Free chess tactics trainer that adapts to your level. 🧩 500,000+ puzzles across 70+ themes 📈 Real ELO system that evolves with your skill 🤖 AI Coach feedback on every move ⚡ Sprint mode — solve as many as possible in 3 min 💀 Survival — one mistake ends the run 🔥 Daily streak with freeze protection 🏆 Achievements & unlockable avatars 👥 Friend system with public profiles All features free during launch. No ads.