π OXYDAN v7.0
Special Bot For Lichess | Optimized by Emir KaradaΔ
π― Project Overview
Oxydan v7 is not just a chess bot; it is a high-performance computational experiment. Built upon the legendary Ethereal core, Oxydan utilizes state-of-the-art Alpha-Beta searching paired with Efficiently Updatable Neural Networks (NNUE). This version (v7.0) is specifically fine-tuned for Lichess ecosystem dynamics, balancing aggressive tactical play with profound positional understanding.
βοΈ Challenge Protocol
βοΈ Core Engine Specs
- Engine: Ethereal (Neural Hybrid)
- Search: Selective Depth Alpha-Beta
- Evaluation: NNUE (Classical + Neural)
- Tablebases: 7-Piece Syzygy Integrated
- Book: Cerebellum3Merge (Master Theory)
Total Victories
Win Rate
Engine Depth
Avg. Move Time
π Competitive Standing
| Category | Rating | Global Bot Rank |
|---|---|---|
| π Bullet | 2700+ | Top 50? |
| β‘ Blitz | 2750+ | Top 30? |
| π Rapid | 2750+ | Top 30? |
| ποΈ Classical | 2750+ | Top 30? |
Elite Performance
Oxydan ranks among the top 0.2% of Lichess in Bullet, Blitz and Rapid categories.
π§ Deep Technical Analysis
1. The Neural Network (NNUE) Implementation
Unlike traditional engines that use human-written evaluation terms, Oxydan's v7 core employs Neural Network evaluation. This allows the engine to "see" complex positional advantages that cannot be coded manually. The network has been trained on billions of positions, resulting in a 2800+ ELO performance on standard hardware.
2. Opening Theory: The Cerebellum Advantage
Oxydan makes use of the Cerebellum3Merge opening book. This is a highly curated library where moves are weighted by winning probability (W: 255). By offloading the opening phase to a pre-compiled library, the engine saves critical CPU cycles for middle-game calculations.
3. Infrastructure: Cloud-Powered Logic
Running on GitHub Actions infrastructure, Oxydan benefits from high-speed CPU cycles and low-latency API connections. Our Matchmaker Logic is designed with Exponential Backoff, ensuring 100% uptime even when facing Lichess Rate Limits (HTTP 429).
4. Endgame Perfection
When the board reaches 6 pieces or fewer, Oxydan ceases to "calculate" and begins to "know". By probing Syzygy Tablebases, the engine finds the mathematically absolute path to victory (or draw) with zero margin for error.
π License & Attribution
Ethereal is a UCI-compliant chess engine operating under the GPLv3 license, originally developed by Andrew Grant. Oxydan v7 respects and carries forward this open-source heritage. Special thanks to the Computer Chess Community and the authors of Ethereal, Stockfish, and Fathom for their contributions to the field. The Cerebellum3Merge opening library used in this project is based on the groundbreaking work of Thomas Zipproth, providing a world-class theoretical foundation for our engine.