Chess Lab
Stunning 2.5D graphics meet the high-performance Arasan chess engine. Go beyond playing—track real-time game evaluations and perform in-depth analysis. The complete chess experience for practice and mastery, all in one app.
Download on App Store
Professional Analysis Features
Arasan Engine Integration
Equipped with the powerful Arasan engine for precise analysis. Track the flow of the match with real-time evaluation graphs while pursuing your best moves.
Stunning 2.5D & Flat Views
Switch between immersive 2.5D visuals and high-visibility flat boards anytime. Legal move highlights ensure a smooth, error-free gameplay experience.
Precise Thinking Time Analysis
Visualize thinking time for every move. Critical time-consuming moves are highlighted in red (top 5%) or yellow (top 15%), helping you identify your reading rhythm.
Advanced Kifu Review
Jump to any position instantly by tapping the game record. Effortlessly study past matches with professional play, back, and forward controls.
Online Matches & Rankings
Compete in real-time with players worldwide and climb the global rankings. Detailed match history and performance data are meticulously recorded.
30 CPU Difficulty Levels
Choose from 30 difficulty levels to match your skill. Tailored to your playstyle with features like UNDO, move-by-move navigation, and save/resume.
Gameplay Preview
Support & Engine
For bug reports or feedback, contact us at:
whistextapp@gmail.com
Engine: Arasan (MIT License)
Fully supports professional rules including promotion, castling, and en passant.
Privacy Policy
We prioritize and protect your privacy above all else.
- Online Features: Temporary identifiers are used solely for matchmaking and rankings.
- Personal Data: We do not collect names, email addresses, or any other personal information.
- Offline Mode: CPU matches and local 2-player mode operate entirely offline; no data is transmitted.