lerxst wrote:If that's of any help, the "hardest" ones for my database query are puzzles with empty rows and/or empty columns. So if you have a puzzle with a few empty rows AND a few empty columns, that would be terrific. To be precise, columns and rows with less that 2 clues force the optimizer to do a partial match in the index...
...
Do you guys have such puzzles in your databases ?!? I'd be interested by those if you have some!
Here are some from this thread
- Code: Select all
..........256..4.......438..942..1.............3..189..627.......1..897..........
..........352..6.......784..946..5.............3..418..627.......1..897..........
..........251..4.......738..142..5.............3..589..627.......1..897..........
..........952..4.......738..249..5.............3..186..627.......1..897..........
..........952..4.......738..549..2.............3..186..627.......1..897..........
..........954..7.......234..749..1.............3..582..627.......1..897..........
............6.514....4.732..51...46...........83...21..675.8....127.6............
..........219..7.......485..172..9.............3..864..457.......9..513..........
and the one by Rico Alan (in wikipedia Mathematics_of_Sudoku):
- Code: Select all
14.93....93.1.......................56......489.....27............25..18...74..32
