force fields.

I real alot on the beta forums that force field is op and I think this is total bull it has counters. Roach burrow movement and ventral sacs are two. mutas, brood lords, nydus worm, transports of all kinds, siege tanks, vikings, nukes, banshees BCs, VRs, carriers, infested terran ect... Heaven forbid a spell forces people to micro. The spell can also backfire because it prevents zealots from attacking anything on the other side. Heres a tactic to use if they block a ramp with it how bout a drop. alot of zerg complain about it so heres what you do you get ventral sacs and trop a force into the enemy base and hide them with burrow while you bring in a worm if the enemy finds the worm you unburrow and protect the worm 20 seconds later you have a beach head and can now funnel units past the choke right into their production.

The argument you make that force field isn't OP is a defiantly a debatable one. However I'm going to overlook it and ask how the hell did you come up with nydus worm and ventral sacs as a direct counter to force field? That's like saying banelings are a good counter to brak wall ins. Sure they'll get threw there eventually if you through enough of them at the wall but it's just not practical.

if you cant go through the forcefield then you go over it and nydus like forcefield dictates where the enemy has to fight. I saw a ZvP once and the zerg was completely shut down because of a forcefield at his ramp if he had invested in roach burrow movement or venteral sacks he could have bypassed the FF and saved his expansion and possible launched an imeadiate counter attack. I see alot of replays with zerg just having their overlords just sit there. maybe a handful to scout and become overseers. Forcefield is a move that limits mobility and venteral sacs and nydus are moves that drastically increase mobility.

Oh I see, you're making the argument force field isn't OP when it comes to base wall offs I thought the general argument was that it is OP when it is use in a fight where the protos uses it just shove the enemy around and basically chose who he is going to fight and where.

Force Field has so many uses. It is definitely OP in my book.

You can use it for basically everything. Hell I'm waiting for someone to think of a way to use it that disrupts economy (well you can if you force field someone's minerals).

Offense - Stop enemy melee units in their tracks. Stop enemy reinforcements when fighting at nat.

Defense - Block your ramp to get a few more units out. Stop an early zealot or ling rush.

Tactical - Stop ranged units from attacking. Force them to run around.

Psi Storm - More exposure if units have to run through a choke and back.

like Marauders. Emp is a spell that counters an entire race and that could be considered op. I think its because people use blob armies and in a blob on blob fight the forcefield will rule. People need to start using other tactics besides the blob. Emp should be an effective counter to sentries siege tanks will totall decimate in an FF situation. Fungal growth stops melle fighters in their tracks, prevents harass revieals cloacked and burrowed units so it has offensive, defensive and tactical uses too. infested terrans can be used for almost anything. Boosting the dps of your army, emergency anti air, harassment, being a meatshield not to mention that they do more dps that roaches. the toss has to use it because they are almost always out numbered. The zerg have burrow. ya its expensive and takes forever to get but it opens up a multitude of tactical options the zerg dont have with out it.

Every race has one or more spells which can completly change the outcome of a battle. The reason why most complains are about Force Field and EMP is because both spells are available very early during a game (Sentry is T1.5, Ghost is T1.5-2), while relatively few games take long enough that spells like Seeker Missle or Neural Parasite comes into play.
From my point of understanding Protoss units are weaker resources-wise compared to the units of the two other races but stronger per square an unit occupies; this implies that Protoss loses while fighting in an open field, but wins on choke points. To compensate this weakness Protoss has Force Field, which effectively creates temporary choke points.
Imo Force Field is fine in the early and mid game because it allows Protoss to play aggressively relatively early, but becomes too powerful when you can have plenty of Sentrys around so you're not only able to create temporary choke points but completly block off units even on open space.

A possible fix could be (presuming FF has a radius of 2, not sure) to disallow placement of another FF within a radius of 3 as long as the first FF is still active; meaning between two FF will always be at least one free square where units can walk through. This change will have the following consequences:
1. Greater punishment for bady placed FF: E.g. if your first FF don't block off a small ramp completly you cannot simply invest additional 50 energy to block the ramp with an additional FF but you have to deal with that the ramp isn't completly blocked off the next 15 seconds.
2. Infinite ramp block harder to pull off: Because you have to recast FF the second it runs out instead of recasting it a few seconds before it would have ended.
3. Unable to seperate armies and kill them one after the other: Because they is still a small passage between two FF you can still engage or flee, but on a slower rate than without FF.

Force-fields are powerful, but you have to remember what casts them; Sentries.

