Need some Trigger help

[M.v.L]

I'm currently working on a map,
that uses a simple life system (your life reaches 0 = you lose...)
My map can be played with 6 players max.
My question is:
If 5 players get defeated, will player 6 automatically win?
Or must I write an extra trigger for that??
And if I have to write an extra win trigger,
how do I tell the trigger to give victory to the last
player with lives?
Thanks allready,

M.v.L