http://sudoku.koalog.com
Our servicesSudokus creation |

We create original Sudokus for websites, newspapers and books.
Each Sudoku comes with its unique solution, a difficulty level and, if
required, a human understandable explanation.
Note that we can create smaller Sudokus (4x4), bigger ones
(16x16, 25x25, ...) and
Sudokus with additional constraints or patterns.
Delivery
We deliver our Sudokus electronically in various
formats (PDF, EPS, GIF and many others), depending on your needs.
References
See our references list
and contact us for a quote.
About our SudokusUnicity of solutionWe guarantee that each Sudoku has a unique solution.
Difficulty levelsWe rank our Sudokus with 6 levels of difficulty depending on the complexity of
the rules needed to solve them, the last level may require trial-and-error.
Minimal indicationsUnlike other Sudokus providers, we guarantee that it is not possible to reduce
the set of indications (aka givens) while maintaining the unicity of
the solution.
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