A new puzzle every Saturday. Solutions one week later.

>>>>Basic Stats<<<<
July-25-2026
1470 weeks, 1501 pages & 10290 days
28 years 2 Months 1 days
Since May 23 1998

Puzzle of the week

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

Latest ten news

No.

Date Puzzle about

Solvers

10 July-24.2026 Puzzle 1276


Puzzle 1275
Ashaz Jameel, Paul Cleary, Oscar Volpatti, Giorgos Kalogeropoulos.

Ankit Chakraborty.

Carlos Rivera (about a new & larger Magic square, 19683x19683, sent by Roberto Carlos Angelone)
9 July-17-2026 Puzzle 1275

Puzzle 1002
Carlos Rivera

Rahid Zaman
8 July-10-26 Puzzle 1274




Puzzle 1273
Giorgos Kalogeropoulos, Emmanuel Vantieghem, Michael Branicky, Gennady Gusev, M. F. Hasler, Paul Cleary, Simon Cavegn

M. F. Hasler
7 July-3-2026 Puzzle 1273


Puzzle 1271
Michael Branicky, Paul Cleary, Roberto Angelone

Ashaz Jameel
6 Jun 18-26 Puzzle  1271

Puzzle 50

Puzzle 233

Puzzle 1267

Puzzle 1270

Simon Cavegn, Michael Branicky

Arina Bator

Alex Violette

Simon Cavegn

Simon Cavegn

5 Jun-11-26 Puzzle 1270


Puzzle 645

Puzzle 50,

Puzzle 899
Rahid Zaman, Gennady Gusev, J. M. Rebert, Paul Cleary

Steffen Jakob

Arina Bator

Arina Bator
4 Jun-5-26 Puzzle 1269

Problem 93
Emmanuel Vantieghem

Oscarf Volpatti
3 May-29-26 Problem 93


Problem 92
Michael Branicky, Paul Cleary, Oscar Volpatti

Emilia Gurisatti
2 May-22-26 Puzzle 1268

Puzzle 1264
Emmanuel Vantieghem

Simon Cavegn got a new record of twin & emirps primes!
1 May-5-26 Puzzle 1267


Puzzle 1266

Puzzle 124

Puzzle 55
Emmanuel Vanieghem, Carlos Rivera


Ashaz Jameel

Arina Bator

Ashaz Jameel

 


These pages will be updated every Saturday morning -- Last Modified on: Friday, 24-Jul-2026 17:36:31 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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