The result
The competition is two papers on consecutive mornings, three problems each, four and a half hours apiece. Every problem is marked out of seven by coordinators working through the written proof line by line. The official 2022 table records Ngo at 7, 7, 7, 7, 7, 7: total 42, rank 1, gold.
Because the maximum cannot be exceeded, all ten contestants who reached it in Oslo share first place. The others were six from China, Yuya Oki of Japan, Ihor Pylaiev of Ukraine, and Galiia Sharafetdinova, whose entry carries no country.
The name, and how to read it
The olympiad's database prints given names first, in the Western order, which is why the entry reads Quy Dang Ngo. In Vietnamese order the family name comes first and the same contestant is written Ngo Quy Dang, which is the form used in Vietnamese coverage and the one most searches in Vietnam will use.
The research file for this page notes that the diacritics for the name have not been confirmed, so it is given here without them. Readers looking for Vietnamese-language reporting should search the reversed order rather than the database spelling.
Vietnam at the olympiad
Vietnamese teams are built through a national olympiad system that selects and trains a squad before the six places are fixed, and the country has produced gold medallists repeatedly over decades. A maximum score is the rarest result that system can deliver, and in 2022 it delivered one.
Across the olympiads examined for this file, the perfect scorers came from China, South Korea, Japan, Poland, Romania, Ukraine, Vietnam, the United Kingdom and the United States. The list is a reasonable map of where competitive mathematics is trained hardest.
Why ten was unusual
Ten perfect papers in a single year is the highest figure in this file. The 2019 olympiad produced six, the 2023 olympiad five, the 2026 olympiad seven, and the 2024 olympiad exactly one. The variation is a property of the paper, not of the contestants: the problem selection committee tunes difficulty, and the top of the table moves with it.
The medal structure stays fixed regardless. At most half the field receives a medal, in a ratio of roughly one gold to two silvers to three bronzes, which keeps gold at about one contestant in twelve however the scores fall.
What is documented, and what is not
Documented by the olympiad's own database: the host city, the field of 589, Vietnam as his country, the six problem scores, the total, the rank and the medal.
Not documented: his age or date of birth, which is why this page carries no birth year; his school or province; the correct diacritics for his name; and any result or activity after 2022. No Vietnamese press report was collected for this file, so nothing from that coverage is repeated here.
| Person | Country | Milestone | Age / Stat |
|---|---|---|---|
| Quy Dang Ngo | Vietnam | A perfect 42/42 at the International Mathematical Olympiad, 2022 | — |
| Colin Shanmo Tang | United States | A perfect 42/42 at the International Mathematical Olympiad, 2019 | — |
| Youngjun Cho | South Korea | A perfect 42/42 at the International Mathematical Olympiad, 2019 | — |
| Galiia Sharafetdinova | Russia | A perfect 42/42 at the International Mathematical Olympiad, 2022 | — |
| Ihor Pylaiev | Ukraine | A perfect 42/42 at the International Mathematical Olympiad, 2022 | — |
What is documented — and what is not
✓ Documented
- Scored 42/42 at IMO 2022 in Oslo for Vietnam
- Ranked joint first with a gold medal
- Seven points on each of the six problems
- One of ten perfect papers among 589 contestants
? Unverified, disputed or wrong
- No age, date of birth or school in these sources
- Diacritics for the Vietnamese spelling are unconfirmed
- No later IMO appearance or career information recorded
Questions people ask about Quy Dang Ngo
What did Quy Dang Ngo achieve?
A perfect 42 out of 42 for Vietnam at the 2022 International Mathematical Olympiad in Oslo, joint first with a gold medal.
How is his name written in Vietnamese?
Ngo Quy Dang, family name first. The olympiad database prints it in the Western order as Quy Dang Ngo.
How old is Quy Dang Ngo?
No age or date of birth appears in the sources used here.
How many perfect scores were there in 2022?
Ten, out of 589 contestants.
What is the highest score possible at the IMO?
42, from six problems worth seven points each.
Is Quy Dang Ngo on Wikipedia?
No standalone English article is recorded for him in this file.
Where is Quy Dang Ngo now?
The sources used here do not say.
Why are the diacritics missing from his name?
The research file for this page notes that the correct diacritics have not been confirmed, so the name is given in plain Latin script.
Quick quiz: how well do you know Ngo’s story?
Which country did Quy Dang Ngo represent?
How is his name written in Vietnamese order?
What score did he record in Oslo?
Sources
- IMO 2022 individual results — International Mathematical Olympiad (official), 2022
- Quy Dang Ngo - IMO contestant results — International Mathematical Olympiad (official), 2022
Checked by the Geniuses.club editorial team. Ages are given as of September 2026.
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