Campaign for North Africa is a war simulator board game infamous for having an estimated playtime of 1500 hours. It has supposedly never been played to completion, even by playtesters during the game's development. More info:
https://www.youtube.com/watch?v=1mSITkC_7p0

https://en.wikipedia.org/wiki/The_Campaign_for_North_Africa

https://boardgamegeek.com/boardgame/4815/the-campaign-for-north-africa-the-desert-war-1940

This resolves YES when the following conditions are meet:
-A full game of CfNA is played to completion, under a reasonable interpretation of the current ruleset

-The game must be documented such that it can be verified by outside observers

-The game is mostly (at least 80%) played by humans (by whatever definition of human is used at the time of resolution)

*This requirement refers to player decisions. Computer/other use to keep track of game variables does not count for this.
-Players do not quit, concede, or try to lose early or quickly

The game can be played using the physical board game pieces, with a computer, or whatever, as long as humans are the players.

This resolves NO if it becomes impossible for the above conditions to ever be fulfilled. Some examples of how this could happen:
-Humans go extinct, and it becomes impossible for them to ever be resurrected.

-The universe enters an infinite loop, in which it is known that a game of CfNA is never played.

-The CfNA ruleset is irrecoverably lost.

The close date should be extended as needed. I may bet on this market.