Mode 01
Free Practice
Untimed. Every question is graded on its numbers — one field per value the question asks for. One hint per question, and the full worked solution once you have attempted it.
Career track
Categories · leave empty for all
Interview stage · optional
Every core mechanism is fair game, two probes deep.
Aims for 20% Easy · 50% Medium · 30% Hard · Up to 2 follow-ups · In the real thing, about 3 minutes a question.
Difficulty · set by the stage
Questions