Forums  /  Super Mario series  /  Super Mario Bros. 3 Category Extensions  /  Co-op (2 players) mode SpeedRun with only one player?

Okey, I fell so stupid asking this, yeah, buuuuut… it is posible to run a Co-op run without any more, only 1 player? Or is needed to be proved that are 2 players playing?
Because I think would be going to have no sense if you can play alone in Co-op, and to run with one player a category for 2.
Ah, yes, and any% Co-op is easy free second position lol jaja XD