How do you print Sudoku? To print the Sudoku puzzle, click the Menu icon in the upper right hand corner. Then select Print from the dropdown Menu.

To print the Sudoku puzzle, click the Menu icon in the upper right hand corner.Then select Print from the dropdown Menu.

What is the best Sudoku website?

1. Sudoku.com. Available online and as an Android and iOS app, Sudoku.com is an awesome website for Sudoku fans. The website features events to take part in, awards to win, and helpful tips and rules about the game.

What does R and C mean in Sudoku?

A single cell is called out by specifying its row and column numbers with an ‘r’ preceding the row number and a ‘c’ preceding the column number. Examples: r1c9 means the cell in row one and column nine (the rightmost cell on the top row).

How many 9×9 Sudoku combinations are there?

They discovered that the number of possible 9 by 9 Sudoku grids is N=6670903752021072936960 which is approximately 6.671×10^{21}.

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).

Can 1 Sudoku have 2 solutions?

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. There are examples of rank-3 Sudoku puzzles with 17 givens that are well-formed.

How many Sudoku combinations exist?

There are exactly 6, 670, 903, 752, 021, 072, 936, 960 possible solutions to Sudoku (about 10^21) . That’s far more than can be checked in a reasonable period of time. But as luck would have it, it’s not necessary to check them all. Various symmetry arguments prove that many of these grids are equivalent.

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.

Is Sudoku always 9×9?

The given board contains only digits 1–9 and the character ‘. ‘ . You may assume that the given Sudoku puzzle will have a unique solution. The given board size is always 9×9.

Is 9×9 Sudoku NP complete?

Sudoku is NP-complete when generalized to a n × n grid however a standard 9 × 9 Sudoku is not NP- complete.

What is the magic number in Sudoku?

They fed in thousands of completed grids to see if that would deliver but it only showed that no grid had been solved with fewer than 17 starting clues. The problem was this did not prove that 17 was a minimum, only that no solved grid had yet been found with less than 17.

What is the average time to complete a Sudoku puzzle?

It can be incredibly challenging to solve a Sudoku puzzle. That’s what makes it fun. 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.