I have received alot of email from people asking how to power zergling rush and yet be able to go for hydras without falling behind in the resource and tech evolution.

I'm not going to go into a detailed overview of what the strategy can do or how to use it, so here it is plain and simple.

Build Order
Make drones until you have 8. With #8 drone, make spawning pool. Now make #8 drone again. Next make an overlord. Then make drone #9.

When overlord is finished, make drones #10-#12. When spawning pool is finished, make 3 zerglings. This will bring your unit count to 15. Take 1 drone and make extractor. Put one drone on gas and make an overlord. Keep making zerglings until you get 350 minerals.

Once you have 350, put down 2nd hatchery. Keep making zerglings out of the 1st hatchery and making drones out of the 2nd. As soon as you get 100 gas, upgrade zergling speed.

When you have 3 drones on gas and 2 drones per each mineral patch, start cranking zerglings out of both hatcheries. When you have the resources, put down your 3rd hatchery and 2 evolution chambers. Upgrade melee attack and carapace as soon as you have the resources. By now you should have attacked your opponent numerous times.

Make a hydralisk den and start making hydras out of the #3 hatchery. It is important to keep up the zergling production until you have amassed a large amount of hydras. Once you have started making hydras, upgrade one of your hatcheries to a lair. Now upgrade hydra speed and range and also get second upgrade on carapace and 1st upgrade on missle attack.

Put down a queen's nest and upgrade lair to hive. From here you have multiple options to choose from depending on your opponent.

This strat is most effective against zerg and protoss players. When playing against terran, I do not advise going with any kind of zergling rush.