For children and beginners we have smaller sizes like 4x4 or 6x6, but even skilled experts will be challenged by our hard and oversized ones.
Online since 20.05.2018 Online since 27.05.2018 Online since 03.06.2018 Online since 10.06.2018 Online since 17.06.2018
4x4 very easy6x6 easy9x9 easy9x9 medium9x9 hard12x12 hard
This Sudoku has been solved 56 times.
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BTW, our name is Vinckensteiner and not Vinckenstein, Finckensteiner, Finckenstein, Vinkensteiner, Vinkenstein, Finkensteiner or even Finkenstein.