Calcudoku puzzle forum

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- Announcements
  
  New features on the site
  
  188
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  1831
  Posts
  
  Re: new ad provider, opinions…
  by pnm » Wed May 13, 2026 8:12 pm
- Calcudoku General
  
  Anything that doesn't fit in the other forums
  
  383
  Topics
  
  4043
  Posts
  
  Re: internet disconnected in …
  by pnm » Thu May 28, 2026 11:48 am
- Solving strategies and tips
  
  For questions and answers about how to solve Calcudokus
  
  87
  Topics
  
  669
  Posts
  
  Re: Calcudoku Solver/Grader
  by pnm » Tue Mar 17, 2026 10:19 pm
- Specific puzzles / your own puzzles (Calcudoku / Killer Sudoku)
  
  Discuss a specific puzzle (e.g. "the 8x8 difficult Calcudoku of Thursday"), or post puzzles you designed yourself.
  
  238
  Topics
  
  1709
  Posts
  
  Re: someone stuck on a Calcud…
  by frederick » Mon Apr 20, 2026 9:44 pm
- Timed Puzzles
  
  For discussion of the puzzles against the clock, their scoring, strategies, etc.
  
  138
  Topics
  
  1495
  Posts
  
  new 8x8 record!
  by pnm » Fri Jun 12, 2026 5:07 pm
- Killer Sudoku
  
  For discussion of the site's Killer Sudoku puzzles.
  
  61
  Topics
  
  448
  Posts
  
  Re: The figures on the puzzle…
  by pnm » Tue Apr 21, 2026 2:12 am
- Sudoku solving / your own Sudokus / your own other puzzles
  
  For discussion of the site's Sudoku puzzles, creating Sudokus, variants, solving strategies, etc.
  
  64
  Topics
  
  161
  Posts
  
  Re: I don't understand the so…
  by vivivi » Tue Jan 27, 2026 3:54 pm
- Other number stuff
  
  Any other math / number / puzzle / etc. related topics
  
  42
  Topics
  
  233
  Posts
  
  if the Calcudoku site had bee…
  by pnm » Mon May 04, 2026 3:26 pm
- Bugs and errors
  
  Report anything that's broken.
  
  384
  Topics
  
  2308
  Posts
  
  Re: Long Time Puzzler Ranking…
  by pnm » Wed May 13, 2026 8:10 pm

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