All the rules to regular sudoku apply as well as each number in each "cage" (the boxes with dotted lines) must be unique and add up to the number inside the cage.
Sudoku Susser is a great tool for solving 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.
Traditionally Sudoku puzzles are 10 x 10 grids. These puzzles can be found in most broadsheet newspapers, in varying degrees of difficulty. Books of Sudoku can also be purchased from retailers such as Amazon.
I love those things! :)Here are some cool sites:enchantedlearningallstarpuzzleslogic-puzzlesI should do some more of those problems myself...
Sudoku
I play puzzles online. My favorite is to solve crosswords because it challenges my mental skills. I play online at freedailycrosswords.com . Puzzles are free and can be easily printed out. There are also other games available such as Cryptogram and Sudoku.
There is great variability in the difficulty of Sudoku puzzles. Some can be very easy once you learn some simple techniques for solving them. Other puzzles can be extremely difficult!
not sudoku but TANGRAMS
On pre-made sudoku puzzles, the patterns created by the numbers already filled in, are symetrical. If the pattern is not symetrical, then the puzzle cannot be completed successfully
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!
Sudoku and crossword puzzles
The contestants solve the puzzles.