This build order is an aggressive 2 base all-in played by Russian BioTerran player Overpass. As an opening he uses standard version of 2-1-1. Playing 2nd Supply before 2nd Gas is the safest TvZ doubledrop build order, therefore it is much more preferable for ladder games and BO1 matches. The transition after 2-1-1 is placing the production of: 5 barracks(4 reactors, 1 tech lab marine production), 1 factory on reactor (Widow mine production) and 1 StarPort for medivac production without add-on. The all-in is played on approximately 33 SCVs and in most cases has no transition into later stages of the game. The timing of sending the main army to attack is 6:30. It is very important to stick to that timing to get the maximum efficiency of this build.
Why is there no SALT encoding or Overwolf build?
| 0:00 | | ||
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| 1:27 | | Scout Zerg's natural base with the SCV which built the Barracks | |
| 1:40 | | ||
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| 3:30 | | At 35 supply start the construction of wall on 2nd base | |
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| 4:05 | | Aim for 4:35-4:38 timing of 2 medivacs | |
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| 4:28 | | ||
| 4:33 | | Constant production till the end of the game | |
| 4:34 | | ||
| 4:37 | | After the medivacs come out, fly with StarPort and build a new reactor for additional barrack, Another reactor for 5th Barracks. After the add-ons are ordered, pull 3 workers from gas on main base and transfer them on natural mineral line | |
| 4:45 | | ||
| 4:47 | | ||
| 4:52 | | After the reactors on Factory and StarPort are completed, switch them with the new built barracks. Order one more reactor on a Factory in order to produce 2 mines at the same time. |

However build order is highly micro dependent and might be difficult for beginners, it has extremely high potential to make the most of the Mid-game and finish the set with a victory. As most Zerg players in the current meta have a decent experience of playing versus the 2-1-1 builds, it is crucial to micro very well during the whole game and get the maximum efficiency of your units, including scouting Reaper. 2-1-1 has always been weak against Ling-Bane all-ins, so it is essentially important to get the most efficient scout during the early game in order to have enough time to get ready to defend.