puzzles Unknown Pleasures puzzle Rob Beschizza

puzzles Can you solve the "Hanging Cable" problem, used as an Amazon interview question? Mark Frauenfelder

math How many triangles do you see? David Pescovitz

puzzles Chess: take the Knight's tour online Rob Beschizza

puzzles Highlights from the Red Bull Rubik's Cube World Cup John Struan

puzzles Where is the 5th pig? Mark Frauenfelder

Entertainment An escape room where you have to remove your booby-trapped pants before they explode John Struan

Games Review / Manifold Garden Rob Beschizza

puzzles Can you solve the secret sauce riddle? Mark Frauenfelder

happy mutants Regular expression crossword puzzles! Cory Doctorow

News The problem with 'The Monty Hall Problem' was Monty Hall Jason Weisberger

happy mutants Svalbard: a "puzzle story" created by Lavie Tidhar and Jake Olefsky Cory Doctorow

robots Watch a robot solve a Rubik's cube in less than half a second David Pescovitz

puzzles Can you solve the two-fuse puzzle? Mark Frauenfelder

Games Two 'Rubik's Race' players compete at mind-boggling speed Xeni Jardin

puzzles Wooden fractal curve puzzles Rob Beschizza

puzzles Two lateral thinking puzzles Mark Frauenfelder

puzzles The broken bracelet puzzle Mark Frauenfelder

puzzles How to get better at solving puzzles Mark Frauenfelder

puzzles Meet one of the creators of the New York Times crossword puzzle David Pescovitz