What are the rules of circle sudoku?
It depends on the version of the puzzle being played.
Usually the aim is to place the numbers from 1 - n into each of the concentric circles in the puzzle, and also in each of the 'spokes' that the puzzles are split into. Sometimes a third region is included and in this case, then that information is also required to help solve the puzzle.
Sometimes the puzzles are a little more interesting and have a rule of non-adjacency in them, saying that a number may not have consecutive value to the cells around it.
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