Sentries have incredibly low HP/cost (most Protoss units have low HP/cost). This coupled with the fact that they only have a range of 5 means, without proper micro, they will be in the front line of your ranged units (Immortals beside them, Sentries and even un-upgraded Colossus behind them).

Land Units that outrange Sentries (to take them down when they cast FF, or to take them down from behind a FF wall):
- Marine, Marauder, Ghost, Hellion, Siege Tank, Thor
- Hydralisk, Infestor

Infestors can even fungal growth an upgraded Colossus (+ any units near it) at the Colossus' max range. Add in Banshees or late tech like Brood Lords and the FF becomes little more than a nuisance.

The only race that is really outmatched by FF is T1 Zerg. Otherwise good micro can beat good FF micro.

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Originally Posted by DesertRose

2. Infinite ramp block harder to pull off: Because you have to recast FF the second it runs out instead of recasting it a few seconds before it would have ended.

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Why would you constantly block the ramp off anyways (unless you're trying to deny high-ground sight to siege tanks)?

After 1 block off you should have a few troops (Stalker/Sentry preferably if the opponent is using ranged) and if they are foolish enough to run headlong into the ramp you can cut off the first handful of troops with your 2nd FF. If they keep running towards your base, away from their support behind the FF you can pick them off, and if they stay near the FF you can try to pick some off (or lure them) with your ranged reinforcements.

If someone keeps walling off with Sentries use the same techniques you use to get behind Terran walls (other than direct attacks):
- Mutalisk / Banshee / Void Ray
- Brood Lord / Siege tank / Colossus
- Overlord / Medivac / Warp Prism death-drops
- Nydas worms
- Let the FF player contain (his/her)self; expand and beat him/her economically until you have Brood Lords / Siege tanks / Colossi

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saw a ZvP once and the zerg was completely shut down because of a forcefield at his ramp if he had invested in roach burrow movement or venteral sacks he could have bypassed the FF and saved his expansion and possible launched an imeadiate counter attack.

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Overlord drop and Roach burrowed movement both cost 250/250 and a fairly long time to research. They also both require a Lair. Sentries come for free with FF, and they come well before your Lair is finished.

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Land Units that outrange Sentries (to take them down when they cast FF, or to take them down from behind a FF wall):
- Marine, Marauder, Ghost, Hellion, Siege Tank, Thor
- Hydralisk, Infestor

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You're assuming that the Sentry is sitting directly behind their FF, rather than well out of range. You also forget that FFs can cut an army in half, allowing you to attack half of it with the other having stuck too far away to help.

Also, for the Zerg, Lair tech.

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Why would you constantly block the ramp off anyways (unless you're trying to deny high-ground sight to siege tanks)?

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He's talking about blocking off your ramp. This either:

1: Keeps you entirely contained unless you tech for air.

2: Keeps your army on high ground (ie: units you're producing now) from reaching your low ground army. No reinforcements means that your strength is split.

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Originally Posted by Nicol Bolas

Overlord drop and Roach burrowed movement both cost 250/250 and a fairly long time to research.

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They're both cheaper than you think :p. Tunneling Claws is 150/150 and Ventral Sacs is 200/200 :p.

That said, they are still rather expensive :[.

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Originally Posted by Nicol Bolas

Overlord drop and Roach burrowed movement both cost 250/250 and a fairly long time to research. They also both require a Lair. Sentries come for free with FF, and they come well before your Lair is finished.

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Since we are talking early game here and apparently at your base since if he force fields his own ramp then he just gave you map control, you shouldnt worry much about FF. You have the ridiculously strong pokers of doom as a good base defense that can easily hold zeal/sentry if you have some lings. If we are getting into the midgame you should be lair tech anyway and work on getting at least one of the upgrades or be using mutas.

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You're assuming that the Sentry is sitting directly behind their FF, rather than well out of range. You also forget that FFs can cut an army in half, allowing you to attack half of it with the other having stuck too far away to help.

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The number of times that you can actually cut an army in half are pretty small. It requires both the enemy to have poor unit positioning AND proper terrain.

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Also, for the Zerg, Lair tech.

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Why do you keep bringing up lair tech? You mean to say the zerg has to actually upgrade to different tiers as the game progresses?! GASP, something is clearly wrong since zergling/roach cant win every game!

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He's talking about blocking off your ramp. This either:

1: Keeps you entirely contained unless you tech for air.

2: Keeps your army on high ground (ie: units you're producing now) from reaching your low ground army. No reinforcements means that your strength is split.

