>Send all SCVs to harvest minerals, and begin building them. >Once the 8th SCV is done, send it to build a supply depot. You should have barely enough and you will normally have to wait then yoo build the 9th SCV. >Keep building SCVs, >and once you get 150 minerals send one of them to build a barracks. >If possible, put the barracks 2 squares north or south of the command center, or 3 squares west or east of it. >This way you have enough room to place a bunker in between when you're done. >You want to keep the bunker closed to the outside, but open to your SCVs for repair. >Build your 2nd supply depot wur 14th unit is building. >Your second barracks should come soon afterwards, as soon as you have enough minerals. >If you do not wish to build a 2nd barracks and you want to upgrade quickly, >build a refinery instead. >When your barracks is finished, immediately build a bunker with the same SCV who finished the barracks. >Try to build it as close to your SCVs as possible without interfering their harvesting. >The 3rd supply depot should be made when the 20th unit is building. It is your decision on what to do from then on. This building order, if done quickly enough, will always be able to defend even the fastest zergling rush as long as the map is large enough. (It may not work on Blood Bath, for instance) You must repair your bunker while enemies are hitting it, and repair with several SCVs instead of just one.