Today's grid has left-right mirror symmetry. That is, it is symmetrical around a vertical line down the center of the puzzle. Mirror symmetry often results in some interesting grid patterns.

Today's grid has left-right mirror symmetry. That is, it is symmetrical around a vertical line down the center of the puzzle.

In 1970, British mathematician John Horton Conway created a zero-player videogame, dubbed "Conway's Game of Life". The game takes place on a grid of squares, and the only input a user can have is ...

The new findings also suggest that grid patterns may be more prevalent in humans. Human grid cells were found in the entorhinal cortex – same as the rats – but also in the cingulate cortex.

Marshal: I'm happy to have another puzzle published at USA Today! It's a pleasure to construct themed puzzles for the USA Today because they allow a lot of freedom in the grid pattern, so I have ...