Expert Sudoku Solver » sudoku

Sudoku around the globe.

martinp — Sat, 22 Aug 2009 09:12:31 +0000

I’m still trying to work out how to get this linked in so that you can all contribute to this….but I am prevaricating so here’s the first picture of Sudoku from around the globe. If you have a picture from your own country, why not send them to me at martinp@expertsudokusolver.com and I will include them [...]

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Sudoku around the globe.

How to play sudoku – Conclusion

martinp — Sun, 26 Jul 2009 08:17:37 +0000

I hope you are starting to feel more like an accomplished sudoku solver if you have been following along with this series on how to solve an easy sudoku puzzle. We are close to the end of this puzzle now, so this post will the be the end of this mini-series. I hope to bring [...]

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How to play sudoku – Conclusion

How to play sudoku – Part 4

martinp — Fri, 24 Jul 2009 15:23:10 +0000

Welcome back to this short series showing how to solve sudoku puzzles from beginning to end. At this point in the puzzle, we are starting to see several nearly complete houses and so we can either complete them or use them to “lock down” candidates that we can then eliminate from other boxes. In the grid following [...]

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How to play sudoku – Part 4

How to play sudoku – Part 3

martinp — Thu, 23 Jul 2009 16:42:08 +0000

Hopefully you found a series of fairly easy 2’s and 4’s from the puzzle as we left it in the previous post. You should have been able to complete them like this. Again I have tried to use darker colors to show later entries. If you start with box 7 and see how the 2’s in [...]

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How to play sudoku – Part 3

How to play sudoku – part 2

martinp — Wed, 22 Jul 2009 18:25:10 +0000

How many of you have had a chance to look at the puzzle from yesterday? You will notice that I am trying to solve the grid without using any kind of pencilmarks. I think this is a valuable exercise for your logical thinking and you will only find that it gets even easier once you [...]

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How to play sudoku – part 2

Sudoku Techniques (Part 4) Box – Box interactions

martinp — Mon, 22 Jun 2009 18:46:48 +0000

The last technique we looked at can be extended slightly as candidates are exposed more clearly across the grid. In fact there are going to be times when we can’t directly find a new given in a box but we can limit the possibilities for our candidates so that they form a new “line” of [...]

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Sudoku Techniques (Part 4) Box – Box interactions

Sudoku Solving Techniques review

martinp — Sat, 20 Jun 2009 19:06:19 +0000

Right back at the beginning of developing this site, I promised to do a quick review of Sudoku Solving Techniques which you can see in the right hand margin. I think it’s appropriate to set up a reviews section to cover as many of the sudoku products that are out there and I will get [...]

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Sudoku Solving Techniques review

Sudoku Techniques (Part 3) – Box and Line Interactions

martinp — Fri, 19 Jun 2009 17:06:01 +0000

Before we get onto the next technique, I have an apology to make. I set you on an impossible task at the end of the last post, suggesting that there might be a hidden single in 2,7 which of course was complete nonsense! Oh well….my long road to being an “expert” sudoku solver just got [...]

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Sudoku Techniques (Part 3) – Box and Line Interactions

Sudoku Techniques (Part 1) – Naked Singles

martinp — Tue, 16 Jun 2009 21:21:21 +0000

Now that we have some ways to describe the layout of a sudoku grid, we can start to build up the techniques needed to solve sudoku puzzles. I intend to cover a specific method in each post but I will mark each one with a difficulty level so that you can jump in wherever you feel [...]

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Sudoku Techniques (Part 1) – Naked Singles

Welcome to Expert Sudoku Solver

martinp — Wed, 10 Jun 2009 16:23:19 +0000

So you’ve decided to become a Sudoku Solver. How many times have you desperately tried to get the puzzle in front of you to come out right? How many times have you sat next to someone who is looking at exactly the same newspaper as you, but they are cruising through the same Sudoku which [...]

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Welcome to Expert Sudoku Solver