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This is why you keep your army and have an entry base defense at your expansion. If he has enough units to take out your expansion after beating your army/defenses at your expansion, the odds are not too great that the 1 hatchery in your main will provide enough support to save it.

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Originally Posted by Nicol Bolas

Overlord drop and Roach burrowed movement both cost 250/250 and a fairly long time to research. They also both require a Lair. Sentries come for free with FF, and they come well before your Lair is finished.



You're assuming that the Sentry is sitting directly behind their FF, rather than well out of range. You also forget that FFs can cut an army in half, allowing you to attack half of it with the other having stuck too far away to help.

Also, for the Zerg, Lair tech.



He's talking about blocking off your ramp. This either:

1: Keeps you entirely contained unless you tech for air.

2: Keeps your army on high ground (ie: units you're producing now) from reaching your low ground army. No reinforcements means that your strength is split.

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you dont have to research neural parasite. Immortals and collosi do a protoss no good if you have them. Fungal growth will make zealots, dark templar, pheonix and upgraded Viodrays free kills if you have the hydras to back it up. Fungal growth also works kinda liek force field as it forces units to try and path around each other and you can even block a choke with it.

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Originally Posted by Nicol Bolas

You're assuming that the Sentry is sitting directly behind their FF, rather than well out of range.

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Well; out of range = 0 damage = useless waste of Supply and resources (as far as winning a battle is concerned). To get a strong number of FF out you need quite a few Sentries. Cutting your army in half by running your Sentries away = you've basically given your opponent a favorable FF.

The ONLY reason not to keep Sentries nearby is if you are running away. If you’re running away you probably won’t FF the same choke again and again.

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Originally Posted by Nicol Bolas

He's talking about blocking off your ramp. This either:

1: Keeps you entirely contained unless you tech for air.

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Use siege units (Brood Lords / Tanks / Colossi). It is very easy for Terran/Protoss to tech to their siege units by the time you're losing your natural expansion.

For T1 Zerg, Spine Crawlers help immensely (high ground + Range 7; 25 damage +5 v Stalkers; 300HP 2 Armor). Move/build 2-3 at your main base choke and you can easily fend off someone trying to abuse FF.

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Originally Posted by Nicol Bolas

He's talking about blocking off your ramp. This either:

2: Keeps your army on high ground (ie: units you're producing now) from reaching your low ground army. No reinforcements means that your strength is split.

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[sarcasm] Yes, (s)he gives you the High Ground and takes away his/her ability to walk up the ramp for easy sight. Without sight your Ranged units can easily pick the Protoss player's units off. That's really annoying. [/sarcasm]

You should have your forces concentrated in every major battle. Either split them up to flank/pincer your opponent or keep your troops together. Most mains have more than 1 entry point (destructible rocks) so move out that way if you can't afford drops.

If you've lost your only expansion AND your main army and your opponent still has a sizeable army... then you're already far behind and letting your expansion go (macroing up in your main base for a desperate defense) may be the best option. If you have more than 1 expansion you really should be at or beyond T2, in which case you should have an incredible amount of options (even non-air options) to break the FF contain (assuming you have the better army).

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Originally Posted by Phoenix

Well; out of range = 0 damage = useless waste of Supply and resources (as far as winning a battle is concerned). To get a strong number of FF out you need quite a few Sentries. Cutting your army in half by running your Sentries away = you've basically given your opponent a favorable FF.

The ONLY reason not to keep Sentries nearby is if you are running away. If you’re running away you probably won’t FF the same choke again and again.






Range 5 = Sentries should have to suicide to put up a FF (against any of the ranged ground units I mentioned); unless you're T1 Zerg. Beyond that; use siege units (Brood Lords / Tanks / Colossi).

For T1 Zerg, Spine Crawlers help immensely (high ground + Range 7; 25 damage +5 v Stalkers; 300HP 2 Armor). Move/build 2-3 at your main base choke and you can easily fend off someone trying to abuse FF.




[sarcasm] Yes, (s)he gives you the High Ground and takes away his/her ability to walk up the ramp for easy sight. Without sight your Ranged units can easily pick the Protoss player's units off. That's really annoying. [/sarcasm]

You should have your forces concentrated in every major battle. Either split them up to flank/pincer your opponent or keep your troops together. Most mains have more than 1 entry point (destructible rocks) so move out that way if you can't afford drops.

If you've lost your only expansion AND your main army and your opponent still has a sizeable army... then you're already far behind and letting your expansion go (macroing up in your main base for a desperate defense) may be the best option. If you have more than 1 expansion you really should be at or beyond T2, in which case you should have an incredible amount of options (even non-air options) to break the FF contain (assuming you have the better army).

