Expert Sudoku Solver

What Does A Sudoku Expert Need?

martinp — Fri, 23 Jul 2010 21:17:41 +0000

I have left you to find your way round the site for some time now and I hope that it is laid out in a way that helps you to find the answers you need and grow as a sudoku expert. However, sites need to grow and change with time as well, so I thought that [...]

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What Does A Sudoku Expert Need?

Simple Sudoku Exposed!

martinp — Mon, 12 Oct 2009 09:54:14 +0000

Once upon a time, way back before the vacation period began, I promised you a series on how to use Angus Johnson’s fantastic Simple Sudoku on the PC as a tool to help you learn how to play sudoku. Well, it’s a bit rough round the edges, but here is the first fruit of that promise. [...]

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Simple Sudoku Exposed!

Post your own sudoku solver pics

martinp — Thu, 27 Aug 2009 16:57:30 +0000

I think I have cracked it! If you want to get involved with this mini-project, just post a picture of sudoku in your own country to flickr. I have created a “Global Sudoku” group that you can all post to….so throw them in, they should show up here. Post from: Expert Sudoku SolverPost your own sudoku [...]

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Post your own sudoku solver pics

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.

New possibilities for Expert Sudoku Solver.

martinp — Fri, 31 Jul 2009 14:08:36 +0000

Greetings Sudoku Solvers far and wide! While this isn’t a new post with a new sudoku technique for you, it is news of some exciting things that we will be doing over the next few posts. I have contacted Angus Johnson, you may remember I mentioned him in a previous post where I was looking at other [...]

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New possibilities for Expert Sudoku Solver.

Updates to the current reviews.

martinp — Wed, 29 Jul 2009 21:17:40 +0000

When I started the Expert Sudoku Solver site, I promised that I would try to get round to reviewing as many sudoku packages as I could. I confess to being a bit slow on this. However, it has been pointed out to me that I forgot to put the price on each of the reviews [...]

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Updates to the current reviews.

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

Technorati claim – please ignore :-)

martinp — Fri, 24 Jul 2009 10:52:58 +0000

5vb9ytd4hk Post from: Expert Sudoku SolverTechnorati claim – please ignore :-)

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Technorati claim – please ignore :-)

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

How to play sudoku – from the beginning.

martinp — Tue, 21 Jul 2009 16:20:59 +0000

There isn’t much feedback in the poll yet for me to gauge if you think you are a sudoku expert or not. However, it is clear that there are many more people who find that just getting started with sudoku is their biggest problem. What I have decided to do, is to actually solve an [...]

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How to play sudoku – from the beginning.

More site tweaks for Expert Sudoku Solver

martinp — Thu, 16 Jul 2009 08:57:44 +0000

Just an update on the site itself for those of you following the evolution of the blog. I have just switched the main RSS feed subscription (top right) to feedburner rather than relying on the built in feed all the time. As far as I know this won’t break any of you who are already subscribed, [...]

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More site tweaks for Expert Sudoku Solver

Sudoku Techniques (Part 9) – The Swordfish

martinp — Wed, 15 Jul 2009 16:19:47 +0000

This is going to be another post with a title designed to confuse you if you are a sudoku solver I’m afraid. Yet again if you are learning how to play sudoku, you may think you have arrived in the wrong place and worry that we are going to deal with angling tips instead of [...]

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Sudoku Techniques (Part 9) – The Swordfish

More help to become an expert sudoku solver

martinp — Wed, 08 Jul 2009 12:15:05 +0000

As I have been looking around in the course of learning how to play sudoku, I have found a lot of other sites on the internet that focus on many different aspects of sudoku and lots of sudoku techniques. Of course, I’m hoping that my own peculiar style will have kept you entertained and that you [...]

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More help to become an expert sudoku solver

Are you learning how to play sudoku?

martinp — Sun, 05 Jul 2009 21:37:05 +0000

A quick post today. I just added a poll on the right to see if Expert Sudoku Solver is really doing what is needed to help you learn how to play sudoku. Don’t be shy, let us all know where you are up to. The poll can be taken completely anonymously Post from: Expert Sudoku [...]

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Are you learning how to play sudoku?

Sudoku Techniques (Part 8) – The XY-Wing

martinp — Sat, 04 Jul 2009 18:36:17 +0000

As you make progress learning how to play sudoku, you will come across techniques that look similar to ones you have already learned but on your way to becoming an expert sudoku solver, the difference between them will become clearer as you practice. That is the case with the XY-Wing. In shape, it looks a little [...]

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Sudoku Techniques (Part 8) – The XY-Wing

How to solve your sudoku website issues.

martinp — Fri, 03 Jul 2009 11:23:28 +0000

A little bit more site maintenance today before we move on to a few more challenging topics. As much as I would like to devote my time to helping you to solve your sudoku puzzles, I needed to find a way to let newcomers who are just starting to play with sudoku find their way [...]

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How to solve your sudoku website issues.

Sudoku Techniques (part 7) – The X-Wing

martinp — Wed, 01 Jul 2009 18:36:57 +0000

How do you feel about your progress as a sudoku solver? By now, you should be picking up most puzzles without fear but there are plenty more sudoku tips to learn before we are finished with this subject. In theory, the subject for this post should be hidden triples and quads. I will confess to [...]

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Sudoku Techniques (part 7) – The X-Wing

Sudoku for kids review

martinp — Mon, 29 Jun 2009 09:01:09 +0000

The second in a sporadic series of sudoku product reviews. I came across Sudoku for Kids when my two daughters started asking me what I was doing with all the numbers in the “box thing”! Both of them are pretty bright (proud parent thing going on here) and have good number skills but I thought [...]

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Sudoku for kids review

Sudoku Techniques (Part 6) – Naked Triples and Quads

martinp — Sat, 27 Jun 2009 17:44:49 +0000

I was very tempted to put Naked Triplets in the title for this post after seeing the traffic that “Naked Pairs” generated. I can’t imagine why there would have been such a boost….I leave that as an exercise for the reader. Naked Triples (and quads) is another sudoku technique that will help you clear out the [...]

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Sudoku Techniques (Part 6) – Naked Triples and Quads

Sudoku difficulty in different newspapers

martinp — Fri, 26 Jun 2009 21:34:38 +0000

Another “miscellaneous” post before we move on. I wanted to give you an indication of what you should be able to do by now, just using the sudoku techniques discussed so far. I picked up this week’s Sunday Times (UK version) last night. Some of you will know that they publish a “Hard” and a “Very [...]

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Sudoku difficulty in different newspapers

Sudoku Techniques (Part 5) – Naked Pairs

martinp — Wed, 24 Jun 2009 19:03:30 +0000

Today’s sudoku solving technique came as a revelation to me when I first saw it described. I am aware that I may have been using it unconsciously but it is completely obvious when you see it revealed. So then, one small step to helping you play sudoku more easily. This is called Naked Pairs. In the [...]

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Sudoku Techniques (Part 5) – Naked Pairs

How am I doing?

martinp — Tue, 23 Jun 2009 20:52:58 +0000

A break from the normal frenzied “sudoku solver” programming today. Before I move on to intermediate sudoku techniques, I wondered if you have found the posts useful so far. I realise that for many of you, these will have been fairly basic – maybe with a few insights. I would love to hear your opinions [...]

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How am I doing?

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