A new puzzle every Saturday. Solutions one week later.

>>>>Basic Stats<<<<
1203 weeks, 1234 pages & 8421 days
23 years + 20 days
>>>>Puzzlers Statistics<<<<
(updated on May 1, 2021)

Puzzle of the week

Puzzle 1041. σ2(x)=σ2(x+1)

Curios by CR in Prime Curios!
(updated on April 30, 2021)

Latest ten news


Date Puzzle about


10 June-11-21 Conjecture 82 Alain Rochelli
9 June 4-21 Conjecture 89

Puzzle 178 and Puzzle 887

Adam Stinchcombe, Alain Rochelli

Richard Chen

8 May-28-21 Puzzle 1040

Puzzle 1039

Fred Schneider, Giorgos Kalogeropoulos, Jan van Delden,

Giorgos Kalogeropoulos

7 May-21-21 Puzzle 1039


Puzzle 614

Giorgos Kalogeropoulos, Oscar Volpatti, Paul Cleary, Simon Cavegn and Emmanuel Vanieghem.

Richard Chen

6 May-14-21 Puzzle 1038 Giorgos Kalogeropoulos, Shyam Sunder Gupta, Paul Cleary, Metin Sariyar, Adam Stinchcombe, Hakan Summakoglu, Simon Cavegn, Oscar Volpatti and Emmanuel Vantieghem
5 May-7-21 Puzzle 1037 Giorgos Kalogeropoulos, Simon Cavegn, Ivan Ianakiev, Hakan Summakoglu, Oscar Volpatti and Metin Sariyar
4 April-30-21 Puzzle 1035

Puzzle 1036

Fred Schneider

Giorgos Kalogeropoulos, Paul Cleary, Hakan Summakoglu, Oscar Volpatti, Gennady Gusev.

3 April-23-21 Puzzle 998 Oscar Volpatti
2 April-16-21 Puzzle 1034 Oscar Volpatti
1 April-9-21 Puzzle 1033

Puzzle 762

Oscar Volpatti

Richard Chen


These pages will be updated every Saturday morning -- Last Modified on: Friday, 11-Jun-2021 14:35:23 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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