Calibrate Difficulty Across a 50-Question Quiz

You've written fifty questions and you suspect one round is brutal and another is a doddle, but you can't see it from the inside. Paste the lot. It scores each question one to four, reports the difficulty profile as percentages, flags the rounds that are badly unbalanced and tells you which questions to swap. The quiz that feels fair all the way through.

I have written a {NUM_ROUND} round pub quiz with {TOTAL_QUESTIONS} questions total. I will paste all questions and answers below.

{FULL_QUIZ}

Analyse the difficulty distribution of the full quiz. For each question assign a difficulty score of 1 (very easy), 2 (moderate), 3 (hard), or 4 (specialist). Then: report the overall difficulty profile as a percentage breakdown, identify any rounds that are severely unbalanced, flag questions likely to produce zero correct answers across an average pub crowd, and suggest specific substitutions or rewrites to achieve an ideal difficulty curve where each round builds slightly in challenge and the final round is the hardest. Show your reasoning for any question you rate 4.