Dark Templar Drop

(1) Build 7 probes.

(2) Your 8th probe should construct a Pylon. Then send that probe to
mine.

(3) Build another probe, if the Pylon is done send it (and if you have enough money!) to build a Forge. Send that 9th probe to mine, if there are that many mineral stacks.

(4) Build a Gateway with a 10th probe.

(5) Build at the choke point a decent defense of Photon Cannons. (Not to many!)

(6) Build the Cybernetics Core with the 10th probe.

(7) With the 10th probe build another Gateway, for fast Dark Templar production.

(8) Build a Citadel of Adun and a Robotics Facility.

(9) After the Citadel of Adun is done, build a Templar Archives.

(10) After the Robotics Facility is done, build one or two shuttles depending on your minerals.

(11) After the Templar Archives is done pump out packs of Dark Templars.

This strategy only works on terran and other Protoss that have No detectors(Turrets,Science Vessel,Observers,Cannons)