Really nice trick play, but Krogoth should've booked it early after seeing all those units on rader, but I'm sure he was WTFing too hard to think you really had no way to continue supporting your army in the long term.
Why is everybody going crazy over this replay... this is an old strategy, invented by Funkoff... it only works once, the key is to check the rank bar, if its at a low stable level your opponent is either doing the 4 research or 4 factories like in this replay. its only hard to counter on bigger open maps like artic because you can be attacked from many sides. But on maps like spring dual its very easy to counter just by building 2-3 pd's on either the hills or/and under factory shield. Why it only works once on an experienced player is because its easy to counter, and just by checking the rank bar(f2) you will have plenty of time preparing for the attack.
TCL987 vs Krog0th