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finally some one that talks sence. A zerg shouldnt have all his forces in one place. He should be expanding and attacking undefended targets while ambushing and flanking the enemy army. your wrath should be quick But all I see is zerg just mass units A and B and attack and thats just asking to have your forces cut in half.

Just like emp counters protoss army, the guardian shield from the sentry affects the entire terran army. Every terran unit is ranged (except scv). If you are good at microing, prottoss can have a constant +2 armor vs any terran enemy. And thats a lot of FREE armor.

The notion that FF is OP is ridiculous to begin with!

WTF?

FF is the only survival tool in early PvZ and PvP. Without it one cannot tech nor can one readily defend a choke. SC1 had a lot of the zergling run-by's if one tried to tech and only had one zealot at the ramp while trying a rush tech. With FF one can! AND since zerg is so much more efficient now with SL to help boost ling numbers, FF is primordial in defense for Protoss.

Without FF there is no Protoss in PvZ...

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Originally Posted by KadajSouba

Just like emp counters protoss army, the guardian shield from the sentry affects the entire terran army. Every terran unit is ranged (except scv). If you are good at microing, prottoss can have a constant +2 armor vs any terran enemy. And thats a lot of FREE armor.

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Theoretically. Correct.

In practice, your GS does not last long enough as you need energy for FF as well. So, GS helps, but only shortly. And in PvT, massing sentries is really not that great of an idea, unless you can afford the gas (form a hidden expo or something).

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Originally Posted by protoswarrior

The notion that FF is OP is ridiculous to begin with!

WTF?

FF is the only survival tool in early PvZ and PvP. Without it one cannot tech nor can one readily defend a choke. SC1 had a lot of the zergling run-by's if one tried to tech and only had one zealot at the ramp while trying a rush tech. With FF one can! AND since zerg is so much more efficient now with SL to help boost ling numbers, FF is primordial in defense for Protoss.

Without FF there is no Protoss in PvZ...

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exactly. with spawn larva the zerg can drastically out produce toss. Ya toss has chrono boost but they can still only produce on unit at a time per gateway, robo fac, stargate. A good zerg player can make 14 zerglings at once from one SL. Forcfield is a means for toss to counter the mass production the zerg and terran are cappable of. People that say that Its OP should try playing toss and they will realized just how much they need it.

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They're both cheaper than you think . Tunneling Claws is 150/150 and Ventral Sacs is 200/200 .

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Tunneling Claws are utterly useless without Burrow, a 100/100 upgrade. Ventral Sacs are virtually useless without Overlord speed, a 50/50 upgrade.

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You have the ridiculously strong pokers of doom as a good base defense that can easily hold zeal/sentry if you have some lings.

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You've obviously never seen or executed an Immortal timing push.

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The number of times that you can actually cut an army in half are pretty small. It requires both the enemy to have poor unit positioning AND proper terrain.

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FFs are pretty big. And the "proper terrain" is everywhere in these maps. Kulas Ravine may as well be called "choke points everywhere!"

And FFs are cheap too; 50 energy per shot. Even if you're not cutting an army in half, you're taking up valuable space that their army cannot fill. That means their ranged army is much weaker than your ranged army.

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Why do you keep bringing up lair tech? You mean to say the zerg has to actually upgrade to different tiers as the game progresses?! GASP, something is clearly wrong since zergling/roach cant win every game!

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Because, unlike for Protoss, Lair tech requires both gas (Cores need no gas) and an extra building (Den, Pit, etc) before you can actually take advantage of it. The Lair's build time is far greater than that of the Core.

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This is why you keep your army and have an entry base defense at your expansion.

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Oh, you mean the expansion that I:

1: Don't have, because fast-expanding against a Protoss is insta-lose vs. early Zealot pressure followed by an Immortal timing push?

2: Have taken for some reason, but I now have 300 minerals less to spend on either Drones or units.

Oh, and even if you do take your expo, there's no reinforcing from your main, thanks to FF blocking your ramp.

Also, there tend to be choke points at your natural. The places where FF is at its strongest.

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Well; out of range = 0 damage = useless waste of Supply and resources (as far as winning a battle is concerned).

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Containing with infinite FFs isn't about wining a battle. It's about containing them.

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Use siege units (Brood Lords / Tanks / Colossi).

