Link to video: https://www.youtube.com/watch?v=vp54kvLdGWo

Math problems take time to solve, and solutions cannot be rushed.

There is something intriguing about sorting. It is like deciphering a code. Walsh takes you, step-by-step, into this sorting world, and how it relates to cryptography. He discusses the problem of time being a predictor of how hard a problem is to solve, and also a predictor of whether the problem will be tackled.

There is a practical side to solving math problems, and if you are reading this article it is possible you do not feel you can spare the time to devote to performing the analysis yourself; and it’s gratifying to read Walsh’s explanation of the relationship of time to the choice of a math problem.

Most of us end up being required to take the Swiss cheese approach of tackling parts of the problem, in the chunks of time we have available, and coming back to it at intervals. It’s a legitimate approach for busy people. But what a gift Walsh offers when he guides us through his analysis of the underlying math of Candy Crush Saga.

Click the next page to see how Candy Crush Saga meets the definition of a notoriously difficult math problem.