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ChessBase is a personal, stand-alone chess database that has become the standard throughout the world. Everyone uses ChessBase, from the World Champion to the amateur next door. It is the program of choice for anyone who loves the game and wants to know more about it. Start your personal success story with ChessBase and enjoy the game even more.

Apple – Campfire Chess

How do chess engines have standardization input/output? Why is it that engines can be plugged into GUIs like Arena and do not require their own standalone program? - Quora

CD-ROM Aktief no 3 (2e jaargang 1995) : HUB BV : Free Download, Borrow, and Streaming : Internet Archive

Freeware against commercial chess software: Arena 3.5.1 vs Chessbase Fritz 17 - Chess Forums

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Free Software Supporter -- Issue 176, December 2022 — Free Software Foundation — Working together for free software

Freeware against commercial chess software: Arena 3.5.1 vs Chessbase Fritz 17 - Chess Forums

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ChessBase (Database) - Chessprogramming wiki