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# Puzzles

## Latest Articles

### Quanta’s Science and Math Crossword Puzzle

This holiday season, catch up on science and math news while solving our year-end crossword.

### Solution: ‘Triumph or Cooperation in Game Theory and Evolution’

How well does the Nash equilibrium concept from game theory map to the real world?

### How to Triumph and Cooperate in Game Theory and Evolution

In applying game theory to biology and human behavior, have scientists focused too much on competition over cooperation?

### Solution: ‘How to Win at Deep Learning’

When equipped with hidden layers, deep neural networks can accomplish nonlinear feats that are difficult even with sophisticated mathematics.

### How to Win at Deep Learning

What happens when you increase the number of layers in an artificial neural network?

### Solution: ‘Are Genes Selfish or Cooperative?’

Puzzle solvers rediscovered a simple mathematical result of Mendelian genetics and weighed in on a Richard Dawkins metaphor.

### Are Genes Selfish or Cooperative?

Can you discover a simple mathematical result of Mendelian genetics that describes how genes interact with each other?

### Solution: ‘The Prime Rib Problem’

Pradeep Mutalik and Quanta readers explore an open question about prime numbers: What is the lowest valued, longest consecutive sequence of integers that are divisible by a set of prime numbers?

### The Prime Rib Problem

Prime numbers are endlessly fascinating to number theorists and math enthusiasts. This month’s puzzle explores primes by cooking up a whimsical dish of grilled snake ribs.