puzzles Challenge: Can you draw this figure in a single line? Carla Sinclair

party tricks Learn how to balance 6 nails on top of a wooden dowel to wow your friends Carla Sinclair

args How the mystery man from a forgotten Alternate Reality Game was found 15 years later Rob Beschizza

puzzles Rubik's Connected Cube tells you how to solve it Rob Beschizza

web games Neumorphic Knots — a fun web-based puzzle game Mark Frauenfelder

brain teasers Excellent cheap puzzle book: The Moscow Puzzles: 359 Mathematical Recreations Mark Frauenfelder

puzzles After 14 years, a puzzle to find a man has been solved Mark Frauenfelder

contraptions Wooden puzzle box for storing stuff Clive Thompson

puzzles Two puzzles with the cuts of each printed on the other David Pescovitz

puzzles "Blocks" is a fun web-based puzzle game that gets increasingly more challenging Mark Frauenfelder

factories Video of a jigsaw puzzle factory Mark Frauenfelder

rubik Tiny $1900 Rubik's Cube Rob Beschizza

puzzles Here's how to solve a complex metal tavern puzzle Andrea James

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

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

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

sudoku 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

Impossibilities Why this sliding tile puzzle arrangement is impossible Mark Frauenfelder