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I certainly wouldn't recommend this for casual puzzle makers. It is incredibly tedious. Start with filling in a grid in such a way as to have the finished Sudoku result of only 1 instance of each number in a row, column and box. Double check your work carefully, as a mistake at this point will invalidate the entire puzzle! Start anywhere you like, and delete ONE number. Using "reverse Sudoku logic", erase another number that can be proven to be the only number that could go in the square that you erase. Keep erasing numbers that you can "provably show to be the only number that could go in the square given the 'current' state of the board AFTER you erase the number". When you can't figure out a way to erase any more numbers (not enough clues to force a move), you are done!

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16y ago

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Is there a site on the internet to view Free sudoku puzzles?

There are several places where one can play sudoku online. Some interactive online sudoku websites include Web Sudoku, Sudoku Saviour, and You Play. Sudoku puzzles can also be printed out and completed by hand, and these types of puzzles can also be found on these websites.


Can all sudoku be solved without guessing?

No. 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. It is VERY discouraging to have to resort to that technique, so I always play the ones that you can logically solve all the way whenever possible. If there was an easy way to mark a board and erase the wrong entries, then it wouldn't be so bad. Perhaps I could use a dry erase board with a different color when I got to a junction. That way, all I'd have to do is erase all the guesses in that color. There is another situation where you are forced to resort to guessing. Not all of the people who make Sudoku puzzles are aware that you must check your new puzzle for conformity to rules of what exactly makes a Sudoku puzzle. As a result, there are an amazing number of producers of puzzles that simply have no clue that what they are producing are not at all Sudoku puzzles, but something that only looks EXACTLY LIKE a Sudoku puzzle. These supposed "Sudoku puzzles" have not one, but anywhere from 2 to hundreds of solutions. Naturally, it is not possible to solve such a "puzzle" with only logic, as logic will fail to reduce the number of choices down to only 1 solution, a necessary component of actual Sudoku puzzles. You can check online at many websites to determine whether or not the puzzle you are working on is an actual Sudoku puzzle or not. It might just save your sanity! The number of erroneous Sudoku puzzles being published out there is legion! I have a hand held game device made in China that produces almost NO useful Sudoku puzzles. My mother got it for me. Thanks, Mom! Great present! *Note to readers: Beware bargain basement clearance bins. The merchandise is in there for a reason, and sometimes, that reason is because the product in the bin doesn't do anything useful, besides take your money. There is a famous hedge in Japan, where the vegetation was planted to produce a Sudoku puzzle. You would think that people that go to that much trouble (manufacturing and planting) would also check to make sure that they produced a useful puzzle so that their efforts would not turn out to be totally wasted, but you would be mistaken. So, don't assume that just because you are looking at a grid of what appears to be a Sudoku puzzle, that it really is one. I only get my puzzles from trusted authors now, and I haven't run in to a non-working Sudoku puzzle for months... I suggest that you start keeping track of who does a good job for you, and then only go to those places for your puzzles.


What kinds of puzzles are offered for sale by the Melissa and Doug company?

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To learn hand engraving on wood and create intricate designs, you can start by practicing with basic tools like chisels and gouges. Study different engraving techniques and patterns, and experiment with different types of wood to see how they respond to engraving. Consider taking a class or workshop to learn from experienced engravers, and practice regularly to improve your skills. Patience and attention to detail are key to mastering the art of hand engraving on wood.


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Are hink pinks figurative language?

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What are the best puzzles for 5-year-olds to help develop their cognitive skills and problem-solving abilities?

Puzzles with larger pieces and simple designs, like jigsaw puzzles or shape sorting puzzles, are great for 5-year-olds to develop cognitive skills and problem-solving abilities. These puzzles can help improve their spatial awareness, hand-eye coordination, and critical thinking skills.