Play Arto Inkala's Hardest Sudoku In The World

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What is the hardest sudoku in the world?

Our full article can be read here The hardest sudoku in the world article.

The world's hardest sudoku is a specific sudoku board that was made by Arto Inkala in 2012 and is considered the hardest solveable sudoku puzzle in the world.

Arto Inkala is a Finnish mathematician who is known for his work in creating difficult sudoku puzzles and has earned a reputation as one of the world's leading sudoku constructors. This difficult sudoku board was designed to challenge even the most experienced sudoku solvers and is considered by many to be the world's most difficult sudoku puzzle.

It requires a high level of logic and deduction skills to solve, and only a few people in the world have been able to complete it.

We recommend you to give it a try, and don't discourage if you couldn't insert even a single number in, after all - it is the hardest sudoku in the world!

What makes the hardest sudoku in the world so hard?

Probably, the most difficult sudoku to solve would be creating one from scratch, as this insane youtube video shows.
Instead, Arto Inkala's sudoku has 21 reveald digits, which is on par with other 'standard' hard suduoks that can be found anywhere. on our online sudoku site as well.

The thing that makes this sudoku so difficult to solve, is the carefully placed digits, that generates a very high amount of contesting digits for each empty cell.
In a nutshell, a Sudoku difficulty is measured by a more than one factor, one of them being the average amount of possible digits per each empty cell. Which requires the solver to use a lot of brain power to figure out which digit is the right one out of all the possibilities.

For more information about how a sudoku difficulty is being measured, you can read our article on how a sudoku difficulty is being measured.
For more intertesting sudoku related content visit our sudoku tips and articles section.
And if you wish to play a sudoku thats a bit more to your experience, visit our sudoku game hompage.