10 questions · adaptive difficulty
Bottleneck Detection
Spotting the one step that caps the whole system, and refusing to invest anywhere else until it moves.
Questions get harder as you get them right, and easier if you slip.
Everything you need to answer is in the scenario. No trivia, no outside knowledge.
Accuracy counts most, difficulty next, speed last — guessing quickly will not help.
Press 1–4 or A–D to answer, then Enter for the next question.
A scratch calculator is available during every question.