Say I go for a timing push and my opponent goes some fast expand build.

Once I have enough units I push. Then there is a small battle, which usually does not end the game.

During this time I expand myself. So at the end we both end up with 2 expansions and some units.

But how can I determine if my push did enough damage to set him back? I want to know how to evaluate this during a game. In replays I can always check the army sizes / worker count / income and tech, but during a game I barely know my own worker count.

  • I'm not sure you can really define "enough" here. Enough that you are now ahead of him in economy? Enough that you are better off than you would've been without the push? Enough that you are definitely going to win as a result?
    – bwarner
    Commented Mar 29, 2012 at 17:05
  • The simple answer is that you win the game. -.- Whether you've actually done enough damage is mostly just experience.
    – Decency
    Commented Mar 29, 2012 at 21:48
  • Enough means that we are at least even. Better if I am ahead. Usually if he has an expansion that he can defend he has the advantage, even if I expand myself afterwards.
    – ayckoster
    Commented Apr 2, 2012 at 11:34
  • Keep the psychological factor in mind. An even trade of armies on enemy territory (especially near a base, as in, a push) is often actually an advantage, as it throws the enemy off balance. It may make them shift to the defensive, prioritize countering and army instead of reasonable expansion, and may slip up their build or worker production. Just make sure you aren't slipping yourself as you're watching the attack.
    – Fadeway
    Commented Apr 6, 2012 at 17:49

2 Answers 2


While you're attacking, pay attention to his economy & tech status. Do you see chrono boosts on an upgrade? Is his unit composition hinting that he's going to transition to something soon?

Did you kill any workers? How much army did he have left when your attack ended?

If you can put these together, mixed with a lot of practice and game sense, you can evaluate whether you are ahead or behind. In fact you will have the tools to know much better than he does, because you were at his base scouting the whole time.

Honestly it's not that important to know this though, because how would it affect you? Either you know you are so far behind that you must make a last-ditch all-in, or you know you are so far ahead that you can expand yet again and still hold anything he can throw at you or counter anything he has.

Anything in between and you should be careful to assume either way, as your game sense gets better and better with practice. Keep scouting.

  • 1
    +1 for 'Keep Scouting' because what you know NOW will change so fast your mouse will end up in your anu--, yea we'll leave that one alone. But seriously, anything that you learned is only as usefull as your continued awareness of what happens next. KEEP SCOUTING.
    – Ender
    Commented Mar 29, 2012 at 17:27
  • Are there some guidelines I can use, like for example I need to kill X drones with an aggressive 2 rax vs 16 hatch? Or is it just a feeling you might be about even.
    – ayckoster
    Commented Apr 2, 2012 at 11:43

To begin with, let me make clear that this topic is a complex one, and analysis is almost always subjective. To determine whether your attack has done enough damage, you will have to have set a goal for the attack, and know whether this goal was fulfilled. To simply attack and wonder afterwards whether you did "enough damage" is a waste of your time and resources.

Long story short: make sure your attacks have a strategical or economical objective, commit just the resources required to fulfil this goal, but no more, and get the hell out when this objective is complete. The military folks call this a "strategic attack".


A push and harassment are not the same thing. Harassment is meant to create a small advantage you are going to exploit, or simply apply mental pressure on your opponent. A push, on the other hand, is meant to set back your opponent significantly. A well executed push will set him back so much that recovering is not feasible, consequently winning you the game.

More generally, the loss of a harass troop might set you back economically, but should not mean that your game is lost. Loosing your troops in a push, on the other hand, will often mean that you will lose shortly after to a counter attack.

The Push

Many players will only ever perform one big push in the entire game. This kind of player will sit on his bases, researching and defending, until his "Ball of Death" is complete. He then pushes out, and crosses his fingers that the ball succeeds in it's mission. If this push clashes on the rocks of their opponent's defence, the game is pretty much over.

One step up from this level is the initial aggressor. He will prod and pounce around your base before the 12 minute mark, at which point your defences should have pushed him back home, and he will then sit there and do the same as above.


A defending, passive player will mostly leave you alone, bar the eventual scouting poach. But no matter how good his defence, you can always chip away at him, slowly but surely setting you ahead. This is called "harassment" or "pressure". But this pressure needs to follow a plan, or it will just be lost resources to you.


Any kind of attack entails an economic investment. You have to weigh up this investment with the damage you expect to cause. The more you invest in your attack, the more damage you have to cause to "break even". Ideally, though, you will want to cause more economical damage than the sum total of your investment.

By applying good harassment, you can try to keep up with an expanding player without expanding yourself, although this is only ever very temporary. The only situation where you would not expand is in a so called "one-base all-in", which relies heavily on timing. If your timing gets delayed for some reason, you may delay your opponent's economical rise by applying selective pressure, forcing him to build defensive structures and units instead of committing to tech and economy. Killing workers, or even entire expansions, is an excellent way to achieve this.

When speaking of economy, Starcraft 2 is a spreadsheet. Whoever collects more resources faster, and is able to invest them better, wins. If you are behind, you hit your opponent in his metaphorical wallet to even the game. If you're ahead, you hit him right there, to get further ahead. Of course "being ahead" is always subject to the relative level of skill between you and your opponent. This kind of speculation always assumes equal skill, which is never the case in practice.


Economical advantage is all good and nice, but a strategical advantage can lead to a much faster victory. Generally, you will want to try and deny your opponent a tech path that is strong against your intended build. For example, if you're a Terran going for an army composed mainly of tanks, you will want to minimize the amount of Immortals your Protoss opponent has by delaying his Robotics tech as much as you can, and picking off individual Immortals before the grand engagement. You know that Immortals are expensive and slow to build, so denying him expansions is an effective way to limit his production rate, and continuous pressure will force him to commit resources to other units in order to stay alive.

Almost as important as the mathematical factor to pressure is the mental factor. By executing a lot of hit-and-run attacks, your opponent will often get nervous, and his attention will divert in the moment of the attack, allowing for flanking attacks, or picking off strategic infrastructure easier with a drop.

Executing a big drop in the back of his base will often force your opponent to pull a large chunk, or even all, of his army back to defend, which leaves the proverbial door wide open to a frontal attack. The sort of multi-tasking required to effectively defend from this kind of two-pronged attack is usually only found in the very highest level of players, but the ability to execute such an attack with minimal losses is equally hard. In a pinch, you can simply suicide your drop and commit to the frontal attack, hoping to catch his army in a weird position once the drop is cleared.

A good player will react to your map control while estabilishing his own, so that you don't know where his army is. This prevents flanking and unnecessary engagements. Catching a big army out of position, like tanks unsieged, or vulnerable units in the wrong spot relative to other, harder units, is key when your army is smaller or your unit composition subobtimal. To flank his army, you will need to know where it is, and where it's going. This means that you either have superb scouting, or that you are able to foresee his movement. A strategic drop in his base can make him pull a good chunk of his army back, which makes his movements predictable, and thus, vulnerable.

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