Mathematicians Say Candy Crush Really Is Hard

You can feel better about your obsession with Candy Crush. The game isn’t just mindless swiping; it's an actually difficult math problem.

This by the way is old news. It was proved by Walsh in 2014. Also, the

Why Candy Crush is so difficult – and popular? – cartesian product … stuff about computing mostly

Candy Crush Is Harder Than It Sounds - NP Hard

The 10 Hardest Math Problems That Were Ever Solved

Candy Crush Is Harder Than It Sounds - NP Hard

The 10 Hardest Math Problems That Were Ever Solved

What is the hardest math problem ever? - Quora

Are Filipinos Struggling with Computations? Here are Fun Ways to Improve Mental Math Skills - Pinoy Top Tens

It's not you – solving a Rubik's cube quickly is officially hard

Mathematician says Candy Crush is really, really hard - CNET

Totally addicted to apps: difficulty makes Candy Crush so sweet