A new puzzle every Saturday. Solutions one week later.

Basic Stats
1055 weeks, 1088 pages & 7385 days
20 years + 2 months + 19 days

>>>>Puzzlers Statistics<<<<

Puzzle of the week

Coll.20th-013. The set {a+m,a+2m,...} contains infinitely...

Curios by CR in Prime Curios!


The last five news

Date Puzzle about


Ago-17-18 Coll.20th-009 Dmitry Kamanetsky and Antoine Verroken.
Ago-3-18 Puzzle 24 Giovanni Resta
July-20-18 Coll.20th-007


Puzzle 134

Jan van Delden

Jan van Delden

Carlos Rivera, Emmanuel Vantieghem

July-13-18 Coll.20th-007

Puzzle 32 Puzzle 134

Emmanuel Vantieghem

Carlos Rivera
Carlos Rivera


July-6-18 Coll.20th-006

Puzzle 238

Fred Schneider, Giovanni Resta, Jan van Delden & Emmanuel Vantieghem.

James Lavelle
, a big clap because he solved the first, a puzzle posed 15 years ago!!!


These pages will be updated every Saturday morning -- Last Modified on:

"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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