The Project
Riddle of the Day is an independent educational platform created by Gabriel Sobrino, a mathematician trained at the Complutense University of Madrid.
The project publishes logic and math challenges designed to train reasoning, numerical intuition, and problem-solving skills.
Each riddle aims to be clear, elegant, and verifiable: not just entertaining, but genuinely helpful for thinking better.
Technology
Riddle of the Day is built as a lightweight, fast, and accessible digital project, with an architecture designed to publish, review, and maintain daily content reliably. The technical priority is a clear, respectful, low-noise experience: no intrusive advertising, no recommendation algorithms, and the content at the center.
Vision
Build a living library of mathematical reasoning in Spanish and English, with daily content, a thematic archive, and future personalized learning experiences.
Contact
For collaborations, startup programs, or project-related matters: