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Chess.com Bot — With Evaluation Bar (Updated Stockfish) newer

Improved userscript: top 3 moves & threats, persistent settings, debounce/throttle, safer engine lifecycle, promotion handling, better board detection, min/max delay, and real-time evaluation bar. Now using updated Stockfish from a new resource.

Autor
thehackerclient
Dnevne instalacije
3
Ukupno instalacija
6
Ocene
0 0 0
Verzija
4.6 // Version incremented
Napravljeno
29. 09. 2025
Ažurirano
02. 10. 2025
Size
30,7 КБ
Licenca
MIT
Važi za

1. What this script does

This is for Chess.com that integrates Stockfish to analyze games in real-time. Key features:

Dynamic Time Management: Adjusts thinking time based on opening/middlegame/endgame.

Stockfish Settings: Configurable threads and hash.

Move Classification: Labels moves as Best, Excellent, Good, Mistake, Blunder, etc., using centipawn loss.

Highlighting: Shows top moves, threats, and PV (principal variation) visually on the board.

Auto-Move: Can move pieces automatically if enabled.

GUI: Provides a slider for depth, inputs for threads/hash, and buttons for reload/analyze.

2. Technical Strengths

Modern Stockfish Integration: Uses CDN for web worker—avoids local file dependency.

Robust board detection: Checks multiple selectors, works on standard and flipped boards.

Dynamic evaluation: Uses centipawn thresholds and mate detection for move classification.

Smart engine restart: Safely reloads Stockfish if threads/hash are changed.

Throttling/debouncing: Prevents excessive engine calls and ensures smooth performance.

Visual feedback: Highlights moves and threats for intuitive analysis.

3. Configurations

Threads = 4, Hash = 256 MB:

Threads: Uses 4 cores; fine for most modern quad-core CPUs.

Hash: 256 MB is enough for light to medium analysis but will recalc positions for very deep searches.

These values are safe for casual/medium analysis, but if you want longer deeper analysis, increasing hash (e.g., 1024 MB) would improve performance.

Depth = 18:

Reasonably deep; engines can calculate strong moves, especially for level 8–12 analysis.

Combined with Stockfish worker, this should be responsive.

Dynamic delays (1–3s):

Makes the bot look more human-like.

Shorter times for early moves, longer times for complex middlegame positions.