Friandises Math

Towers of hats (1/3)

A towering pillar of hats (number $4$)

This is the first in a series of three exercices de style to show some interesting aspects of the game of hats: a puzzle which was initially proposed by Lionel Levine, and arose from his work with Tobias Friedrich on

Geek Tips

git filter-repo

Eventually you will commit a huge file to your git repository by mistake. Use git-filter-repo to remedy the situation.



Friandises Math Tips

Schizo: a different sudoku solving technique

Over the years, several tips and techniques have been developed to help solve sudoku puzzles with logic rather than brute force. To name a few, sudoku9x9 mentions (among others) hidden single, naked single, x-wing.