Sudoku

Sudoku, also known as Number Place or Nanpure, is a logic-based placement puzzle. The object is to fill the grid so that every column, every row and every 3?3 box contains the digits 1 to 9. The puzzle setter provides a partially completed grid so that there is only one solution. Completed Sudoku puzzles are a type of Latin square, with an additional constraint on the contents of individual regions. Leonhard Euler is sometimes (incorrectly) cited as the source of the puzzle, based on his work with Latin squares. The modern puzzle was invented by an American, Howard Garns, in 1979 and published by Dell Magazines under the name "Number Place". It became popular in Japan in 1986, when it was published by Nikoli and given the name Sudoku. It became an international hit in 2005.

Sudoku, sometimes spelled Su Doku, is a placement puzzle, also known as Number Place in the United States. The aim of the puzzle is to enter a numeral from 1 through 9 in each cell of a grid, most frequently a 9?9 grid made up of 3?3 subgrids (called "regions"), starting with various numerals given in some cells (the "givens"). Each row, column and region must contain only one instance of each numeral. Completing the puzzle requires patience and logical ability. Its grid layout is reminiscent of other newspaper puzzles like crosswords and chess problems. The puzzle initially became popular in Japan in 1986 and attained international popularity in 2005. The word Sudoku means "numbers singly" in Japanese. The numerals in Sudoku puzzles are used for convenience; arithmetic relationships between numerals are absolutely irrelevant. Any set of distinct symbols will do; letters, shapes, or colours may be used without altering the rules.
The attraction of the puzzle is that the completion rules are simple, yet the line of reasoning required to reach the completion may be difficult. It is recommended by some teachers as an exercise in logical reasoning. The level of difficulty of the puzzles can be selected to suit the audience. The puzzles are often available free from published sources and also may be custom-generated using software.

Play sudoku with monster icons instead of numbers for an increased challenge.

you will travel in a number maze. The aim of the game is to fill in the puzzle so that every row, every column, and every 3X3 box contains the numbers 1 through 9. You can first choose Level of Difficulty from Easy, Medium, Hard and Very Hard. Try to finish this puzzle as soon as possible. When you feel hard to go on, you can ask for 3 times of hints. If you fill in a wrong number, you can undo your step. If you think it is awful to go on, you can redo it. But when you are unable to solve the puzzle, you can press the button ?Solve It? to see the right answer. The game board consists of 81 panes. Some are blank and some have been filled. It?s your duty to make it perfect. You are a Math Talent here. Do it now.

Try one of the absolute best sodoku games ever--for real fans only!

How to play:
Use the mouse to play this game.

A colorful twist on classic Sudoku�

How to play:
Fill in the board so that each row, column, and box of 4 blocks features each of the four colors exactly once.

Dozens of challenges for every skill level await in this extreme version of Sudoku!

How to play:
Choose a level and game, then click the square and select the number you would like to enter, or X to clear the cell. When hints are turned on, incorrect cells will appear gray.

Sudoku-style gameplay takes a vacation from Squaresville.

How to play:
Fill every triangle block, the three outside borders, and the borders of the inner triangle with the numbers 1-9 by clicking an open spot until the right number appears.