Chess Lab: Arasan AI Engine

Chess Lab: Arasan AI Engine combines a world-class chess engine with a beautiful, intuitive interface. Whether you are a beginner looking to improve or an advanced player seeking serious analysis and competitive matches, this app brings everything together in one place.

▪ Play Instantly with “Web Invite”
• No need to ask friends to download the app or create an account.
• Generate an invite link, send it, and they can join instantly from any smartphone or PC browser.

▪ Versatile Game Modes
• Online Multiplayer: Compete against players worldwide and climb the global leaderboards.
• Web Invite Play: Seamless private matches via URL.
• Offline CPU Battles: Train against the powerful Arasan AI with 40 adjustable strength levels.
• Local 2-Player: Play face-to-face on a single device.

▪ In-Depth Analysis & Replays
• Powered by Arasan: Built-in robust UCI engine delivers highly accurate evaluations and best-move calculations.
• Real-Time Evaluation: Monitor the advantage bar and centipawn score/graph during your game.
• Interactive History: Replay matches with step-by-step playback, fast-forward, and instant position jumping.
• Visualized Insights: Automatically highlights significant evaluation drops (blunders) and color-codes long-thinking moves (Red/Yellow).
• PGN Import: Import external game data (PGN).

▪ Premium Board Experience
• 2.5D & 2D Views: Switch between an immersive 2.5D perspective and a classic flat board.
• Assistive Highlights: Clearly displays legal moves, captures, and checks to help prevent mistakes.
• Full Promotion Support: Choose Queen, Rook, Bishop, or Knight when your pawn reaches the final rank.
• Suspend & Resume: Automatically saves unfinished games so you can continue later.
• Tactile Feedback: Smooth animations paired with high-quality haptics for a satisfying feel.