When to.....

Ever wonder when you should be doing ______?

I do. I have a terrible time knowing when to start teching up.

I typically start with 4 gate and get some units up. once 8-12 units are up I begin pushing out. I poke in, see if those initial units are still their, if not I know hes teching up and wont have many units. Thats a clear sign for me to do one of two things. Expand or drop 1 of 4 tech buildings, a Forge, Robotics Facility, Stargate, or Twilight Council. Lets assume I am up against a Terran player. I tend to Expand because it is relatively safe if my army is outside his base and preventing him from moving out. With only  half a dozen marines at his cliffs, that tells me hes either going for some tanks, or Banshees. More than likely its Banshees.

Do I drop a Robotics Facility down instead of expanding?

No, I still will expand, because getting that 2nd base up and going while preventing him from getting his is so important. I'm now in a position to know what hes probably doing, and I have now limited his choices. He can either continue with Banshees and get cloak and probably hold his ramp off if I decide to push in again, or make some more ground forces to push me back. Both are perfectly reasonable. Most players I have faced tend to continue with their Banshees and get cloak. Its important to poke up his ramp to see whats their, as if some Marauders suddenly pop up, I know hes looking to buy time before cloak is ready and hes going to make a push a bit later with not only a force, but also Banshees.. That means I need to have dropped a Robotics Facility sometime after my Nexus gets placed.

See how important Scouting is? I began scouting more frequently and accurately because I primarily play in a reactionary way to my opponent. Because I do this, I need to be knowing what my opponent is doing pretty often. If I see some heavy Marauder play I need to grab an Immortal or a lot of Stalkers ASAP. An observer would also help as well as these provide a way of keeping track of your opponent without having to sacrifice the occasional probe up his ramp.

So what things do you wait for either in your build order, unit count, or what your opponent does to justify teching up?

How to: 3 Gate, Robo Opening

Ive recently been addicted to this build. I had been using the typical 4 gate opening when playing however I was encountering a problem of when to stop building units and expand. It was also difficult to choose what to transition into. I like grabbing a Twilight Council for Charge however, as I have discovered, having an army consisting mainly of Zealots and Stalkers will get you no where fast if your opponent is grabbing some higher tech.

I started opting for a Robotics Facility instead of a 4th Gateway, this opened up a wide range of possibilities. I can now get a substantial army out quickly and be able to fend off early Stalker, Roach, or Marauders. I usually go for 3 gateway units and 1 Immortal to start off, but this is a quick drain on my resources and 1 base is not enough to support the constant production of said units. So when the gateways are ready for another round, I quickly warp in 3 more and grab an Observer. I should have barely enough for another Immortal and 2-3 Gateway units and then I stop producing and begin expanding. If I don't have enough or I am getting some constant pressure from my enemy, I will keep making Warp Gate units, but only those units, this allows my money reserve to fill so I don't have to stop unit production to Expand.

My unit composition tends to be an equal mix of Zealots and Stalkers and maybe a sentry to use my Warp Gate charge. Early on Zealots are nothing more than meat shields and against Terrans they can absorb a lot of that Marauder and Marine fire.

Now for the next step, applying pressure. I do this for two reasons:

1. I need to expand, what better time than poking into there base?

2. I need to see what unit composition they have.

If they are going for mostly marines, I need to warp in more zealots and drop a Twilight Council down and grab Charge. This will also open up High Templars, which eat Marines for Lunch, or teching into Robo Bay for Colossus. If they go Mass Vikings or Mutas? Warp in some stalkers. Heavy Marauder push? More Immortals.

Once the expansion is down I grab the 2 gas geysers. From this point on, Protoss are very gas heavy so having that extra gas will be useful, if not immediately, then later on. I then transfer probes and begin warping in and training more units. Getting another 3 Gateways, Teching up or dropping a Forge down to get some upgrades going. All these are viable options. The forge is more important as now that you can produce more units and having them deal more damage and take less is super valuable. Just make sure that all your resources are going into producing more units and Pylons as at this point, you will probably have more minerals than you know what to do with.

This build helps me keep a relatively safe position while feeling safe to expand, and I am able to get units up fast while steadily moving up the tech tree.

I have several problems I am curious to know how to handle properly. Early Aggression and when to expand. With the way I'm doing it now, I can get the expansion up around 70 food. Is this too much? I know a lot of people expand around 50, but I feel a little vulnerable. I bet if I tried to make an earlier push, I wouldn't feel so vulnerable.

The most important factor in all this? Play with a real person in some practice matches. You learn more from 1 game against a human than you do in 10 games against the AI.