Demanding Sudoku Puzzle - Hard to Solve

Here is a Demanding Level Sudoku puzzle from the Will Shortz book Surrender to Sudoku, 200 Irresistibly Hard Puzzles. The puzzles in this book are all fairly hard to solve. Will is the crossword puzzle editor for the New York Times. Watch to see the sudoku techniques and tricks I use to solve puzzles. Have fun with it.

[computerkid]

Your Sudoku tutorials are easy to follow and down-to-earth. Thanks.

[NMalteC]

You were able to solve the puzzle solely by applying the Snyder notation. In my opinion that wasn't a hard puzzles at all. But you did all that was necessary.

[petrajudd]

The sound of the rubber scratching the paper gives me the shivers. Enjoyed the rest of the video....well solved!

[balakrishnasharma]

YOU SHOWED ME POSSIBILITY OF BLOCKING NUMBER ( IN THIS CASE NUMBER 8) BY EXTENSION AND LCR METHOD. THIS METHOD REALLY WORKS .

[antoniojhuerta]

Best, fast and clear explanation ever... Thx!

[sapodilla]

The jumps in logic at the beginning (especially with the 8) took me a bit to work out. I guess with more practice it will be easier to spot where numbers have to go.

[georgesthibaudeau]

Note in 6th minute when you place candidates 2 in rows 1 and 2 of c 7, the 2 is in fact restricted to r2c7 due to the intercepring 79 in that row (c5 and 6. The puzzle relatively easy, so I did it without the help of pencil marks, in under 16 minutes. Enjoyable ride. The snyder notations you teach is a great one to solve more difficult puzzle, or in fact move faster for a puzzle such as this one..

[thetruthoftheuniverse]

very good tutorial and learn lots from this video

[em]

Very good video, good explaining and nice clear voice, thanks so much. Please get a good eraser.

[neilmitchell]

at 1:00 there could have been an eight in the bottom right cell too, is it not so?

[larrypoorman]

Not everyone is an expert and thinks that this puzzle is easy. I didn't. Thanks very much.

[petrahladkyj]

How did you know where to put that first 8? It could have also gone into the bottom right corner, no?

[mathiaspoulson]

no triples, no quads, nothing special at all, in all this would be classified as a medium sudoku at best

[ravindrakumarsinghal]

This is simple puzzle. Hard and diabolic puzzles are those where one has to presume one or sometimes two numbers and has to use trial and error method.

[kaisykaisy]

Thank you, I like your technique in solving the sudoku puzzles also I would like to mention that the audio sound is very clear. My best regards

[birchandghoshdastidar]

I have been learning sudoku puzzle solving for sometime, watching the videos of half a dozen experts. Among them, I like the most his style and method of teaching. In this video he has made use of the technique DRE/DCE which is frequently used by a noted expert. I do not find any fault with his approach here. It is a well-known axiomatic concept that a puzzle must always have a unique solution. If it transgresses this norm, it becomes an invalid sudoku puzzle. I don't find anything wrong with his solving the puzzle here. However, I would expect him to take up solutions of some expert level/evil sudoku puzzles which should have an element of enjoyment for a sudoku aficionado.

[زهيرصافية]

شكرا لك وارجو ان يكون ترجمة الى اللغة العربية

[intel]

I'm from Thailand. I've been playing Sudoku for 1 month and 30 days. I'm an expert player and I'm fascinated by the technique. I spent 200 minutes per game. Of course, what I got after the end of the game was the answer to one puzzle, one technique per game, and I saw you write. I have 200+ puzzles, 200 minutes, 200 puzzles. I will not give up.

[grihalakshmiheigrujam]

How long it takes to solve a difficult one??

[saganandroid]

2:47 in and I don't see you teaching anything here thus far. I am only able to follow you because I'm already fairly familiar with Sudoku.