Hey my fellow Brotoss.
Lately I've been trying a new build against T that seems to work very effectively. It was inspired by Slayers_Alicia's build which he used to knock IMMvp down to Code A. Alicia used a 3gate sentry expand vs MVP, only he moved out to pressure with 5 sentries, not the usual 8-10, or even 12 in oGsMC's usual style.
This force must comprise of mostly zealots (as zealots + Guardian shield takes forever to kill). Your Stalker numbers really depend on what his unit composition will consist of: if it is pure marine, you can get away with 1 (or 2 if you're not as confident with your Force Field trapping because its easier to micro with Stalkers vs Marines than with Zealots). If he has some Marauders, you may want to push with 2-3, and still keep your primary force consisting of Zealots. The reason for that is that Marauders with concussive shells can prove very annoying, and having a ranged unit to counter his ranged unit will help a ton. If he is teching, (only a few units at the ramp, gets gas(ses) fast, etc) then you will want more Stalkers, because it could mean Hellions (roast your "Light" Sentries and Zealots), the 1-1-1 with tanks (which will be standing behind his other units, therefore you need a ranged unit to pick them off faster), or fast air (Medivacs or Banshees, in both cases you will want to have anti-air). The push ends when all your zealots are dead: retreat your Sentries and Stalkers to allow them to fight another day.
Now, where this build differs from Slayers_Alicia's version, is that I do this off of 1 gas geyser, instead of 2. The reason I chose to try this out was to have more mineral income, and therefore get a faster economic boost earlier on, at the cost of delaying my tech choice. In Alicia's version of the push, you use 2 gasses, warp in majority zealots, have a lot of gas stockpiled up and can react with the appropriate tech path to counter your opponent's next move. (Alicia's personal favourite was with DTs.) One thing I've found though, is that some Terrans will mule up and go for a quick timing push (if they went MM, they move with stim and possibly an upgrade; if they were teching, they will move out with a bunker+siege push, etc.) and if they time this right, they can kill you before your tech comes into play. Keep in mind, their MM ball timing attack will be stronger now due to the fact that you've burned most of your FF's with the initial push, and you've been spending your gas on tech, not more sentries.
I'll give you guys a simple illustration. With Alicia's version of the build, he will be going for fast DT, or colo, or whatever else. But colo without the range upgrade will get slaughtered by Terran's timing push with siege tanks, stimmed MM (esp without many forcefields left), or banshees. Building a DT shrine takes forever to build. Going VR will work if they've halted Marine production, but that's a far gamble, esp. if you hit him hard with Zealots.
Now with my version. After the attack, I retreat my Sentries and Stalkers and only then get all my gasses after retreating from the push (FOR UPGRADES!), throw up 3 more gateways, start the Nexus at my third. And THEN go for tech. (It's still smart to throw up a robo for an obs or to start colo tech asap. The difference between this opener and Alicia's is that you will have more Probes, a way faster third base, a bigger army to defend vs a timing push with, and much faster upgrades. And also, if you added in the robo like I recommended, you could do some pretty good damage with 1 or 2 warp prisms + 6 gates.
Now, the rough, unpolished build order:
(keep in mind that this build is not fully developed yet, as I'm still constantly tweaking it for improvement etc.)
11 Assimilator <-- This is how I pull off 3gate sentry without only 1 gas
.. (continue as you would with 3gate FE, but stay on 1 gas)
I use 2-3x chronoboost on WarpGate, and the rest on probes.
I'm still trying to figure out which works better, making zealots with your first warp round because zealots have the fastest cooldown rate and warp in sentries on the way to your opponent, or make sentries with your first warp round to mount up as much energy as possible, and then warp in zealots at a proxy location. Way 1 allows for more units faster, whereas Way 2 would possibly allow you a couple more FF's. Chronoboost timings on warpgates still has to be tested.
Please feel free to comment and question. I'm mostly on EU or KR server, but my NA ID is Tailz - 602, and I will be glad to talk about the build, have a partner for testing this out, etc.