| Date | Subject |
|---|---|
| August 14, 1990 | Euclid's proof |
| February 19, 1991 | Correction to which kind |
| July 10, 1991 | GAMES magazine |
| July 24, 1991 | A Puzzling Catalyst (Spoiler, but the puzzle continues) |
| January 8, 1992 | Noughts and crosses |
| July 20, 1994 | Game analysis sought |
| May 8, 1995 | An interesting Moebius band problem |
| July 14, 2003 | Marilyn Vos Savant again ????? |