CATUR

Modern Chess** is a classic chess game with a modern look and features. Built purely with HTML5, CSS3, and JavaScript without frameworks, it's packaged as a lightweight Android app that runs smoothly on both phones and tablets. ### 🎮 Game Modes - **Solo (Vs AI)** — Challenge the computer with 5 intelligence levels: Easy, Medium, Hard, Expert, and Master. - **Local (2 Players)** — Play on the same device with a friend. - **Split Screen** — Split screen for two players on the same device. - **Co-Op** — Team play against the AI ​​with chat features. - **Online** — Remote multiplayer via WebSocket / WebRTC with lobby room code, ping/latency, and reconnection system. ### 🧠 Intelligent AI & Complete FIDE Rules - Complete chess engine: en passant, promotion, castling, check/checkmate, stalemate, threefold repetition, 50-move rule, insufficient material, draw, resign, undo & redo. - AI Minimax + Alpha-Beta pruning, transposition table, opening book, and endgame heuristics. The AI ​​never makes illegal moves. ### ✨ Modern Visuals & Audio - Glow, bloom, particle, confetti, fireworks, screen flash, and camera shake effects. - Smooth pawn animations with a target 60 FPS. - Sound via audio file or automatic WebAudio synthesis (when assets are not available). - Pawns display PNG images or fallback Unicode chess emojis. ### ⏱️ Other Features - **Timer**: Blitz / Rapid / Unlimited + increment & delay. - Themes: 7 board themes and 7 piece themes (Classic, Wood, Marble, Neon, Sci-Fi, etc.). - Automatic save/load to local storage (FEN, history, timer, statistics). - Statistics: win/lose/draw, win rate, accuracy, move count. - Export/import PGN & FEN (copy to clipboard). - Controls: touch, mouse, keyboard, and gamepad. - Languages: Indonesian & English. - Runs offline — no internet connection required for Solo/Local mode. ### 🚀 Performance Optimized with object pool, sprite cache, and requestAnimationFrame for a responsive and memory-efficient gaming experience across Android devices.