Video that shows you how to beat 4 Very Hard AI on a 1 vs 4 Multiplayer Custom Game.
You should pick the map Megaton. Chose to be protoss. In this video, the opponents were two protoss and two terran.
Basically, it’s a cannon rush. But you can’t just enter the enemy base and build your pylon. In new patches, workers are smarter, and they will stop your rush. You must build the pylon at the bottom of the ramp. Try to place your buildings in the same place as shown in this video.
This replay was recorded on patch 1.4.3.