https://en.wikipedia.org/wiki/Left_SR_uprising
The anti-bolshevik Left S.R. uprising in Moscow, or something similar to it, succeeds, and Moscow and Petrograd become the centers of two competing left-wing power structures. (or we switch it up and the Bolsheviks end up in charge of Moscow and their left-wing opponents with Petrograd)
Kolchak and Denikin fail to reach an understanding, and the Ukrainian anarchists maintain their independence.
Long story short, no faction is capable of reaching critical mass and overpowering the others.
Could such a situation result in a sort of stalemate, with only sporadic clashes along the 'borders' ?
If so, what kind of consequences are we looking at?