Forty questions, fifteen seconds each
Four themed rounds of ten. Every question brings a picture and four answers, the ring counts down from fifteen, and the difficulty climbs - inside each round and from one round to the next. The last five are Riva's Tough 5. About sixteen minutes, start to finish.
Round names from a real episode - Classic Rock Quiz, 14 September 2026. The bar shows the difficulty curve, not a measurement.