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 11.11.2018 Online since 18.11.2018 Online since 25.11.2018 Online since 02.12.2018 Online since 09.12.2018
4x4 very easy6x6 easy9x9 easy9x9 medium9x9 hard12x12 hard
This Sudoku has been solved 51 times.
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BTW, our name is Vinckensteiner and not Vinckenstein, Finckensteiner, Finckenstein, Vinkensteiner, Vinkenstein, Finkensteiner or even Finkenstein.