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My practice progress

Built only from what's saved in this browser, on this device. Nothing here has been uploaded anywhere — this page makes no network calls at all. The headline accuracy is your first attempt at each question, because that's the honest one. Numerical questions are counted for time and effort but left out of accuracy — the question database has no answer key for them.

⏱ Take a timed test Back to chapters

Saved locally as yjt:v1:* in this browser's storage — chapter practice by the chapter pages themselves, timed tests and adaptive practice by the test page. Switching tracking off on any chapter page stops new practice being saved; a timed test always saves its answers and its clock while it is running, because that is what lets a reload or a closed laptop lid resume the same paper instead of losing it. Adaptive practice keeps one more thing than the others do — a record of how it is pitching questions to you, which is what lets it carry on from session to session instead of starting over. "Clear my data" here erases all three — every chapter's practice, every test attempt, and everything adaptive practice has remembered — and cannot be undone. It leaves your on/off preference alone. (The "clear my data" button on a chapter page erases the same things.)