want total answer possible of different sudoku 9 x 9 total amount only

SUDOKU or Single Number, is a Japanese number puzzle that has swept through the world with the same gusto as the Rubiks Cube. Newspapers carry it, software houses, toyshops and bookshops sell a great deal of it. There is even a world championships. In the basic form it is a nine-by-nine grid divided into nine (sub-set) squares of nine squares. Numbers between one and nine are strategically placed by the compiler and the player is invited to fill in the rest. The rules are very simple, the game is incredibly addictive. Fill in all the squares with one number each of one to nine. There are to be no repeated numbers in any vertical or horizontal line nor a repeated number in any sub set (square) of nine squares. How hard can it be? Common variations of Sudoku are 8x8, 12x12 and 16x16 squares. Letters or shapes can be substituted for numbers. Other Japanese number puzzles include Kakuro, Kokonotsu, Kikagaku, Samu.

Kakoru or kakuru is a cross between sudoku and crossnumbers puzzles. There's also "killer sudoku" which is just a larger grid size (12x12 or 16x16.)

Most countries with access to the internet have free online sudoku games. If for some reason the site you most enjoy is blocked in your country it can still be accessed by using an internet proxy server that sets your IP address to a different country.

There is great variability in the difficulty of Sudoku puzzles. Some can be very easy once you learn some simple techniques for solving them. Other puzzles can be extremely difficult!

You need an issue number to solve this.

Sudoku puzzles so popular with students because they give your brain a workout. They like puzzles to train their brain and finding the blocks for the numbers is a fun challenge.

You need to fill every row, column, and 3x3 box with the numbers 1-9 without repeating.

Sudoku does not have any addition. You just have to make sure that each row, column and 'sub square' has each of the nine digits (1-9) only once.

6,670,903,752,021,072,936,960 , or 6.67*10^21.

The numbers 1-9 have to be in each bix, row and column. So if you have one with 8 numbers, you can work out the last one. And you can see where a number goes in a box if it's in that row or column, you can't put it in that row or column in the box.

There is only one way to correctly fill a sudoku.

Lovers of sudoku can visit the BrainBashers website where they can find daily sudoku games. Billions of free sudoku can also be found on Websudoku. This is unlimited and can be played on all devices such as android or Ipad.

The main rules of the number game Sudoku is the have one of every number in each line up , down and in each block. You can not have the same of any number in the same area on the board.

The puzzle known as "Al Escargot" (the snail) is currently considered the hardest Sudoku puzzle. It was created by a Finnish mathematician called Arto Inkala.

One of the hardest Sudoku books available is "Extreme Sudoku" by Antoine Alary, not to be confused with "X-TREME Sudoku" by Nikoli & Co. or "Sudoku Xtreme" by Christopher Monckton, which are both an order of magnitude easier.

Any given Sudoku puzzle has just one solution. This is so long as the puzzle already comes with at least 17 digits already placed on the grid. If there are any less than 17 digits, then the puzzle has more than one possible solution, and therefore cannot be solved properly. The total number of possible combinations of digits on a standard sudoku grid is 6,670,903,752,021,072,936,960. However it can be argued that many of these combinations could be the same as another, only backwards or rotated. Factoring out all logical duplicates, the number of possible combinations drops to 3,359,232. This is essentially the total number of possible sudoku puzzles. * My Friend Dev Oneal has completed an 'Impossible Level' Sudoku puzzle, as I checked the answer given by the "Auto-Solve" feature and compare with his solution and have found both was correct but with different pattern. Hence, it could have more than 1 correct answer.

Soduku Cubes are available for purchase on most online retailers, with Amazon and Ebay being among the most popular and price competitive. Soduku cubes are rising in popularity across the United States.

All the rules to regular sudoku apply as well as each number in each "cage" (the boxes with dotted lines) must be unique and add up to the number inside the cage.

One very popular math game is Sudoku, a game where you have to fill in a square with numbers without repeating any. In addition to that, there are a great many math games online which require the rapid solving of simple math problems, word problems, and more.