Starcraft – What does a “timing push” mean

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I've heard this term used many-a-time in StarCraft 2 (and 1) replays on the web. At first, I always assumed it meant the player was sending out an attack force at a specific time in the game that's considered a good time to push out, or inside what is considered to be an optimal window of attack.

But the more videos I watched the term seems to be used when the player is just attacking, regardless of when/why/how, and about the scenario in which it isn't used is when a player counter-attacks after successfully defending another players timing push (and then they just call it counter-attack).

So why do they call it timing push? And not just "attacking". Or is it in fact only (properly) used at certain "times" during the game?

Best Answer

A timing push involves making an attack at a certain point in your build order, such that the attack coincides with the completion of a researched upgrade, or a certain mass of units.

For example: you might see a Terran Bio timing push, where the Terran player moves his forces out such that Stimpack technology will have just finished as they reach the enemy forces.

Also applies to Weapon / Armor upgrades. Since the Weapon / Armor upgrades often completely cancel each other out, it's best to start fights when you have the upgrade, and your opponent does not. If you wait too long, your opponent (if they know what they're doing) will complete their own counter-research, and your advantage will be lost.

Hence, timing push; Timing an attack such that it occurs when you have the momentary advantage.