Math-Frolic!

  Here’s a puzzle I’ve lifted from THIS blog (who got it from Facebook poster Millie Johnson): Arrange the digits 0‑9 into a ten-digit nu...

  In case you enjoy twisting your brain in knots: https://josmfs.net/wordpress/wp-content/uploads/2022/02/Heron-Suit-Problem-201001.pdf

Ben Orlin on some great puzzle books: https://mathwithbaddrawings.com/2022/01/24/what-makes-a-great-puzzle-five-books-five-answers/  

  A little logic puzzle from Presh Talwalkar to start off the year: https://mindyourdecisions.com/blog/2022/01/03/incredible-logic-puzzle-fo...

  Today, from Futility Closet : https://www.futilitycloset.com/2021/12/08/balance-8/

 To rev up your brain, Alex Bellos offered forth 3 puzzles today: https://www.theguardian.com/science/2021/nov/29/can-you-solve-it-yule-devo...

  Gathering For Gardner talks all week long starting Monday: https://www.gathering4gardner.org/g4gs-celebration-of-mind-2021-10/

  A tricky one from Futility Closet today: https://www.futilitycloset.com/2021/09/08/exam-week/

 From Futility Closet , another checkerboard problem: https://www.futilitycloset.com/2021/08/26/paint-job/

  A few logic problems (via Alex Bellos) to start your week: https://www.theguardian.com/science/2021/aug/23/can-you-solve-it-logical-philos...

  From Presh Talwalkar yet another triangle geometry problem to end the week: https://mindyourdecisions.com/blog/2021/08/16/triangle-stripes...

  To begin the week, 6 new 'lateral thinking' puzzles from Futility Closet : https://www.futilitycloset.com/2021/08/09/podcast-episo...

  Just a  little number fun from Christian Lawson-Perfect: https://somethingorotherwhatever.com/sum-of-3-palindromes/

  From Presh Talwalkar another logic conundrum to end the week: https://mindyourdecisions.com/blog/2021/07/27/balls-in-sack-logic-test/

  'Rock, paper, scissors' fans, a puzzle from Futility Closet : https://www.futilitycloset.com/2021/07/28/implementia/

A few Alex Bellos puzzles (actually from philosopher Joel David Hamkins) to jumpstart your week: https://www.theguardian.com/science/2021/ju...

 I've talked of self-describing sentences or "autograms" here before (I love 'em, and their Gödelian flavor!), and recentl...

  Recent non-intuitive puzzle on Twitter from Joel David Hamkins: https://twitter.com/JDHamkins/status/1407605175154532353

  In case you were hoping to blow your mind today Futility Closet can aid in the process: https://www.futilitycloset.com/2021/06/23/fermats...

  You are hopefully familiar with knight/knave logic   problems (made famous by Raymond Smullyan) — knights are truthtellers who always tel...