"The Best Puzzle I've Done This Year"
1:33:34
The Sudoku Rat Run Is Back! (With A Mouse!!)
56:11
An Extraordinary New Sudoku Rule
1:46:22
Can You Help This Sudoku Expert Out?
22:04
The Genius Way Computers Multiply Big Numbers
27:29
The unexpected logic behind rolling multiple dice and picking the highest.
20:08
Complex Fibonacci Numbers?
17:33
You Can't Measure Time
13:51