Chess Lab
Featuring stunning 2.5D graphics and the high-performance chess engine "Arasan". Not just for playing—experience real-time evaluation and deep historical analysis. Play, study, and master every move in one comprehensive app.
Download on App Store
Professional Analysis Features
Arasan Engine Integration
Harness the precision of the "Arasan" engine. Monitor the evaluation graph in real-time to objectively track the tide of battle as you pursue the perfect move.
Stunning 2.5D & Flat Boards
Switch seamlessly between immersive 2.5D visuals and highly visible 2D flat views. Legal move highlighting prevents errors, letting you focus entirely on your strategy.
Precise Thinking Time Visualization
Thinking time for each move is recorded in the game record. Highlights for critical blunders and long pauses (top 5% in red / top 15% in yellow) identify key review points instantly.
Advanced Game Review
Jump to any position in the kifu immediately. With play, step-back, and step-forward controls, researching your past matches has never been smoother.
Online Matches & Rankings
Compete against players nationwide in real-time. Rise through the global rankings and keep detailed records of your performance and statistics.
Flexible Lv.1–Lv.30 Adjustment
Choose from 30 CPU difficulty levels. With features like UNDO, side selection, and game save/resume, the app adapts perfectly to your playstyle.
Gameplay Preview
Support & Engine
For feedback or bug reports, contact us at:
whistextapp@gmail.com
Engine: Arasan (MIT License)
Full support for promotions and all international chess rules.
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 Play: CPU matches and local 2-player mode operate entirely offline; no data is transmitted.