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What is the most difficult Sudoku in the world?

A Finnish mathematician claims to have designed the world's most difficult Sudoku. The numerical puzzle took Arto Inkala three months to design, and it has only one solution - one that only the sharpest minds will discover, he told the Daily Telegraph.
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What is the hardest Sudoku of all time?

The puzzle is called the Miracle Sudoku and it's made by fellow puzzle legend Mitchell Lee. And here are the special rules: “Any two cells separated by a knight's move or a king's move (in chess) cannot contain the same digit. Any two orthogonally adjacent cells cannot contain consecutive digits.”
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Is Sudoku high IQ?

From this case study it can be concluded that an individual who is skilled at solving Sudoku puzzles likely has a high general IQ. The results of the weak correlation between Sudoku scores and the WAIT test indicates that in some cases a high Sudoku doesn't necessarily mean a high general IQ.
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What is harder than Sudoku?

— cross sums puzzles, with complete solutions. Like sudoku, kakuro is a cross sums puzzle that requires logic and patience to crack the grid. But, unlike sudoku, kakuro incorporates filled and empty cells similar to a crossword puzzle for a more challenging, more exciting, brain-twisting experience.
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What is the biggest Sudoku in the world?

Description. Are regular sudokus starting to seem too easy? At 21 feet, 9 ¾ inches long, and with 8,929 empty squares to fill, this huge puzzle adds big excitement to the popular game. It's comprised of 167 regular-sized (9x9) sudoku puzzles, linked together at 3x3 corners.
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The Hardest Sudoku... And How To Solve It

What is the fastest easy Sudoku ever recorded?

The Guinness World Record for the fastest solve of a 'Very Easy' level Sudoku is held by American player Thomas Snyder. He completed the puzzle in a blazing 1 minute and 23.93 seconds!
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What is the most addictive puzzle since Sudoku?

Invented by Japanese mathematics teacher Tetsuya Miyamoto in 2004, KenKen is an elegant and rich logic puzzle with a few easy-to-understand rules, which helps explain why New York Times Puzzle Editor Will Shortz called it “The most addictive puzzle since Sudoku.”
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Is Sudoku good for the brain?

Sudoku keeps your brain active and reduces the risk of Alzheimer's, a most common cause of dementia that affects a person's thinking and behavioural skills. Stimulates your mind: The game works on your logical thinking process as you are absorbed in solving a puzzle and eventually improve your number skills.
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Are there Sudoku puzzles that Cannot be solved?

Realistically, no! There are 6,670,903,752,021,072,936,960 possible solvable Sudoku grids that yield a unique result (that's 6 sextillion, 670 quintillion, 903 quadrillion, 752 trillion, 21 billion, 72 million, 936 thousand, 960 in case you were wondering). That's way more than the number of stars in the universe.
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Is Sudoku good or bad for your brain?

People who regularly engage in playing Sudoku may be able to delay mental decline. Coupled with logic games, crossword puzzles, and other similar games, Sudoku players stretch their minds through deductive reasoning and other cognitive skills.
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What does it mean if I'm good at Sudoku?

The best Sudoku players know how to cut through the visual clutter of a Sudoku grid and start scanning immediately for the most valuable clues and information that they need – they know how to apply a process to the Sudoku grid where they can see which places are the most promising.
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What is the average time to solve a Sudoku?

It is believed that the average Sudoku player spends approximately 20 minutes solving a typical Sudoku puzzle. For very hard puzzles, that number can be much higher. While the game itself can be challenging and complex, several strategies can be used successfully to find the solution.
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What is the trick to solving hard Sudoku?

How to Solve Hard Sudoku Puzzles
  1. 1 Use a pencil.
  2. 2 Note potential candidates in open squares.
  3. 3 Scan the board to process the puzzle.
  4. 4 Start with the obvious singles.
  5. 5 Revisit your candidates after you solve singles.
  6. 6 Identify naked or hidden pairs.
  7. 7 Move on to triples and quads.
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What is the least clues in Sudoku?

Sudoku fanatics have long claimed that the smallest number of starting clues a puzzle can contain is 17. Now a year-long calculation proves there are no 16-clue puzzles. Sudoku is a number puzzle consisting of a 9 x 9 grid in which some cells contain clues in the form of digits from 1 to 9.
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Is there 0 in Sudoku?

The cool thing about this enigma is that only two possible answers can fill each blank: zero and one—and each grid has a sole solution.
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What is the fewest clues in Sudoku?

The fewest clues required for a proper Sudoku is 17, but not all completed grids can be reduced to a proper 17 clue Sudoku. About 49,000 unique (non-equivalent) Sudokus with 17 clues have been found. (A proper Sudoku has only one solution).
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What is the 45 rule in Sudoku?

The 45 rule is a basic solving-technique in Killer Sudoku. Each house (row, column, nonet) must add to 45 (the sum of the digits 1 through 9).
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Can you win Sudoku without guessing?

Can all Sudoku puzzles be solved without guessing? According to Sudoku Of The Day, “Sudoku is a puzzle involving logic—no arithmetic or guessing is required!” While you can, guess, of course, if your guess is wrong, it will throw off the rest of the puzzle and you'll need to start over.
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What is an evil Sudoku puzzle?

What is Sudoku Evil? Sudoku evil is a 9×9 grid sudoku puzzle with the highest possible level of difficulty. It's an advanced level only for experienced sudoku solvers.
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Does Sudoku reduce dementia?

“Just sitting down and doing Sudoku isn't probably going to be the one key thing that's going to prevent you from developing Alzheimer's disease,” she said. Moreover, doing only one type of puzzle or another is not the key either. The brain needs to be exercised, just like any other muscle in the body.
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What is the smartest way to play Sudoku?

5 Best Tips for Playing Sudoku
  1. Look for the Easy Solutions. Many puzzles will leave one or two blanks either in a line or in a box. ...
  2. Seek the Missing Numbers. ...
  3. Keep Scanning the Entire Puzzle. ...
  4. Constantly Re-Evaluate the Grid. ...
  5. Be Patient and Enjoy the Hunt.
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What was Sudoku originally called?

Originally, Sudoku was called "Suji-wa-Dokushin-ni-Kagiru," which translates to, "Numbers should be single, a bachelor." In recent years, Sudoku, believed to be the world's most popular pencil puzzle, has come out in digital versions.
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What is the most sold puzzle of all time?

In 1974, Hungarian architect Ernő Rubik created his eponymous Cube as a teaching tool for his students. His students loved playing with the Cube which inspired him to make it more widely available. Forty years on, the Cube has sold 350 million copies making it the most popular puzzle of all time.
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How many Sudoku puzzles should I do a day?

Make an effort to complete at least one sudoku puzzle a day and you might see your improved reasoning skills transfer to your job and other problems you come across with in your everyday life.
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