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Puzzle Sudoku

Uses Of Sudoku Puzzles At Home
At first glance sudoku puzzles appear difficult and seem to require advanced math skills to complete; not at all an activity likely to suit kids. However, this assumption is incorrect. Sudoku puzzles are an extremely fascinating and satisfying pastime for kids of all ages.
Kids love sudoku and won't even realize that while they're completing puzzle after puzzle they are actually learning and contributing to their education. All they care about is that they're having fun.
By introducing your kids to sudoku you will be increasing their attention span and ability to focus, introducing them to basic math and logic concepts and increasing their brain power.
Introducing sudoku puzzles into your home may even result in hours and hours of blissful peace and quiet for yourself.
Printable sudoku puzzles for kids are available readily on the internet. Downloadable, printable products really are the quickest and simplest way to get an endless supply of sudoku puzzles for your kids. With paperback sudoku books only one child can be using the book at a time, unless the book is photocopied repeatedly. Printable books of kids sudoku puzzles allow you to print off one or two as required or print the whole lot and have, literally, hours of resources ready-to-go, for all your kids, and their friends as well.
The uses of sudoku puzzles in the home are truly only limited by your imagination. Sudoku puzzles are a great activity to share with your child (especially if you are already a sudoku addict yourself). Kids will have fun completing the puzzles and at the same time you can know that you are actively contributing to your kid's academic development. Best of all, kids will love the chance to spend quality time with mom or dad.
Sudoku puzzles are also a great way to calm down active kids just before bedtime. As sudoku puzzles require immense concentration and thought, you may just find kids mentally burn up all their excess energy whilst finishing a puzzle or two.
Another great activity for kids is to allow them to make their own book of sudoku puzzles. Find age- and difficulty- appropriate puzzles online and print off as many as required. Let children cut out the puzzles and bind them together to make a book. Next get kids to decorate and personalize each puzzle. Name the book "(your child's name) Book Of Sudoku Puzzles." Kids take great pride in their own creations and will be more-than-happy to pull out their book of sudoku puzzles at any time. These books are also a great, inexpensive present children can make for siblings or friends.
Sudoku puzzles are a great way to keep kids occupied when travelling long distances, waiting for an appointment or eating out in a restaurant. Kids often get restless when having to wait or sit still for a long time, so sudoku puzzles are a great way to keep them quiet and happily occupied. Print some off and take them with you wherever you go.
If children are being babysat for the night, leave some sudoku puzzles behind to ensure a hassle-free evening for the babysitter.
As I said earlier, the uses of sudoku puzzles at home truly are unlimited. Be creative and let your kids come up with their own ways of using sudoku puzzles.
About the Author
Brooke Watson uses Sudoku puzzles with kids to help them develop problem
solving skills, logical thinking and creativity while they have fun. She has
created a collection of sudoku number puzzles and word puzzles for children at
How do writers create a sudoku puzzle?
What is the process for making a sudoku puzzle?
Are they reverse engineered, or is there some mathmatical process?
That's a tricky question. The usual process nowadays is for the creator to use a computer. Working in columns left to right, or rows top to bottom, the program fills the first randomly, then the next and so on, keeping the rule of not re-using a digit already used in the rows (or columns) so the 2nd column (or row) has only 8 digits to choose from for each cell. It will select for the top (or left) cell, then move down (or right) with fewer and fewer digits available as they are used in the column (or row).
Once filled out, the computer then removes "X number" of digits to make an easy puzzle, more for a harder one and so on for as hard as one wishes to make them.
GOOD creators now solve each puzzle to ensure there is only one solution for the puzzle after however many digits are removed. There is no elegant way currently used for this: the computer simply uses blunt force to start with the puzzle as it would be published and solving. If it finds only one solution, the puzzle is ready for publication and the beginning display and answer display is saved for publication. At this point, the effort the computer went through to "prove" the solution may modify what category it is put into. Might be, for instance, that an easy looking puzzle with many starting digits is actually a beast to solve.
If in that step, it is found that no umabiguous solution is possible (for instance, maybe it resolves to four cells at the end that could be 7, 1, 2, 5 or they could be 1, 5, 7, 2 which means two solutions exist and people will feel cheated), then the computer will usually loop back and put one more numbered cell into the starting puzzle and try again.
Blunt force, blunt force and more good blunt force. Nothing elegant really, except a step with a check to ensure they are not producing reflections of puzzles because no publisher wants to pay for that when they can do the reflections themselves! (A reflection is a puzzle in which the cells are rotated by 90, 180, or 270 degrees — so that the left column might now be the top row and so on.)
How to Solve Sudoku Puzzles : Forcing Chains Strategy in Sudoku




































































































