Backgammon Program: TD Gammon

TD Gammon, written by Gerry Tesauro (, gerry on FIBS) of IBM, was the first neural net backgammon program and is still one of the strongest computer players. A version of TD Gammon plays on FIBS as TD_one; the original FIBS incarnation was called tesauro.

TD Gammon is available free for OS/2 only; the zip file can be downloaded.

There are several accounts of TD Gammon's history and groundbreaking application of temporal difference (hence 'TD') learning in game programs. Probably the best is on Jay Scott's site.

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