Learning SC2

Harassment is very exciting to watch in professional matches and can be great fun to emulate. Harassment is usually done to gain some sort of advantage through economic damage, disruption of production or by throwing off your opponent. While it seems like harassment would always be good sometimes you will do what seems like a lot of damage and still lose. There are a few things going on below the surface when top-tier players harass and there are some pitfalls to be aware of if you want your harassment to be effective.

Guaranteed Damage

The concept of guaranteed damage is important in harassment and even in normal attacks. You have probably noticed that when people harass they will try and kill workers, Pylons, Supply Depots or Overlords. The reasoning behind this seems kind of obvious, kill your opponents workers and they will be getting less income, kill their supply and they will become supply blocked. However, there is another level of reasoning at work here, guaranteed damage.

This Pylon is known as a 'critical Pylon' and it is a high priority target as it powers four structures.

Guaranteed damage simply means that you will be able to kill what you are trying to kill. If, for example, you drop a Medivac full or Marines in your Protoss opponents base you have a few choices and it may be tempting to go for the one with the biggest reward – the Nexus. However, it may take 30 seconds to kill the Nexus and in that time your units could be killed or repelled, leaving you with no damage done. If, you instead went for Probes or Pylons, which have much less health and are easier to kill, you will be almost guaranteed to do some damage before your opponent can defend.

It is essentially a question of risk vs reward, and you are always much safer going for an easier to obtain but smaller advantage then going for an unlikely to obtain but larger advantage. The following are a few examples of things to target when harassing with the concept of guaranteed damage in mind:

Vs. Protoss

• Probes – Economic damage and easy to kill.
• Pylons – Disrupts production by un-powering structures and affects supply cap. Single Pylons powering multiple buildings are high-priority targets.

Workers mining gas are a good target as killing them can delay your opponents tech and some people will forget to replace them.

Vs. Zerg

• Drones – Economic damage and easy to kill.
• Overlords – Affects supply, easy to kill before speed upgrade and can often be found outside the bases of carless Zergs.
• Queens – Slow if caught off Creep, relatively easy to kill and slows down unit production greatly due to missed Larva Injects.

Two Places at Once 

When harassing your opponent you never want to only attack one spot at a time. It is much easier for your opponent to defend, you are more likely to lose your units without doing any damage. A good example is sending a Medivac full of Hellions to attack your opponents main base. It is very easy for your opponent to pull back their army and kill off your attack before you have a chance to do any damage. If in that same scenario you sent Two Medivacs, one to the main and the other to the opponents third base your opponent may be able to easily defend one (simply retreat the attack that he tries to defend) but the other will go undefended. If instead your opponent splits his army and defends both Hellion drops they will be weak to a frontal assault. If they do neither then they will lose a lot of economy.

Another excellent way to incorporate multi-pronged harassments is to harass while attacking with you main army. While preoccupied with your frontal assault your harassment will likely go unnoticed and will cause a lot of damage. You can then simply retreat your main army and your harassment having doen the damage needed to secure a long-term victory.

Always be on the lookout for ways to spread your opponents resources thin, multi-pronged harassment will achieve this even if it does not actually do any damage. The threat of harassment can often be enough to secure you an advantage.

Frame by Frame example of a two pronged attack.

In the first frame the main army prepares to attack the opponents front while a Warp Prism full of Zealots prepares to drop at the east. In frame 2 the main army engages and the Warp Prism unloads in the mineral line. Having done the damage required to secure victory, the main army retreats in frame 3 to avoid unnecessary losses. Unfortunately the Warp Prism is destroyed preventing the Zealots from escaping but it was a worthwhile trade.

Takes the Opponents Focus

Good harassment will cause your opponent to make mistakes, to let their units get out position and to forget key parts of their build. The threat of harassment, like a Warp Prism sitting just outside their base can stress your opponent out or cause them to make more static defences then they would otherwise like to.

Doesn’t Put You Behind – Micro vs Macro

If your harassment taxes your own attention too much you will macro poorly and may even end up in a worse position than your opponent. Some harassment tactics require more micromanagement than others. Banshee harass and High Templar drops, for example, require a lot of attention and unless you are able to continue macro-ing whilst doing them they should be avoided by beginners. 

However, there is no reason to not apply the same tactics to simpler harassment tactics. For example, attacking the front with your main army while running a few units to an unguarded expansion can be very effective in lower leagues. 

Don’t Force it

The worst thing you can do is to overcommit to harassment. Don’t make harassment your main objective, and if your opponent is able to easily defend themselves then don’t try and force it. Each failed harassment attempt weakens your main army and makes you susceptible to a straight up attack. Incorporate harassment into your normal play while being aware of the above things and you will see a lot of success.

Have you had much success with harassment? Sometimes harassment tactics can seem very powerful and can win you games outright. But then there are other times when you appear to do a lot of damage but actually fall behind. Hopefully this article helps you understand some of the less-known aspects of the popular tactics.

