Cheese Strat
An ambush set play or comp that works once if the enemy does not know it — low reproducibility, but mandatory to prepare for.
Cheese has value on exactly one point — killing on first sight — premised on the enemy not having scouted it in advance and prepared a counter. Typical examples are gimmick setups that abuse a specific map's structure, or special compositions that ignore standard comp theory. Once the counter is known, reproducibility drops to nearly zero, so it is held in reserve as a disposable trump card and played when you need to steal one important map. Where set plays, Bunker Comp and Pirate Ship are questions of form (reproducible tactical shapes), cheese is a meta-level classification meaning "not orthodox, but producing value through surprise" — and those forms can themselves become cheese when they are used as a first-sight kill. Reading the enemy's state of preparation to time when you pull it out is the core of coaching work.
In matches where you have little information on the scrim opponent, or in a Bo3/Bo5 where you need to steal a single map, pull out a gimmick the enemy has not prepared for. Holding a prepared gimmick in reserve until the "right now" moment is itself part of the team's meta strategy.
Running the same gimmick repeatedly, getting scouted, and being fully shut down once the counter is drilled. Having no prepared transition back to standard play after the gimmick breaks down, so the whole comp stops functioning the moment the cheese is read.