Aptos tournament report

It’s here! The one day out of every year when I turn into a tournament director, at the Aptos Public Library. Before I go any further, I should give credit where credit is overwhelmingly due: to the Aptos Library and to Heather Pereira (the chief librarian) and...

The World’s Simplest Card Game

Two years ago I went to Atlanta to attend the “Gathering for Gardner,” a biennial conference on math, magic, games, and puzzles in honor of the late Martin Gardner. I gave an 8-minute talk at the meeting, and the video of my talk has just been posted...