puzzles A surprising solution to the (in)famous "Cross the Network" puzzle Mark Frauenfelder

puzzles My trip through the Starmaze: a world in the 9th dimension Jane Frauenfelder

puzzles Can you solve the "scrambled box tops" puzzle? Mark Frauenfelder

puzzles Watching this guy solve a sudoku is deeply satisfying Mark Frauenfelder

puzzles Can you rearrange these cards, sudoku style? Carla Sinclair

puzzles Watch a master solve a nightmare ring puzzle Rob Beschizza

toys Why this sliding tile puzzle arrangement is impossible Mark Frauenfelder

Games Chocolate Fix: a favorite puzzle game Mark Frauenfelder

puzzles Can you solve the "artist's dilemma" problem? Mark Frauenfelder

puzzles Cool magic trick: The Perpetual Puzzle Mark Frauenfelder

math Weird and wild warped-grid jigsaw puzzles inspired by Mobius, Haeckel, and Picasso David Pescovitz

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