OT: @Sudoku Enthusiasts - Do you know a source for OPEN SOURCE licensed SANDWICH SUDOUS?

[PMario]

Hi Folks,

As the title says. Does anyone have a good source for properly licensed "Sandwich Sudokus"?

I'm especially interested in an javascript algorithm to CREATE and solve them.

I did already find a good standard sudoku creation algorithm. It also lets you adjust the difficulty. So they are not trivial anymore.

It could also produce sandwich sudoku. ... BUT it creates many 0 border elements, which means 9 and 1 are neighbours. And you really need to solve them, to see if they are interesting to play. :/

have fun!

mario