What was the longest chess game in history? (hint: it was REAL long)

and the envelope please........................................................................

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The longest tournament chess game (in terms of moves) ever to be played was Nikolić vs. Arsović in 1989 and played in Belgrade, Serbia.

The marathon lasted for 269 moves and took 20 hours and 15 minutes to complete.  And after ALL that, nobody won!!!!!

If you've got some time on your hands...