These hard puzzles may seem ‘unsolvable’ to all but the committed Sudoku expert. We sometimes receive puzzles that our users consider ‘unsolvable’, but with a bit of study they can usually be solved.

Are some Sudokus unsolvable?

These hard puzzles may seem ‘unsolvable’ to all but the committed Sudoku expert. We sometimes receive puzzles that our users consider ‘unsolvable’, but with a bit of study they can usually be solved.

How many solved Sudokus are there?

6,670,903,752,021,072,936,960 possible
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.

Can Sudokus have multiple answers?

The short answer is no. While people commonly think that Sudokus can only have one unique solution, any puzzle with seven or fewer starting clues must mathematically have multiple solutions. This is because in these Sudoku puzzles there cannot be a clue for every digit from 1 to 9 in the initial clue.

What is the formula for Sudoku?

For the second Sudoku, we have the following 10 equations: m+n=a. g+n+f=g+c⟹n+f=c. g+d=n….Sudoku 2.

Letter Number
e 8
f 2
g 3
m 5

What is the trick to solve Sudoku fast?

Focus on a single row, column, or square Slowly work your way up until you fill up all 81 spaces. You can start with a single square, then a row, then a column. Getting rid of all other distractions will help you solve the Sudoku grid much faster.

What is the highest number used in a standard Sudoku puzzle?

Since this applies to Latin squares in general, most variants of Sudoku have the same maximum. The number of classic 9×9 Sudoku solution grids is 6,670,903,752,021,072,936,960 (sequence A107739 in the OEIS), or around 6.67×1021.

Do Sudokus make you smarter?

Sudoku is one game, like crossword puzzles and riddles, that increase neuroplasticity and make your smarter. With increased neuroplasticity, you are better able to view something from multiple angles and anticipate and understand new patterns.