What if your biggest challenges could become your greatest teachers? Learn five ACT-based ways to work with problems instead ...

A mathematical problem that had remained unsolved for more than 10 years in the physics of complex systems has finally been ...

Looking for help with today's New York Times Pips? We'll walk you through today's puzzle and help you match dominoes to tiles ...

These short anomaly-detection puzzles are designed to illustrate how reasoning often depends on identifying inconsistencies ...

The other day (July 3, 2026), I participated in the ICPC Domestic Preliminary with a team called Nubies. The members are aruru88, chihi311, and orangekid. I was invited by aruru88, and when I ...

This repository contains my daily problem-solving practice, contest solutions, and occasional notes on the intuition, observations, and approaches used to solve problems.