testsAndMisc-archive/python_pkg/stockfish_analysis/README.md

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# Chess move analysis with Stockfish
This utility parses a PGN (or a log that contains a PGN section) and evaluates each move with a local Stockfish engine, printing a per-move quality rating.
## Install
Install python dependencies:
```
pip install -r PYTHON/stockfish_analysis/requirements.txt
```
Ensure Stockfish is installed and available in your PATH (or provide the path via `--engine`). On Linux, you can typically install with your package manager or download a binary.
## Run
From the repo root:
```
python3 PYTHON/analyze_chess_game.py lichess_bot_game_8GSdY3Ci.log
```
Options:
- `--engine /path/to/stockfish` to specify a custom engine path
- `--time 0.2` seconds per evaluation (default)
- `--depth 12` fixed depth instead of time
The script prints a table with, for each ply:
- side to move, SAN move, eval before/after from mover's POV, delta, classification, and Stockfish best move suggestion.