This is the opening BO i always use, its similar to the 9pool speedling BO from the first starcraft
10-pool(scout with 10th drone)
10-extractor
10-ovi
<stop making drones form this point on>
The pool and ovi should finish at almost the same time. You should have 3 larvae which you'll turn into zerglings. When your gas reaches 92, pull your drones as soon as it gives it's gas, as such that you'll gas will be exactly 100. by this time you should have enough minerals for either a queen or the speedling upgrade. I prefer going for the queen first then the upgrade. I would then just spam zerglings and spawn larvae skill. Haven't tried expanding or teching to lair. AI always loses when I use this BO =P.
You can also going for lair directly instead of the speedling upgrade and do some sort of muta + zergling BO, but i haven't tried that out yet =P
10-pool(scout with 10th drone)
10-extractor
10-ovi
<stop making drones form this point on>
The pool and ovi should finish at almost the same time. You should have 3 larvae which you'll turn into zerglings. When your gas reaches 92, pull your drones as soon as it gives it's gas, as such that you'll gas will be exactly 100. by this time you should have enough minerals for either a queen or the speedling upgrade. I prefer going for the queen first then the upgrade. I would then just spam zerglings and spawn larvae skill. Haven't tried expanding or teching to lair. AI always loses when I use this BO =P.
You can also going for lair directly instead of the speedling upgrade and do some sort of muta + zergling BO, but i haven't tried that out yet =P