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Sudoku is a puzzle with 9 rows and columns. The rows/columns are divided into 9 3x3 squares (you'll notice the bold lines; those are the things that separate the 3x3 squares.) that are indicated in bold lines. There are many kinds of sudoku. Sudoku was originally called Number Place.

It originated in Japan, hence the name, and was a challenge similar to crossword puzzles, which don't work well with kanji.

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It would depend on the puzzle.

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No, you are supposed to use logic deduction to come up with the answers.

It can seem impossible at times, but a sudoku should always be solvable using logic reasoning.

Though a puzzle SHOULD be solvable using this technique , it is not always possible in more advanced puzzles. The most difficult levels require you to assume that a box is filled with one number or another. You pick one of the numbers, and then, you must follow the puzzle until you either solve it, or come to a impossible situation. Using the logical reasoning of "reductio ad absurdum", you then conclude that the number you picked WASN'T the correct number and start over from that junction point.

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There are 9 rows and 9 columns. There is 81 individual squares in one grid.

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It was invented by Howard Garn, an Indianapolis architect.

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Undoubtedly the logic center. When people become skillful enough to start finishing Sudoku puzzles, they have a markedly improved logical deduction capacity for normal, everyday events. This is tremendously useful in discarding impossible remarks and theories.

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110000000

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Yes, of course Sudoku is copywritten. If it wasn't then people could go and steal it. If you don't believe me, you can go to Google and look it up. ( yes, Google is copywritten too!)

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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.

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For example, have you ever watched TV and someone tried talking to you but you were in a zone? You didnt respond or realize they were talking. These "zombie" like trances are deleted eventually from your behavior if your mind exercises extensively. Sudoku is a stimulating and difficult mind exercise that can be extremely easy to those that just automatically figure the pattern in their mind. Those people are less likely to become "zombies". This takes years and years of dedication and not just with sudoku, but hundreds of thousands of mind boggeling puzzles.

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Don't know

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Real sudoku puzzles require one solution to be complete. Most sudoku websites use an algorithm to create those one solution sudoku puzzles. You just can't fill an empty grid with random numbers because you can end up with multiple solutions.

Here is a list of sudoku websites where you can play online or print sudoku puzzles :

http://www.domo-sudoku.com

http://www.websudoku.com

http://www.sudoku.com

http://www.dailysudoku.co.uk

yes, but (like I was looking for) you cannot print your OWN puzzles!

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Sue-do-ko

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5. There would be the 4 squares inside the grid, but also the one square which is the whole outside of the grid.

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1

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sudokuprintables.org lets you print 2, 4 or 6 puzzles per page...

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It is technically possible, but hard to do.

It also depends on the difficulty - e.g, if it is an easy Sudoku, many of the boxes may already be filled, making it very unlikely, or often impossible.

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don't think about that just play it for fun well maybe you learn to think fast

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To complete the game in Sudoku, each column, square and row must have the numbers 1 to 9. No numbers can be repeated otherwise you can't complete the game.

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because its cool like that!

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Well, there is a pattern to all of them... only one of each number in each column and in each row, and in each of the nine subareas. That's how you figure them out, by evaluating what could go in each square until you have it narrowed down and can be sure that only one number fits in a certain place... then you look for another, because hopefully that new number helped you narrow things down further, etc.

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35 minutes. Is the average time for someone to complete a puzzle Answer #2: If you go to websudoku, easy puzzle, it is considerably under 6 minutes on average. I take 12 and am out on the "fringes" of the distribution curve. Those Japanese are REALLY fast!