on page 1, Ruud wrote:I have tested the creation of puzzles with this diagonal pattern. The percentage of difficult puzzles is much higher than average.
[...]
I also have a collection of 3418 non-minimized puzzles with this pattern:
- Code: Select all
X . .|X . .|X . .
. X .|. X .|. X .
. . X|. . X|. . X
-----+-----+-----
X . .|X . .|X . .
. X .|. X .|. X .
. . X|. . X|. . X
-----+-----+-----
X . .|X . .|X . .
. X .|. X .|. X .
. . X|. . X|. . X
If anyone would like to check them, drop me an email and I will send them to you. My email is ruud@(my website)
Ruud, if you're still watching this topic, I'd like to try SudoRules on this collection.
Does anyone else know if and how Ruud can now be contacted (apparently, PMs no longer work). Or is anyone in possession of a copy this collection?