Probably the most important piece of utility to throw on CT side Overpass. This smoke completely denies fast Monster plays from the Ts with just a single smoke grenade. Ideally throw this every single round unless you want to peek it with an AWP early in the round.
Difficulty: 2/5
Importance: 5/5
Wedge yourself into the corner created by the dumpster and the back wall of the A bombsite like shown:
Lineup towards the leftmost part of the power pylon and left click jump throw:
Result: