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Frog-In-A-Well^TM is a form of Round Sudoku (sometimes called Target Sudoku or Circular Sudoku). Traditional Round Sudoku usually has 5 rings and involves 10 numbers. Frog-In-A-Well^TM is for younger players and contains only 4 rings and involves 8 numbers. This puzzle has more exposed numbers than traditional Round Sudoku, but a bit more concentration is required to solve it. If you are interested in the traditional Round Sudoku puzzles, please go to: www.RoundSudoku.com.
(Also, see sample puzzle below!)

Rules: Each ring (there are 4) must contain 8 numbers from 1 to 8. Each wedge of the well (there are 8) plus its opposite wedge must also contain 8 numbers from 1 to 8.

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Round Sudoku^TM, sometimes called Target Sudoku or Circular Sudoku, has certain similarities to the traditional 9X9 grid; but when you try to solve it, you will find that it has a completely different dynamics of its own! More concentration is needed here.
At first, Round Sudoku^TM might seem more difficult than traditional Sudoku. But after a little practice, you will find that it is actually slightly easier and quicker to solve! There are simply less numbers to uncover.
The circular puzzle format was first developed in 2005 at the University of Essex, England.
Rules: Each ring (there are 5) must contain 10 numbers from 0 to 9. Each wedge of the puzzle (there are 10) plus its adjacent wedge must also contain 10 numbers from 0 to 9.
Go to RoundSudoku.com, click here.

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