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Ask Dr. Sudoku #7 – Twisted Geometries

There is no Doctor’s Note this week.Seventh in a series with puzzle solving tips. This time with advice on exploring unusual puzzle geometries such as the Saturday Sudo-Kurve.When you’ve solved enough...

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Ask Dr. Sudoku #8 – No Subbing

Eighth in a series with puzzle solving tips. This time with advice on battleships puzzles, particularly missing clues and subs.Solving Battleships is an odd experience for me. I think I want to enjoy...

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Ask Dr. Sudoku #9 – No Time to Close the Loop

Ninth in a series with puzzle solving tips. This time with advice on Slitherlink and loop puzzles in general.Even if you had a good time on the TIME Slitherlink, the following walk-through might offer...

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Ask Dr. Sudoku #10 – The Known Unknowns

Tenth in a series with puzzle solving tips. This time with advice on Fillomino puzzles and hidden polyominoes.Fillomino is one of my favorite puzzle styles, in part because it is one of the few where I...

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Ask Dr. Sudoku #12 – The line must be drawn here

To [guess], or not to [guess], that is the question:Whether ’tis Nobler in the mind to sufferThe [Twists] and [the Turns] of outrageous [Logic],Or to take Arms against a Sea of troubles,And by...

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Ask Dr. Sudoku #13 – Puzzle Hunting

A few weeks ago Giovanni P. asked what our visitors might think about “other puzzles.” His question was specific to word puzzles, but this week I put the question to the test when I posted our first...

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Ask Dr. Sudoku #14 – Thinking in Groups

I knew when constructing puzzles for this past week that it would end up pretty tough across the board. I had certain themes in mind and when constructing for a particular goal you cannot always tailor...

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More Solving Tips and Tricks

The “Ask Dr. Sudoku” series is on indefinite hiatus. If you want to know how to solve our puzzles better, including tips on notations and good heuristics, we encourage you to become a patron of the...

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Ask Dr. Sudoku #11 – About that hidden contest…?

For the last couple weeks Sunday has been a day where we’ve seen a huge increase in page views, strictly because a new hint was released for the site’s first Hidden Contest. This led a few dedicated...

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Ask Dr. Sudoku #16 – V for Victory?

Q: Are you going to write about your experiences in Prague this year? Did you expect you would ever win the World Puzzle Championship? Several people have asked if I would write a report on my...

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Ask Dr. Sudoku #17: Thoughts on digital solving options and puzz.link

While I am mainly a pencil-and-paper puzzle solver, I always thought GMPuzzles would eventually find some digital outlets. Not necessarily one outlet — our different styles have different needs and a...

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