Sun Tzu’s “The Art of War” has been read and interpreted throughout history by many different people for many different purposes. Occasionally, in between University, Work, Playing SC2 and writing about SC2 I find a little bit of time to read (on my lunch break at work if there are no new Dailies). Reading through one particular section of this book I couldn’t help but apply it’s lessons to SC2 because it was just so clearly relevant. In this particular section Sun Tzu states the best things a general can do in war in descending order.

“Thus the highest form of Generalship is to balk (destroy) the enemy’s plans.” – Sun Tzu

This is the moment when you cheer as Terran, an almost guaranteed victory!

To destroy your opponents plans is clearly the best thing you can do in Starcraft 2. Note that Sun Tzu says to destroy your enemies plans, not just to counter them. Generally, countering implies that you merely defend or survive – not really the best thing that you can do. But to destroy your opponent’s plans puts you in a dominating position in the match which is where you always want to be.

A good, but extreme example of destroying an opponent’s plans would be having your opponent’s 6-pool rush reach your base after you are completely walled in. Anyone who has been in this position will know that you are at a massive advantage at this point. You haven’t just countered your opponent’s plans, you have destroyed them. Even in less extreme examples having their plans destroyed will throw off all but the most experienced of players. It can be very hard to formulate a new plan mid-game, so take advantage of that.

You can achieve the destruction of your opponents plans in SC2 by scouting, covering your vulnerabilities (adequate detection, anti-air etc.), and by always being aware of what your opponent could do — this means having prior knowledge of the possibilities at any given point in the match. This type of knowledge comes with experience and research.

“The next best is to prevent the junction of the enemy’s forces.” – Sun Tzu

Pick off every undefended unit you can, this Probe is extra valuable because he is also holding a little gift of minerals.

If you fail to destroy your opponent’s plans or if your opponent plays straight up without any ‘tricks’ then this is your next best step. In war, cutting off your enemy’s supply lines or reinforcements would give you an obvious and great advantage. And it works much the same way in StarCraft 2. Simply, its all about not letting your opponent’s army reach its greatest potential strength.

You can achieve this by harassing your opponent, attacking and retreating (particularly against Zerg as it forces them to waste Larvae on defensive units) and by picking off all undefended units or structures. All of these things will weaken your opponents overall army strength as well as their resolve. Utilising highly mobile units (Blink Stalkers, Medivacs, Hellions, Speed Zerglings, Mutalisks etc.) is the key to succeeding in this style of indirect engagement.

This is the method I favour in most of my matches, I always attempt to destroy my opponents plans first but lack of experience often makes this difficult. Letting your opponent mass a powerful army without any intervention is nearly always a bad move, if you have ever had a maxed out Stalker/Colossus army bear down on you then you will know why. Suffering this too many times I have resolved to always pressure and do everything I can to reduce my opponents ability to mass an army.

“The next in order is to attack the enemy’s army in the field.” – Sun Tzu

Having Zealots flank an attacking army like this will deny their retreat whilst you cut through them.

If you allow your opponent to amass their forces unopposed, then a straight up engagement in open ground is your next best option. In this situation the winner will be the player: who has the best unit composition, who can micromanage their army better and who can best continue production to reinforce their army throughout the conflict.

Why should you ever let the situation get to the point where you and your opponent are in equal positions? It is always better to be in a dominant position in each match. However, your opponent will be making their own efforts to get an edge over you and it is sometimes unavoidable that you will need to enter a battle on (nearly) equal grounds.

In this situation there are a few things you could do to tip the scale in your favour;

• Position your forces well just before the conflict ensues (such as creating an arc with your ranged units and moving your melee units to the front),
• Send some units to flank and trap your opponents forces, and,
• Take advantage of terrain such as high ground, choke points and visibility blocks (smoke or grass).

Using these tactics you can turn an equal situation into a one sided victory. For an excellent example on how to do this as Zerg against Terran see Benji’s Guide on How to Control Zerg Units.

“And the worst policy of all is to besiege walled cities.” – Sun Tzu

What if your opponent amasses their forces but does not leave their, well defended city? The most common reaction in this situation is to attack their base. In StarCraft 2 when your opponent is being completely defensive you should realise that you have the advantage. Attacking your opponent at their base where they have defences effectively hands that advantage over to your opponent.

Why attack this straight up? He isn't going anywhere anytime soon.

So instead, use the fact that your opponent is not putting pressure on you to secure a long-term victory. Attrition is the name of the game here, starve your opponent of resources and deny their attempts at expansions. At the same time you should expand yourself, improve your tech, research upgrades and create a formidable army. Whilst doing this probe for weaknesses in your opponents defences with gentle harassment, this will force them to plug those gaps with more defences — further weakening his army. Put pressure on your opponent but never feel like you need to break in and kill them, instead let them kill themselves with their passivity.

Eventually your opponent will have to move out, as they will have exhausted their resources and if they delay attacking any further they will become weaker and weaker. Usually this attack will come in the form of a ‘doom push’,  just remember that although this may be hard to deal with your opponent has no capacity to replenish their forces. So just whittle them down slowly or if they head straight for your main base you should simply fall in on theirs. Because of the amount of expansions you should have by this point and with your ability to restock your army you should have no trouble destroying their base first.

