How many different Sudoku variations are there?

How many different Sudoku variations are there?

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

What are different types of Sudoku?

Sudoku types and classes

• Sub Doku – Grids smaller than 9×9.
• Super Doku – Grids larger than 9×9.
• Prime Doku – N×N grid where N is prime.
• Maximum Su Doku – The class of puzzles which have the maximum number of independent clues needed to allow a complete and unique solution.

What happens if we play Sudoku daily?

Sudoku is a game that rewards many hours of repetitive practice. If you play Sudoku daily, you will start to discover that you have almost a sort of “sense memory” for the puzzle grid – you will start to see patterns emerging and develop the ability to seize opportunities more quickly.

Are there different ways to solve Sudoku?

Sudoku techniques

• Scanning in one direction:
• Scanning in two directions:
• Searching for Single Candidates:
• Eliminating numbers from rows, columns and boxes:
• Searching for missing numbers in rows and columns:
• Eliminating squares using Naked Pairs in a box:
• Eliminating squares using Naked Pairs in rows and columns:

What do GREY boxes in Sudoku mean?

The squares highlighted in grey are the important ones. In the sixth column, we have two spaces where we could either place a two or a nine. Note that we can only place a two or a nine in the two the highlighted squares. Therefore one of these squares must be a 2 and the other must be a 9.

Does Sudoku improve brain?

Sudoku or Crosswords May Help Keep Your Brain 10 Years Younger. New research finds that solving puzzles may help you stay “sharp.” A new study adds more evidence that puzzles can be effective for brain health. On short-term memory tests, puzzle takers had brain function equivalent to eight years younger.

What are the kinds of Sudoku?

Sudoku types and classes Sub Doku – Grids smaller than 9×9. Super Doku – Grids larger than 9×9. Prime Doku – N × N grid where N is prime. Maximum Su Doku – The class of puzzles which have the maximum number of independent clues needed to allow a complete and unique solution.

What are some puzzles similar to Sudoku?

Jigsaw Sudoku Puzzles. Jigsaw Sudokus (also known as Irregular, Nonomino, or Geometric Sudoku) are very similar to regular Sudoku puzzles, but instead of 3×3 blocks, they are divided into irregular jigsaw-like shapes.

Do Sudoku puzzles have unique solutions?

Some More Interesting Facts. A well-formed Sudoku puzzle is one that has a unique solution. A Sudoku puzzle can have more than one solution, but in this case the kind of logical reasoning we described while discussing solving strategies may fall short.

What are the rules for sudoku?

The Rules of Sudoku. The classic Sudoku game involves a grid of 81 squares. The grid is divided into nine blocks, each containing nine squares. The rules of the game are simple: each of the nine blocks has to contain all the numbers 1-9 within its squares. Each number can only appear once in a row, column or box.