About Math Duel
🎯 What is this?
A focused collection of math-and-logic puzzle games, with 3 hand-picked titles. No login, no ads, no tracking — pure static + PWA, offline-capable. Five minutes a day to sharpen your mind.
🎮 Featured games
- 🧩 Sudoku 9×9 — Classic fill-the-grid, exercising logical reasoning
- 🎯 24 Game (Standard) — Four random cards; use +, −, ×, ÷ and parentheses to make 24
- 🔺 Equation Pyramid — A target sits at the top; pick cells from the grid below to build an equation
✨ Features
- 🚫 No login, no signup — open and play
- 🚫 No ads, no tracking — zero distractions
- 📱 Phone / tablet / desktop — responsive design
- 💾 Local score storage — localStorage, zero privacy leakage
- 🌐 Offline playable — PWA support, works without network
- ⚡ Lightning fast — pure static HTML + JS, no backend
🎓 Why focus on logic puzzles?
Most casual mobile games are match-3, endless runners, or card games — heavy on repetition. We chose a small but beautiful path of differentiation:
- Exercise your brain — each game trains a specific cognitive ability (logic, reasoning, memory, spatial awareness)
- For all ages — from 8 to 80, cross-generational play
- No time pressure — no stamina or coin limits, play as long as you like
- Mathematical beauty — Sudoku symmetry, 24 Game combinations, Klotski sliding — each game hides mathematical principles
🔧 Tech stack
Pure front-end: HTML5 + CSS3 + JavaScript. Data lives in browser localStorage — no backend server. Deployed via nginx static hosting with TTFB < 50ms.
📜 Copyright & disclaimer
- Code: All code on this site is original, released under CC-BY 4.0.
- Gameplay: All games featured are common classics (public domain).
- Emoji: All Emoji on this site come from the Unicode standard (system-provided) — no copyright concerns.
- No infringement: We collect no user data and include no third-party tracking, ads, or external asset references.
📞 Feedback
If you have game suggestions or spot suspected infringement, please contact [email protected] — we'll respond within 24 hours.