You have a large, 9x9 grid that is divided into nine 3x3 squares. The rules of Sudoku puzzles are remarkably simple. Plus, Sudoku can make you feel happy! What more reasons do you need? Keeping an active brain is essential, and this is a great way to achieve that. Amazingly, it also reduces your chances of developing Alzheimers as you grow older. Playing Sudoku can help improve your memory, logic and concentration. Specifically, it trains your brain in the same way that physical exercise trains your muscles. However, it's important to stick with it! Scientific research has shown that there a number of benefits of Sudoku. If you've never played Sudoku, you might find it confusing and difficult at first. However, this board game takes numbers out of the equation altogether, replacing them with bright colors.
#Online color sudoku series#
Now it's time to try the Sudoku color puzzle wooden board game, which uses the same principles - a series of 3x3 grids which, put together, create one large 9x9 square.
#Online color sudoku free#
Free reproductionĪll irregular jigsaw puzzles offered on this site are created by and these puzzles can be reproduced free on condition that a link to the web site appears on every reproduced page.You've probably heard of Sudoku, the popular Japanese game of numbers in boxes that became a worldwide sensation, appearing in newspapers all over the world.
#Online color sudoku pdf#
You can select pdf files in white, gray, hatched or colored. Our irregular jigsaw sudoku are downloadable through the menu 9X9 JIGSAW SUDOKU and the link Download pdf puzzles. You can select prints in white, gray, hatched or colored. Our irregular jigsaw sudoku are printable through the menu 9X9 JIGSAW SUDOKU and the link Print grids. However, the advantage of non-symmetrical puzzles is that, having one less constraint, they allow the elaboration of more difficult problems. Indeed it is the puzzle that is symmetrical and not the solution. This is only esthetic and does not change the resolution mode of the grid. Symmetrical and asymmetrical puzzlesĪn irregular jigsaw puzzle is symmetrical when the squares that compose it are arranged equally around the central square known as the center of symmetry. Number of multiple choices in extreme asymmetrical puzzles :įrom 1 to 19 multiple choices are possible, in proportion with the puzzle number.Įxtreme asymmetrical puzzles with the highest numbers are the most difficult to be solved and just proposed as a "curiosity".įor more details on these techniques similar to those of regular sudoku, see: General help. Number of multiple choices in extreme symmetrical puzzles :
Indeed, the symmetrical ones have an additional constraint - precisely to be symmetrical - so they have fewer empty squares to solve. Choose a random puzzle:Ĭhoice of puzzles: Our irregular sudoku were designed and graded so that at the same level the higher the puzzle number, the more difficult the solution, with this nuance that in our classification, at equal levels and numbers, symmetrical puzzles are a little easier to solve than asymmetrical ones.
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