Musical chairs
(Published on 4. April 2025, 14:50 by chameleon)
Some time ago, I Love Sleeping posted this sudoku grid
in the "no solutions" Discord channel. It's a channel where people publish "broken" grids, and the goal of the exercise is to prove that the puzzle has no solutions, and hopefully to learn something about the published interaction of constraints. You can try it too :)
And, as it often happens, several people decided to create a puzzle based on the "no solutions" grid. I Love Sleeping, the author of the original grid, decided to remove part of the clues, while preserving the idea - here's his puzzle: link. I, on the other side, didn't remove a thing, but added Schrödinger cells to the picture. And this is what came out of it. Enjoy!
Rules:
Standard Schrödinger cells sudoku rules apply: put digits 0-9 into every row, column and box without repeat. In order to achieve that, 1 cell in every row, column and box is a Schrödinger cell - it contains 2 digits.
Standard XV: digits on a X sum to 10, digits on a V sum to 5.
Solve online: SudokuPad
in the "no solutions" Discord channel. It's a channel where people publish "broken" grids, and the goal of the exercise is to prove that the puzzle has no solutions, and hopefully to learn something about the published interaction of constraints. You can try it too :)
And, as it often happens, several people decided to create a puzzle based on the "no solutions" grid. I Love Sleeping, the author of the original grid, decided to remove part of the clues, while preserving the idea - here's his puzzle: link. I, on the other side, didn't remove a thing, but added Schrödinger cells to the picture. And this is what came out of it. Enjoy!
Rules:
Standard Schrödinger cells sudoku rules apply: put digits 0-9 into every row, column and box without repeat. In order to achieve that, 1 cell in every row, column and box is a Schrödinger cell - it contains 2 digits.
Standard XV: digits on a X sum to 10, digits on a V sum to 5.
Solve online: SudokuPad
Solution code: digits of the bottom row (for the Schrödinger cell, enter the lower digit first)
Solved by lmdemasi, SKORP17, mnhuik, Clara123, blueberrypug, paranoid, strangelyinsane, piyush
Comments
on 5. April 2025, 09:16 by chameleon
Yes, the puzzle is quite hard.
If you still want to solve it without cheating, suggest checking why the "no solutions" grid above is broken, and/or solving the linked puzzle from I Love Sleeping - they are both easy, and both share the same idea of why this pattern restricts the grid.
on 5. April 2025, 04:02 by mnhuik
I have to admit that I finished this by repeatly using the check button.Tried to color the cells that value more than 5,and made sure about which calls have only one digit in box 4 & 8,then totally failed to find any more clues after taking more than 3 hours.
