A few of the puzzle sites on the Web that I visit regularly (more-or-less):

• The NPR Weekend Edition Sunday Puzzle from Will Shortz (general puzzle, changed weekly)


• The Car Talk Puzzler from Click and Clack (general puzzle, changed weekly)


• The Problem Corner at Missouri State University (mathematics puzzles, changed monthly)
  Here are links to my answers (from a long time ago ...):
  • Advanced Problem #11
  • Challenge Problem #3 (1998)
  • Challenge Problem #4 (1998)
  • Challenge Problem #5 (1998)


• Mathpuzzle.com, maintained by puzzler Ed Pegg, Jr.