So don’t waste your army against a walled in opponent, if you have ever attacked a turtling Terran player with siege tanks and turrets ringing their base you will know how little you can achieve and how swiftly defeat can follow. Take the advantage when it is given to you and don’t give it away for nothing.

I recommend that anyone interested in strategy (that should be you!) should read Sun Tzu’s “The Art of War” for themselves. It’s one of those things that you read and then it becomes a part of your character, helping you in any area of your life where a strategic decision needs to be made. And its like $10 on Fishpond with free postage in Australia, so you have no reason not to. On that note I also recommend “Go Rin No Sho” (“The Five Rings”) by Miyamoto Musashi, it talks about mentally dominating your opponent and seizing any advantages you are given. It’s probably my favourite book in this genre.

At which of the above points do you have most of your wins? Do you scout well and destroy your enemy’s plans? Or do you engage in the field and win with superior tactics? Which one do you most commonly lose to? Comment below and let me know!

I know i'm supposed to scout, but what am I looking for?

I know and i’m sure that you know that it is important to scout. You may even know specifically when you should scout, “Scout at 9/10 after building a Pylon”. I’m sure that sounds familiar. But the harder part to understand is why? The answer to that may seem simple, “To see what our opponent is doing”. But I have been noticing in my games that maybe that idea is causing all of my problems. I don’t really know what indicators of my opponents strategy i’m looking for when I scout, so I usually try to see exactly what they are doing. It can be pretty scary when you don’t know what your opponent is doing so it’s natural to feel like you want to watch their actions as much as possible. But you cant always have vision of your opponent, and on top of that you cant spend all of your time looking at your opponents base. We have to be building things, upgrading, expanding and building workers!

In the upper levels (the Pros) players are familiar with all of the possible things that their opponent could be doing in that particular matchup. They narrow down the possibilities based on what indicators they see until they know exactly what their opponent is doing. For example, DIMAGA recently played a game against MouzNaama, DIMAGA saw one indicator from his opponent, a Hellion. From this he was able to narrow down Naama’s plan to: A tank marine push, probably with Thors. See Day[9] Daily #254 for a cast/analysis of this game.

You will want to move towards learning all of the possible strategies for the match ups you play as you improve in league and skill. However, at the lower levels this seems to not be so important. Strategies are rarely executed cleanly and the indicators that the pros use will not really apply. Put simply, the lower leagues are super unpredictable and you will see all kinds of wacky strategies.

Because of the unpredictability of the games I see and because I couldn’t spend all day looking at my opponents base I settled for just checking if my opponent was doing something funky and then trying to see when he was going to attack. But with this approach I was never ahead of my opponent, I would just do what I was doing, hoping that it was right.

More recently I have been thinking:

“What if it’s not important to see what our opponents are doing, but rather, to see what they are not doing?”

Once I had this thought I started trying to use anything I saw to tell me what my opponent was not doing instead of trying to see exactly what my opponent was doing. I found that by noticing one thing, I could cross off another.

Some common examples I have been noticing include:

• My opponents not getting gas early. That eliminates any tech options from their early game plans, they are either going to expand or rush with mineral only units. “I should stick around to see if they build a bunch of unit producing structures. They aren’t? Okay they are expanding, I should push or expand myself.”
• I dont see an expansion early in the game. I can assume without seeing anything else that they are either building a large force to attack with or they are trying to race towards a particular tech. “I’d better build some units to defend with so I don’t die!”

Scouting in line with this thinking has greatly helped my early game knowledge of what my opponents are doing, and allows me to decide on an appropriate overall strategy. But after this the unpredictability of low-level play really prevents you from predicting your opponents plans with any great degree of accuracy. So how should we scout after this? I have come up with a list of your priorities in scouting that extend throughout the rest of the game.

These scouting priorities are:

1. Finding out if or when an attack is coming. Your first priority is always to not die and knowing when the next attack is coming allows you to decide wether defences are necessary or whether you should expand.
2. Maintaining map control. Map control is vital to your long-term prospects of winning and winning is your first priority after not dying. Vision helps give you map control as it allows you to detect you opponents troop movements and expansion attempts which you can then block.
3. Intercepting harassment attempts. If you have map control your opponent will likely react with attempts at harassment with the aim of reducing your economic advantage or forcing you to pull your forces back. Having excellent vision will allow you to intercept any harassment attempts and prevent your opponent from taking map control from you.
4. Finding out your opponents unit composition. Finding specifically what units your opponent has will allow you to build an attacking force that will be more effective against his.
5. Seeing exactly what your opponent is doing. It’s easy to see why this is the least important function of scouting after listing the above. If you have map control and have denied any attempts at harassment, it doesn’t really matter what your opponent is doing inside his base because you have already won.

Scouting with these priorities in mind rather than trying to see exactly what my opponent was doing has given me a massive boost to my confidence in game. I realise now that wanting to see exactly what your opponent is doing is a natural response to the fear and uncertainty you have when you first start playing Starcraft 2. But it really is the wrong way to dispel that fear and uncertainty as it causes you to simply react to what your opponent is doing rather than taking control yourself.

After all, what makes you feel more confident? Reacting to what your opponent is doing or taking control yourself?