The New Sudoku Players' Forum

[jerickallan]

Hi Guys, I'm Jerick. I developed an online sudoku game. There are 3 levels Easy, Normal and Impossible. Until now no one can solve the Impossible level. I'm challenging you guys to solve the impossible level.

[jerickallan]

Until now no one ca solve Impossible level in this website:
http://www.goplaysudoku.com

[jerickallan]

GoPlaySudoku.com is a good website to play with. It has 3 levels. Easy, Normal and Impossible. Easy level is a good level to practice because it will highlight the wrong answers by red after you submitted it. Normal and Impossible levels don't tell you the wrong items. I just checked it and until now no one can solve the Impossible level.

[JasonLion]

I tried one of your "impossible" puzzles

Code: Select all

42................3..8.42.59....6.3....1......3...79..81..........71..89......5..

and it had multiple solutions.

[jerickallan]

Please play in there. If you finished it you can put yoyour name there in the high score list.

[pjb]

I have to agree with Jason: according to my sudoku program that puzzle has 195153 solutions!!
I checked another in case it was a one-off:

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6.1.....44..8...5....6......19.34......5............481......7......34...7.4....5

and this one has 51276 solutions.
The property of uniqueness must be satisfied. I think you need to go back to the drawing board.
Phil

[m_b_metcalf]

The easy puzzle below has only one solution, which is good, but 29 of its 36 clues are individually redundant: the puzzle is not minimal. A version that is still easy but minimal is

Code: Select all

.....75..5..1...94.62.3......43...572.8..6......5..1...3.86...1.8................

Regards,

Mike Metcalf

Code: Select all

.....75..57.1...94.62.357....43...572.8..6.4...754.1...3586..21.8.2..4....6..1.7.


  1 6  is redundant
  1 7  is redundant
  2 1  is redundant
  2 2  is redundant
  2 4  is redundant
  2 9  is redundant
  3 6  is redundant
  3 7  is redundant
  4 4  is redundant
  4 8  is redundant
  4 9  is redundant
  5 1  is redundant
  5 3  is redundant
  5 6  is redundant
  5 8  is redundant
  6 3  is redundant
  6 4  is redundant
  6 5  is redundant
  7 2  is redundant
  7 3  is redundant
  7 5  is redundant
  7 8  is redundant
  7 9  is redundant
  8 2  is redundant
  8 4  is redundant
  8 7  is redundant
  9 3  is redundant
  9 6  is redundant
  9 8  is redundant

[Smythe Dakota]

I tried one of your "impossible" puzzles .... and it had multiple solutions.

That's why it's called "impossible".



Bill Smythe

[denis_berthier]

Hi Bill,
Nice to see you still here.
Are you still doing Kakuros or Slitherlinks? Have you found any interesting new ones?