Introduction to the problem and the controversy. As well as a simulator. Includes a link to the nex...
Short introduction for beginners.
Includes a introduction to the problem, a hint to the solution and the solution. The author attempt...
Dr Math answers a reader question and explains why the puzzle works the way it does.
Thorough discussion of the problem, with solutions explained.
Introduces the problem and tries to look at the problem in a new light.
Wikipedia article on this problem and its solution.
The problem and a discussion on the validity of the solution.