Qapla Chess GUI
Author: Volker Böhm
Qapla Chess GUI is a professional-grade chess interface specifically designed for chess engine developers and engine testers. While it can be used for regular chess play, its primary focus is on providing powerful tools for engine development, testing, and tournament management.
Key Features
Tournament Management
Parallel Tournament Execution - Run multiple tournaments simultaneously with up to 32 parallel games
SPRT Testing (Sequential Probability Ratio Test) - Statistical engine comparison with parallel game execution
Resumable & Extendable - Tournaments can be interrupted and resumed later, or extended with additional rounds
Gauntlet & Round-Robin formats with comprehensive rating tracking
Live Monitoring - Watch any ongoing game via tab-based interface; switch between games in real-time
Result Matrix - View comprehensive tournament results in matrix format via chatbot
Interactive Chatbot - Get help using the GUI with the integrated assistant
Position Analysis
Multi-threaded EPD Analysis - Analyze positions from EPD files using multiple engines in parallel
UCI Engine Testing - Comprehensive engine compliance and behavior validation
Extensive Logging - Detailed protocol communication and engine behavior tracking
Auto-detect Opening Formats - Automatic detection of opening file formats (PGN, EPD, FEN)
Game Management
PGN Support - Load, filter, and analyze PGN game databases with proper time control handling
Multiple Board Workspaces - Open and manage multiple games/positions simultaneously via tabs
Advanced Filtering - Search and filter games by various criteria with persistent filter states
Detailed Tab Information - Hover tooltips showing round, game, engines, and position details
User Experience
Integrated Tutorial - Built-in help system with clear button for new users
Comprehensive Settings - All features of the command-line engine tester accessible via GUI
Real-time Control - Adjust concurrency, monitor progress, and control running tournaments on the fly
Modern Interface - Clean, responsive UI with OpenGL rendering
Multilingual Support - Localization support (English, Deutsch, Français) with language selector in Settings
Comprehensive Tooltips - Helpful tooltips on all controls
Smart File Dialogs - File filtering by appropriate extensions for tournaments and SPRT tests
Remote Desktop Optimization - Option to reduce GUI resource usage when using remote desktop on Linux

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