Ten Box
Solve online in Penpa+ (thx bbutrosghali!)
Place the digits from 1 to 9 in every row, column and 3x3-block. Some 3x3-blocks wrap around the edges of the grid, from left to right or from top to bottom.
Solution code: Row 2, followed by column 2. Ignore black cells.
on 14. July 2022, 11:38 by Richard
Added link and tag for online solving. Thx bbutrosghali!
on 28. March 2021, 12:18 by bbutrosghali
Penpa implementation:
https://git.io/JYZFJ
on 5. September 2017, 06:12 by Richard
@Jonas: I only read your first thought, which is a wrong conclusion.
on 10. November 2016, 14:51 by ohm0123
I not written numbers, I not solved. I written numbers, l solved. Good.
on 13. October 2015, 20:00 by ildiko
Ich lasse mich gerne durch Kommentare inspirieren, auch mal alte Rätsel anzusehen. Die Reihe hatte ich noch nicht "entdeckt". Sieht interessant aus. Da weiß ich ja schon, was mich bis nächsten Dienstag beschäftigt.
on 29. September 2015, 09:09 by Statistica
Großartig. Erinnert mich ein wenig an die tollen Rätsel aus der "Big bang theory"-Reihe von Fred76.