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Oh yeah, Brood Lords. Those are totally accessible early-game. Colossi are low enough teir to break the contain before your enemy double-expos. And Siege Tanks with Siege mode: you can get dozens of those out early game :rolleyes:

God, do you even play the game?

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For T1 Zerg, Spine Crawlers help immensely (high ground + Range 7; 25 damage +5 v Stalkers; 300HP 2 Armor). Move/build 2-3 at your main base choke and you can easily fend off someone trying to abuse FF.

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Then you're contained. You can't move out. You're stuck on one base while they're free to double expo. Your entire build timing is screwed up because you can't get out to expand.

This is called losing.

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Yes, (s)he gives you the High Ground and takes away his/her ability to walk up the ramp for easy sight. Without sight your Ranged units can easily pick the Protoss player's units off. That's really annoying.

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You keep forgetting this: the purpose of this is not to attack right now! The purpose of this tactic is to force you to one-base. To give him map control and the freedom to expand wherever he wants.

IE: the purpose of this tactic is to allow them to win later by slowing you down. It's the equivalent of Mutalisk harass, but it requires only a few hundred gas, transitions into whatever you want, and cannot be countered except by several, out-of-the-way tactics.

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A zerg shouldnt have all his forces in one place. He should be expanding and attacking undefended targets while ambushing and flanking the enemy army. your wrath should be quick But all I see is zerg just mass units A and B and attack and thats just asking to have your forces cut in half.

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Totally.

Wait. There are no "undefended targets". It's just them on two bases in their main. On many maps, you can even take a third and still have a single point of defense.

And there are no units suitable to ambush a Protoss army. Banelings don't do squat even to Zealots, let alone the armored Protoss units.

And the Zerg only have one unit fast enough to do flanking attacks: Zerglings. Small groups of Zerglings are quickly dispatched by their concentrated army. So it's really just throwing units away.

So in fact, this is a terrible idea.

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The notion that FF is OP is ridiculous to begin with!

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Without FF there is no Protoss in PvZ...

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Just because something is imbalanced doesn't mean it should be removed. A simple tweak is all that is necessary. Give it, say, 200 health. Maybe 150.

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A good zerg player can make 14 zerglings at once from one SL.

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Yeah. In the same time, a Protoss player can make 3 Zealots and a Probe.

The 3 Zealots will win the fight against 14 Zerglings, if they are in good position with decent micro. And the Protoss will be ahead economically, since the Zerg player didn't make a single Drone in that 40 second Spawn Larva cycle.

Totally fair :rolleyes:

Lol, Nicol, were you agreeing or disagreeing with me? I couldn't tell :p

I definitely don't think FF should be removed, I'm for it to stay, lol!

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Originally Posted by Nicol Bolas

You've obviously never seen or executed an Immortal timing push.

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Have you? Can you provide a demonstration where this immortal timing push isnt overrun by zerglings or mutalisks or hydras?

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FFs are pretty big. And the "proper terrain" is everywhere in these maps. Kulas Ravine may as well be called "choke points everywhere!"

And FFs are cheap too; 50 energy per shot. Even if you're not cutting an army in half, you're taking up valuable space that their army cannot fill. That means their ranged army is much weaker than your ranged army.

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Again, positioning changes a lot and using FF can often mean they cant use gshield. If they misplace the FF you can just back off. If they put it too far back, you have nothing to worry about. You are giving examples of pristine FF usage that can be equated to jaedong microing 3 groups of mutalisks perfectly to harass in BW. Its entirely unrealistic to think that it will happen every time.

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Because, unlike for Protoss, Lair tech requires both gas (Cores need no gas) and an extra building (Den, Pit, etc) before you can actually take advantage of it. The Lair's build time is far greater than that of the Core.

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Because, unlike for zerg, protoss has to build more than 1 to produce more than 1 unit at a time. A zerg can pump out 6-7 units from any tech with the addition of a single building.

You cant directly compare things like that. The closest comparison to the core is a roach warren, not a lair anyway.

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Oh, you mean the expansion that I:

1: Don't have, because fast-expanding against a Protoss is insta-lose vs. early Zealot pressure followed by an Immortal timing push?

2: Have taken for some reason, but I now have 300 minerals less to spend on either Drones or units.

Oh, and even if you do take your expo, there's no reinforcing from your main, thanks to FF blocking your ramp.

Also, there tend to be choke points at your natural. The places where FF is at its strongest.

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1) This obviously explains why many top zerg still FE against protoss. Wait, no it doesnt! Do you even play the game nicol or do you just theorycraft random what-if scenarios in which the protoss plays perfectly while the zerg plays horribly?
2) Then once the expansion is up you have the equivalent of 10+ production buildings with a queen.

