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README.md

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-license: mit
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+# Chess Positions with Stockfish Evaluations
+
+This dataset contains a collection of chess positions in Forsyth-Edwards Notation (FEN), each paired with a corresponding evaluation from the Stockfish chess engine. It is designed for use in training machine learning models for chess, analyzing chess positions, or for any application requiring a large set of evaluated positions.
+
+## Data Format
+
+The data is stored in a simple CSV (Comma-Separated Values) format without a header row. Each line in the file represents a single chess position and its evaluation.
+
+The format is as follows:
+`"FEN_string",evaluation`
+
+### Fields
+
+| Field       | Description                                                                                                                                                                                                                         |
+|-------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `FEN_string`| A standard FEN string representing a specific board state. This includes piece placement, active color, castling availability, en passant target square, halfmove clock, and fullmove number. [Learn more about FEN](https://en.wikipedia.org/wiki/Forsyth%E2%80%93Edwards_Notation). |
+| `evaluation`| The Stockfish engine's evaluation of the position in centipawns. <br> - A positive value (`+110`) indicates an advantage for White. <br> - A negative value (`-95`) indicates an advantage for Black. <br> - A value near zero suggests a balanced position. <br> - Mate-in-N is represented as `#N` (e.g., `#3` for mate in 3 for the side to move) or `#-N` (e.g., `#-2` if the side to move is being mated in 2). |
+
+### Example Data
+
+```csv
+"rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",+25
+"r1bqkbnr/pp1ppppp/2n5/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3",+15
+"r4rk1/pp1n1ppp/2pbp3/q2n2B1/3PN3/3Q1N2/PPP2PPP/1K1R3R b - - 5 13",-80
+"4r1k1/pp1r1p1p/1qp1n1p1/4P3/3p1P2/2Q4P/PP1R2P1/3R2K1 w - - 0 29",#4
+```
+
+## How to Use
+
+Here is a basic Python script to read and parse the data from a file named `chess_data.csv`.
+
+```python
+import csv
+
+def load_chess_data(file_path='chess_data.csv'):
+    """
+    Loads and prints chess positions and their evaluations from the dataset.
+    """
+    positions = []
+    try:
+        with open(file_path, 'r', encoding='utf-8') as f:
+            reader = csv.reader(f)
+            for row in reader:
+                if not row:
+                    continue
+                fen_string = row[0]
+                evaluation = row[1]
+                positions.append({'fen': fen_string, 'eval': evaluation})
+                print(f"FEN: {fen_string}, Evaluation: {evaluation}")
+    except FileNotFoundError:
+        print(f"Error: The file {file_path} was not found.")
+    except IndexError:
+        print(f"Error: Malformed row found in {file_path}.")
+    
+    return positions
+
+if __name__ == '__main__':
+    # Assuming your data is in 'chess_data.csv'
+    chess_dataset = load_chess_data()
+    if chess_dataset:
+        print(f"
+Successfully loaded {len(chess_dataset)} positions.")
+
+```
+
+## Data Generation (Example)
+
+This dataset was generated using:
+*   **Engine**: Stockfish 16
+*   **Search**: 15 seconds per position
+*   **Source**: A curated list of positions from grandmaster games.
+
+## License
+
+This dataset is released under the [MIT License](https://opensource.org/licenses/MIT). You are free to use, modify, and distribute it for any purpose.