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Data can be obtained from PGN files using specialized chess software or programming languages capable of reading and processing PGN files. Here are the steps to obtain data from PGN files using chess software:

1. Open the PGN file in a chess software program that can read PGN files. Examples include ChessBase, SCID, and ChessX.
2. Once the PGN file is loaded, you can easily navigate through the games by clicking on the game headers.
3. The software program may allow you to analyze the games using various chess engines or tools. You can analyze moves, explore variations, and evaluate various positions.
4. The software may also allow you to export the game data in various formats, such as CSV or Excel.

If you want to obtain data from PGN files programmatically, you can use programming languages such as Python, Java, or C# to read and process the PGN file data. Specific libraries, such as python-chess for Python, provide convenient functions to read, write, and analyze PGN files.