Problem of the Day (POD)

The International Logic Olympiad (ILO) is a global competition built around one idea: logical thinking is a skill worth practicing daily, not just testing once a year. Every day, ILO publishes a new logic problem for each of its three divisions, Primary, Junior, and Senior, so solving one becomes a habit rather than an occasional event.

Each day's Problem of the Day (POD) is self-contained, and all you need to try it is a free Playega account (no separate ILO registration). The official solution is published here too, so anyone who gets stuck, or just wants to check their reasoning, can see exactly how the problem was meant to be solved. Every past day's problems and solutions stay available under Archives, newest first, so building a personal practice set is as simple as scrolling back.

ILO also runs a Weekly Contest: one problem, open to any registered Playega user until the admin closes it, with a real winner announced once it does. Same daily-practice philosophy, just with a deadline and a leaderboard attached.