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Results tagged with puzzle-creation
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user 96
A question about the creation and development of puzzles. Not to be used for requesting the creation of a puzzle.
18
votes
Accepted
Are there "rules" (or consistent conventions) that limit when the NY Times Crossword can dev...
Nearly all the Times crossword grids have rotational symmetry: they
can be rotated 180 degrees and remain identical. Rarely, puzzles with
only vertical or horizontal symmetry can be found; yet …
- 400
9
votes
Accepted
Removing numbers from a full sudoku puzzle to create one with a unique solution
Here's how to remove numbers from a full Sudoku puzzle to create one with a single unique solution:
Remove a number,
Run a solver,
Check if the puzzle is still unique,
Repeat until solver is unabl …
- 400