specific references for foundational tutorials is very helpful -- thank you!
Thank you your positive comment. There is more coming. Usually on the 21st of each month. Have fun. When you subscribe you will get a notification that a new tutorial has been uploaded. subscribing is FREE
As always Robyn - Thanks! I’m heading off to “Danger! Danger” as soon as this post is done .. looking forward to your next video. 👍🏼
Great
I always enjoy your videos. Thanks again!
Hi Jim. So glad you found my site."the most popular site on line to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve.
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Keep these videos coming!!
Thanks for your comment. I put up a new tutorial every month about the 21 st of the month. If you have subscibed it is FREE
Love to you Robyn!
HI Linda Glad you are learning. Also glad you found my site."the most popular site on line to learn sudoku” Please share with others.
Subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve. The link below will take you to all of my videos from easy to difficult.
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Thank you Robin. 47! Wow.
HI Carl, So glad you found my site."the most popular site on line to learn sudoku" Please share with others, subscribe and click the bell by the subscribe button. Have fun as you learn step by step how to solve.
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Nice
Thanks Amit.
I am not clear why 4 9 get result 6. What is danger?
I have the same question. I’ll be back in a minute , I need to go play black jack(21)
If row 2, column 6 (r2c6) were not set to 6, its candidates would also be 4,9, leading to a puzzle with two possible solutions - as it would not matter to the rest of the puzzle which way 'round the 4,9 were placed in those 4 cells.
The situation here (4 identical bivalue cells, with one cell having 1 additional candidate, and occupying two rows, two columns, and two 3x3 boxes) is commonly called a Unique Rectangle (type 1). This falls under the general category of "Uniqueness", which states that any published Sudoku should have only one valid solution. There's some debate in the Sudoku community as to whether or not one should use uniqueness when solving a Sudoku - I'm all for it, but one can usually find a way to the finish line without using it.
Right
How very sneaky, I ❤it. 😊