Gold in spoken numbers
Memoriad, described by World Mental Calculation as an international competition of memory and mental calculation, ran from 6 to 10 November 2024 in the United Arab Emirates. The mental calculation section alone drew 121 competitors from 20 countries, with close to 30 more entered in the memory events.
The spoken-numbers result reads: first, Oyun-Erdene Tsengelbayar, 175 digits. Second and third, both also Mongolian, recorded 164 and 162. The margin was eleven digits over the next competitor, in an event where the difference between a medal and nothing is often a single lapse in a sequence.
Two more medals in the same week
The binary-digits event produced a second place: 1,382 digits, behind Uuriintsolmon Enkhjargal's 1,599 and ahead of Naranzul Otgon-Ulaan's 1,353. Speed cards brought another second, in 20.62 seconds, between Munkhshur Narmandakh at 19.47 and Nomin-Erdene Tsengelbayar at 22.05.
The two card times, read together, show how the discipline is scored: the podium runs from the fastest time downwards, and the gap between gold and bronze at Memoriad was two and a half seconds. Three medals in three different formats, from recall of speech to recall of binary strings, is a wider range than most competitors manage at a single event.
Grand Master of Memory, Istanbul
The World Memory Championships held their 2024 edition in Istanbul over three days, with competitors registered from 21 countries. The championship's own report lists Oyun-Erdene Tsengelbayar among the competitors awarded the title of International Grand Master of Memory, alongside Uuriintsolmon Enkhjargal and Naranzul Otgon-Ulaan.
The title is conferred by the championship rather than claimed by the competitor, which makes it one of the few pieces of vocabulary in memory sport with a documentary trail behind it.
The Mongolian sweep
The striking feature of the 2024 results is not one athlete but a country. World Mental Calculation reported the six memory events at Memoriad as dominated by an extremely well-prepared group from Mongolia, and the published podiums bear that out: in spoken numbers, flash numbers, binary digits and speed cards, all twelve medal places went to Mongolian competitors.
Istanbul told the same story. The World Memory Championships list the top three finishers of 2024 as Uuriintsolmon Enkhjargal, described on the championship page as 14 years old, then Naranzul Otgon-Ulaan and Nomin-Erdene Tsengelbayar, all of Mongolia.
What is documented - and what is not
The record here comes from two published results reports. They establish the events, the scores, the placings and the Grand Master title. They do not give a birth year, an age, a home city, a school or a photograph, and no Wikipedia article on this competitor was found.
One point requires care. Nomin-Erdene Tsengelbayar competed at the same events and shares the same second name on the results lists. No source used here states a family relationship between them, so none is asserted on this page.
| 人物 | 国家 | 里程碑 | 年龄 / 数据 |
|---|---|---|---|
| Simon Reinhard | 德国 | 在 2014 和 2016 年赢得极限记忆锦标赛 | 35 岁 |
| Oyun-Erdene Tsengelbayar | 蒙古 | Memoriad 2024 听记数字金牌 | — |
| Scott Hagwood | 美国 | 连续四年赢得美国记忆锦标赛 | — |
| Nomin-Erdene Tsengelbayar | 蒙古 | 2024 年世界记忆锦标赛总成绩第三名 | — |
| Tatiana Cooley-Marquardt | 美国 | 三次赢得美国记忆锦标赛 | — |
What is documented — and what is not
✓ Documented
- First place in spoken numbers at Memoriad 2024 with 175 digits (World Mental Calculation results report)
- Second places in binary digits (1,382) and speed cards (20.62 seconds) at the same event
- Listed as an International Grand Master of Memory on the World Memory Championships 2024 page
? Unverified, disputed or wrong
- No published age, birth year, home city or school
- No stated relationship to Nomin-Erdene Tsengelbayar, despite the shared second name
- No documented results after 2024 and no Wikipedia article
Questions people ask about Oyun-Erdene Tsengelbayar
What is Oyun-Erdene Tsengelbayar known for?
Winning the spoken-numbers event at Memoriad 2024 with 175 digits, taking two further medals at the same competition, and being named an International Grand Master of Memory at the 2024 World Memory Championships.
How old is Oyun-Erdene Tsengelbayar?
No source used here gives an age or birth year.
What is Memoriad?
World Mental Calculation describes it as an international competition of memory and mental calculation. The 2024 edition ran from 6 to 10 November in the United Arab Emirates.
What is an International Grand Master of Memory?
A title conferred by the World Memory Championships. Its 2024 page lists Oyun-Erdene Tsengelbayar among the competitors awarded it that year.
Is Oyun-Erdene Tsengelbayar related to Nomin-Erdene Tsengelbayar?
No source used here states any family relationship. Both competed at Memoriad 2024 and both appear on the results with the same second name, which is as far as the documents go.
How dominant was Mongolia in 2024?
In spoken numbers, flash numbers, binary digits and speed cards at Memoriad 2024, all twelve medal places went to Mongolian competitors, and the top three at the World Memory Championships in Istanbul were also Mongolian.
Is Oyun-Erdene Tsengelbayar on Wikipedia?
No Wikipedia article was found. The record here rests on competition results reports.
Where is Oyun-Erdene Tsengelbayar now?
Nothing after the 2024 season appears in the sources used here.
Quick quiz: how well do you know Oyun-Erdene’s story?
How many digits did Oyun-Erdene Tsengelbayar recall to win spoken numbers at Memoriad 2024?
Which title did the 2024 World Memory Championships confer?
Where was Memoriad 2024 held?
Sources
- Memoriad 2024: Results — World Mental Calculation, 2024-12-14
- WMC 2024 - The World Memory Championships — World Memory Championships (official), 2024
Checked by the Geniuses.club editorial team. Ages are given as of September 2026.
