F=ma Exam — Complete Solutions by Topic (2008–2024)
Every question from 17 years of F=ma exams, regrouped by topic with full worked solutions — the definitive study reference for the US Physics Team qualifying round.
A shelf of 26 competition books and research guides. Explore fully worked solutions in physics, astronomy and mathematics, alongside the Yau Award whitepaper for planning and presenting original research.
Every question from 17 years of F=ma exams, regrouped by topic with full worked solutions — the definitive study reference for the US Physics Team qualifying round.
A year-by-year archive of every F=ma exam, fully worked — ideal for timed practice and tracking how difficulty has shifted across the circuit.
Eighteen years of the USA Physics Olympiad semifinal — the free-response round after F=ma — solved in full, year by year, for students moving into long-form olympiad writing.
Every PhysicsBowl question sorted by topic, with thorough write-ups that explain not just the answer but the underlying physics at stake.
Topic-sorted PhysicsBowl solutions at an intermediate depth — concise where clear, expanded where the physics deserves more room.
Compact PhysicsBowl solutions for rapid review — one focused paragraph per problem, no padding, no detours.
Complete worked solutions to every British Astronomy and Astrophysics Olympiad paper — the only such full reference available in English.
Complete worked solutions to all BPhO Round 1 Section 2 papers, arranged chronologically for year-on-year comparison.
BPhO Round 1 Section 1 questions regrouped by topic, with full worked solutions for systematic review of each area.
Year-by-year BPhO Round 1 Section 1 solutions — useful for progressive difficulty tracking and exam-style practice sessions.
The long-form Round 2 papers sat by top Round 1 scorers, solved in full and cross-checked against official mark schemes where published — completing the Tian2 BPhO shelf.
Topic-organised solutions to the Senior Physics Challenge — ideal for diagnosing weak areas and building coverage before a sitting.
Chronological Senior Physics Challenge solutions for realistic exam-style practice with a full record of how each paper was set.
Year-by-year Intermediate Physics Challenge solutions — a complete archive for building from the ground up.
Topic-sorted Intermediate Physics Challenge solutions for structured revision — a clear map from topic to mastery.
Ten years of PUPC papers fully typeset with worked solutions — a rare archive of this university-hosted circuit, including problems set by Tian2 in the PUPC Problem Creator role.
2000–2025 AMC 10 problems sorted and fully solved by topic — the most comprehensive AMC 10 reference available, covering 25 years of the competition.
The complete AMC 10 archive in chronological order, fully worked — ideal for year-by-year timed practice.
1,811 pages of competition mathematics — every AMC 12 problem from 2000–2025 sorted by topic with complete solutions, revised September 2026.
Every AMC 12 exam in chronological order, fully worked — a complete year-by-year record of the competition.

Every AMC 8 problem grouped by topic with full solutions — the definitive AMC 8 study reference for building from fundamentals.

The complete AMC 8 archive by year, fully worked — straightforward exam-style practice from start to finish.
1,613 pages of fully worked AIME problems — a complete, polished archive of one of the most demanding pre-olympiad competitions, revised September 2026.
All USAMO problems sorted by topic with complete proof-level solutions — a landmark reference for olympiad-level mathematical reasoning.
The full USAMO history in chronological order with complete worked proofs — see the evolution of olympiad problem-setting over decades.

A guide to the S.T. Yau High School Science Award, from research topics and paper writing to presentation and preparation. Read on the web or download the Chinese print edition.