── Block builder
Build a custom block, tuned to your gap.
Filter on the left. The matching pool updates live below. Pick a block size and mode, then build — your block opens in the quiz runner with the same paywall rules as a chapter set.
1969matching items
Block size
Mode
Mix
Off, the block is drawn evenly from whatever matches your filters.
Build my block — preview (2 sample questions)
Your filters shape the block, but a preview serves 2 questions from the free sample chapter — not from the 1,969 above. Unlock the full bank.
Your performance
Answer a block and this fills in — first-attempt accuracy by board domain, by series, and by difficulty, so you can see which third of the exam is actually costing you points.