is it possible to double knight checkmate?

is it possible??

anyone know??

i don't know

Possible?  Yes.

Forced?  No.

2

Only as a selfmate. K+ 2 knights cannot force a mate.

SELFMATE: black assists white into mating black.

or

Yes, as noted, 2 Knights can't force checkmate. Surprisingly, 2 Knights might be able to force checkmate if the opponent has one pawn advanced to specific locations. Lookup Troitsky Line. Although sometimes possible, a lot of precise technique is required to convert. 

this is how knights do checkmate

what you need to use is 3 knights to checkmate

As stated above two Knights can often force the checkmate if the enemy has a pawn. The point is that the pawn makes it possible to 'stalemate' the King before the mate.