A new puzzle every Saturday. Solutions one week later.

>>>>Basic Stats<<<<
1130 weeks, 1162 pages & 7910 days
21 years + 7 month + 26 days

>>>>Puzzlers Statistics<<<<
(updated on Feb 28 2019)

Our dear friend Farideh Firoozbakht passed away on Dec 24, 2019.
See more details in her short bio page.
Note published on Jan 11, 2020

Puzzle of the week

Puzzle 986. Consecutive primes from a given set of integers.

Curios by CR in Prime Curios!
(updated on Feb 28 2019)

The last five news

Date Puzzle about


Jan-17-20 Puzzle 985 Giovanni Resta, Adam Stinchcombe, Jan van Delden
Jan-10-20 Puzzle 984 Fausto Morales, Emmanuel Vantieghem
Jan-3-20 Puzzle 983 Fred Schneider, Jim Howell, Emmanuel Vantieghem and Carlos Rivera
Dec-27-19 Puzzle 982 Giovanni Resta and Emmanuel Vantieghem
Dec-20-19 Puzzle 79

Conjecture 23

Arkadiusz Wesolowski

Metin Sariyar


These pages will be updated every Saturday morning -- Last Modified on: Friday, 17-Jan-2020 15:50:02 MST

"Many thanks to Martha Rivera, Miguel H. Rivera and  G. L. Honaker, Jr. for reviewing and correcting the  very first version of these pages, dated on May 23, 1998 "

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