seen from United States
seen from Russia
seen from Türkiye
seen from Singapore
seen from United States
seen from China
seen from Russia
seen from United States
seen from Netherlands
seen from Germany
seen from United States
seen from T1
seen from China
seen from Thailand
seen from United States
seen from China
seen from China
seen from United States
seen from United States
seen from United States
De vraag is ook in de Wetenschapsagenda gesteld: Hoeveel cellen moeten in een Sudoku minimaal gegeven worden om hem uniek oplosbaar te maken? Dit artikel uit het januarinummer (2013) van Pythagoras legt uit hoe het antwoord, 17, gevonden is.
