Sudoku Game – The Most Challenging Puzzle Of All Time
There are usually four or five rating levels in most publications of the Sudoku Game. However, these levels often vary in difficulty from one publication to another. So, a level 2 in one publication may be an equivalent to a level 4 somewhere else. It is not the quantity of numerals in the game that determines the difficulty ratings; rather it is based on the position and relevance of the ‘givens’. Online versions often use computer solvers to estimate the difficulty and levels online can be less in quantity than in publications.
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