Spine crawlers destroy sentries, which is partly why you build them. If you have spine crawlers, he is NOT FF blocking your ramp more than once.

Also, the choke points at your natural are there for YOUR OWN advantage, hes sitting in the choke while you have the wider area to surround. Its a defensive advantage not an offensive one, and its why they are there.

I seriously question your knowledge/ability to play the game based on your opinions stated here.

you should try some of the suggestions before you dismiss them as bad. Toss have a very hard time at fighting at two places at once And thats really easy for hte zerg to do.

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Originally Posted by Nicol Bolas

Because, unlike for Protoss, Lair tech requires both gas (Cores need no gas)

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That's a pointless argument. If the Protoss player doesn't mine any gas, then they have 0 Sentries. 0 Sentries = 0 Force-fields. 0 FF = 0 FF problem.

Sentries cost 50 minerals and 100 gas, each. You cannot spend 100 gas to make a Sentry without... getting gas.
Lair = 100 gas = same exact gas cost of 1 (ONLY 1) Sentry.

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Originally Posted by Nicol Bolas

and an extra building (Den, Pit, etc) before you can actually take advantage of it. The Lair's build time is far greater than that of the Core.

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Time:
- Pylon (25t), Gateway (65t), Cyber Core (50t), Sentry (42t) = 182t
- Spawning Pool (65t), Roach Warren (55t), Roach (27t) = 147t
- Spawning Pool (65t), Lair (80t), Hydralisk Den (40t), Hydralisk (33t) = 218t

Roaches only require 350 Minerals to tech to, Sentries require 400 Minerals to tech to.

6 Sentries are needed to block off a 1 FF wide choke (with perfect timing). Many maps have more than 1 choke on the main base (destructible rock back door) or have ramps that are larger than 1 FF wide (which means you'd need even more than 6 Sentries to contain someone).

Hydralisks, Overlords with Ventral Sacs, Building a Nydas Network to another expansion (not your natural) with Overlord sight... all are easy enough. You never see high level Platinum players trying to contain someone with mere force-fields; because it really doesn't work. Sure it helps when the Protoss player is already winning (ie. killed the enemy main army/natural expansion) but it is very easily countered.

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Originally Posted by Nicol Bolas

Oh yeah, Brood Lords. Those are totally accessible early-game. Colossi are low enough teir to break the contain before your enemy double-expos. And Siege Tanks with Siege mode: you can get dozens of those out early game :rolleyes:

God, do you even play the game?

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I find it amusing that I said:

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Originally Posted by Phoenix

If someone keeps walling off with Sentries use the same techniques you use to get behind Terran walls (other than direct attacks):
- Mutalisk / Banshee / Void Ray
- Brood Lord / Siege tank / Colossus
- Overlord / Medivac / Warp Prism death-drops
- Nydas worms

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... and you only commented on Brood Lords. I was trying to think of every strong counter to a FF contain, not just the easy ones.

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Originally Posted by Nicol Bolas

Colossi are low enough teir to break the contain before your enemy double-expos

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One Base Colossus (from Liquipedia): A Platinum level build order (against Terran usually)

9 Pylon (1)
13 Gateway (1)
14 Assimilator (1)
16 Pylon (2)
18 Cybernetics Core
19 Assimilator (2)
20 Robotics Facility
21 Stalker
24 Gateway (2)
24 Pylon (3, at choke/ramp)
24 Research: Warp Gate - Chronoboosted
25 Observer
27 Robotics Bay

27 Supply and you're ready for Colossi & the upgrade = early game
That's not even an all-in rush to Colossus tech.

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Originally Posted by Nicol Bolas

Siege Tanks with Siege mode: you can get dozens of those out early game

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Siege Expand (from Liquipedia): A Platinum level build order (against Terran usually)

10 Supply Depot
12 Barracks
13 Refinery (3 on gas upon completion)
14 Scout
16 Orbital Command + Marine
17 Marine
18 Supply Depot
xx Factory (first 100 gas)
xx Tech Lab on Barracks (next gas)
xx 2nd Refinery
xx Swap Barracks and Factory
xx Siege Tank
xx Siege Mode
xx Command Centre
xx (StarPort)

... and you don't need dozens, you need one. One siege tank (safely in your base) will force the enemy to move past your choke to attack or back off completely. Build a Missile Turret and you can even deny high ground sight from the Observer letting you place the tank on the edge of your high ground without fear of it being sniped.