Two silvers in the UAE
Memoriad 2024 was held from 6 to 10 November in the United Arab Emirates. World Mental Calculation, which published the results on 14 December, recorded 121 mental calculation competitors from twenty countries, with nearly thirty more entered only in the memory disciplines.
In the Flash Anzan marathon the report places Siddhi Mukesh Jain second, behind Jeonghee Lee of South Korea. The same results page records her in second place in the calendar dates, the discipline won by her compatriot Jay Baldiya Jain with 125 dates in 51.24 seconds. Two silvers in two unrelated disciplines is a wide range for one competitor.
What Flash Anzan is
Flash Anzan presents a series of numbers on a computer screen, one after another, and asks for their sum. The speeds accelerate until each number is visible for a fraction of a second, well below the time it takes to read one aloud.
There is no opportunity to recalculate. The competitor either adds each number as it appears, carrying a single running total forward, or loses the sequence entirely. In the marathon version the series runs long, so the difficulty comes from sustaining perfect addition at machine speed rather than from any single sum being hard.
The calendar event
Calendar calculation is a different kind of problem. Competitors are given dates from the range 1600 to 2099 and must name the day of the week each one fell on. The Gregorian calendar's leap-year exceptions across five centuries have to be absorbed into a system fast enough to run in under a second.
The winning time in 2024 sets the standard the silver medal was measured against: 125 dates in 51.24 seconds. Because only seven answers are possible, errors are unmistakable and guessing is worthless, so the placings reflect accuracy as much as speed.
Memoriad 2024 in full
The calculation programme covered ten-digit additions, won by Jeonghee Lee of South Korea ahead of the Indians Parmar Priyansh Kiritbhai and Tambe Vighnesh Vijay; eight-digit multiplications and six-digit square roots, both won by Shashank Jain of India; division by five-digit numbers, won by Kaloyan Geshev of Bulgaria; calendar dates; and the Flash Anzan marathon.
The six memory disciplines — numbers marathon, spoken numbers, flash numbers, binary digits, speed cards and number-shape recognition — were all won by Mongolian competitors. Entrants chose their own events rather than competing for an all-round title, and the results list no overall champion for 2024.
What is documented — and what is not
The firm record is the placing: second in the Flash Anzan marathon at Memoriad 2024, behind Jeonghee Lee, with the same results page also recording a silver in the calendar dates, at a competition held in the UAE from 6 to 10 November 2024.
The personal record is empty. No age or date of birth, no home town, no school or academy, no coach, no photograph and no interview appears in the source, and there is nothing on results before or after November 2024. Her scores and times in the two disciplines are not published alongside the placings, so the margins behind the winners are unknown.
| Person | Country | Milestone | Age / Stat |
|---|---|---|---|
| Siddhi Mukesh Jain | India | Silver in Flash Anzan marathon and calendar dates, Memoriad 2024 | — |
| Granth Thakkar | India | Winning the Mental Calculation World Cup 2014 | — |
| Mekan Nurgeldiyev | Turkmenistan | Under-12 bronze, Junior Mental Calculation World Championship 2026 | — |
| Abhilakshya Arora | India | Winning the under-20 Junior Mental Calculation World Championship… | — |
| Arshika Gupta | India | Under-12 world champion, mental calculation, 2026 | — |
What is documented — and what is not
✓ Documented
- Second place in the Flash Anzan marathon at Memoriad 2024, behind Jeonghee Lee (World Mental Calculation)
- Recorded as silver medallist in the calendar dates on the same results page
- Memoriad 2024 held 6–10 November in the UAE with 121 calculators from 20 countries
? Unverified, disputed or wrong
- No individual times or scores published for either of her disciplines
- No age, date of birth, home town or school in the source
- No record of results before or after November 2024
Questions people ask about Siddhi Mukesh Jain
What did Siddhi Mukesh Jain win at Memoriad 2024?
Silver in the Flash Anzan marathon and silver in the calendar dates, according to the World Mental Calculation results.
What is Flash Anzan?
An event in which numbers are flashed on a screen for fractions of a second each and the competitor must produce their sum, with the speed accelerating through the run.
Who beat her in Flash Anzan?
Jeonghee Lee of South Korea, who also won the ten-digit additions at the same competition.
How old is Siddhi Mukesh Jain?
No source in this record gives an age or date of birth. The results page lists names, countries and placings only.
Is Siddhi Mukesh Jain on Wikipedia?
No Wikipedia article was found. The World Mental Calculation results page is the primary published record.
What times did she record?
The published results give her placings but not her individual times or scores in either discipline.
Where is she now?
No source in this record says. The published trail ends with the December 2024 results.
Which country dominated the memory events?
Mongolia, which won all six memory disciplines at Memoriad 2024.
Quick quiz: how well do you know Siddhi’s story?
In which event did Siddhi Mukesh Jain take silver behind Jeonghee Lee?
What does Flash Anzan require?
Which country won all six memory disciplines at Memoriad 2024?
Sources
- Memoriad 2024: Results — World Mental Calculation, 2024-12-14
Checked by the Geniuses.club editorial team. Ages are given as of September 2026.
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