International Mathematical Olympiad

Annual Regulations for IMO 2023
January 2023
All deadlines (times and dates) are at 23:00 UTC (Japan is in UTC+9 all year). All sums of money
mentioned are denominated in JPY.
See also general regulations, https://www.imo-official.org/documents/RegulationsIMO.pdf
1.

The Host City for the 64th International Mathematical Olympiad (IMO 2023) is Chiba, Japan.
The main site is Makuhari Messe and APA Hotels & Resort Tokyo Bay Makuhari. The
leaders’ site (until Sunday July 9th 2023) will be Hotel Nikko Narita. From Monday July 10thonwards, the whole IMO will be based at the main site.

2.

The Host Organization for IMO 2023 is The Mathematical Olympiad Foundation of Japan.

3.

The official programme for Leaders and Observers A begins on (arrival day) Monday July
3rd 2023 and ends on (departure day) Thursday July 13th 2023. The shortlisted problems
will not be released before Monday July 3rd 2023.

4.

The official arrival day for members of the IMOB is Sunday July 2nd 2023. Leaders andObservers A may arrive on Sunday July 2nd 2023 on payment for the extra day of JPY 30,000
for a single room for each person, and JPY 20,000 for shared accommodation.

5.

The official programme for Deputy Leaders, Contestants and Observers B and C begins on(arrival day) Thursday July 6th 2023 and ends on (departure day) Thursday July 13th 2023.

6.

The Contest days for IMO 2023 will be Saturday July 8th and Sunday July 9th. AllContestants must have been born on or after July 2nd 2003.

7.

Participation of countries and territories must be confirmed online no later than Wednesday
February 28th 2023.

8.

Registration of Leaders, Deputy Leaders, Observers and the number of Contestants must becompleted online no later than Friday April 21st 2023.

9.

Registration of Contestants must be completed online no later than Wednesday May 31st 2023.

10. Registration of travel details of Participants and Observers must be completed online nolater than Thursday June 15th 2023.
11. The official arrival and departure sites for IMO 2023 are the following preferred locations:
Narita Airport and Haneda Airport.
12. All accommodation at the main site is normally in shared rooms. Leaders will
move to the main site on Sunday July 9th 2023. Accommodation at the Leaders'site is in single rooms for Leaders and in shared rooms for Observers. Leaders may
apply for a single room upgrade at the main site (for a fee). The deadline for receiptof such an application is Friday April 21st 2023. Since extra accommodation islimited, full payment in cleared funds of the following charge must be made by
Friday May 19th 2023.
•Single room upgrade for a Leader: JPY 40,000.

International Mathematical Olympiad
Applications received without the full payment of the charges will be rejected. No refunds
will be given.
13. Applications for Observers to accompany the participants must be made by Friday April
21st 2023. Observers A may apply for a single room upgrade at both sites (for a fee). Thedeadline for receipt of such an application is Friday April 21st 2023. Observers B and C
may also apply for upgrades to single rooms at the main site (for a fee). Since extra
accommodation is limited, full payment of the following charges must be made incleared funds by Friday May 19th 2023:•Deputy Leader: Single room upgrade : JPY 70,000 .

•Observer A (accompanying the Leader): JPY 300,000 (shared accommodation).

•Observer A: JPY 100,000 for an upgrade to single room.

•Observers B and C: JPY 200,000 (shared accommodation).

•Observers B and C: JPY 70,000 for an upgrade to single room.

Applications received without full payment of the charges will be rejected. No refunds
will be given.
14. Proposals for problems must be received by Sunday April 2nd
submitted via the portal at the IMO official website.

2023. Proposals must be

15. Countries that need an official invitation in paper form via (old style) mail, should
inform info[at]imo2023.jp before Saturday April 1st 2023.
16. Each Leader must ensure that every participant from their country has appropriate travel andhealth insurance, including Covid related costs, for the relevant period around IMO 2023.
Expenses for any quarantine hotel on arrival must be paid by each individual participating
country. It is recommended to purchase flexible tickets so that flights may be changed for any
reason (including Covid).
17. Covid: During the IMO, all participants must adhere to the organizer’s Covid protocol,
including testing forCovid. The current Covid policy in Japan
is https://www.mhlw.go.jp/stf/covid-19/bordercontrol.html.
18. Leaders must ensure that all child protection measures which are legally enforced in theircountry of origin are correctly observed.
19. For each student less than 18 years old, Deputy Leaders must bring legally notarized letters,
signed by the parents (or legal guardians), which state that, in case of medical emergency, theLeader, Deputy Leader or Observer should have the right to approve any necessary
medical procedure at the IMO. This letter (in English) should state which of the Leader, Deputy
and any Observers is (or are) in loco parentis (i.e. they have the legal role of parents of thechildren aged under 18 in their team during IMO 2023).
20. IMO General Regulation 1.10 concerns bullying, discrimination and harassment. This
regulation is in addition to the laws of Japan. The laws of Japan take precedence over General
Regulation 1.10, and allegations of serious misconduct will be reported to the police.
21. Team members of Country X should normally be citizens of Country X, but genuine long term
foreign residents who are not citizens (and who are being educated in Country X) are permitted
to be in the IMO team of Country X provided that the student will spend at least three fullacademic years being educated in Country X. Such a foreign education must be for a bona fide

International Mathematical Olympiad
reason (e.g. family location). Note that IMO tourism is not permitted: a student may not attempt
the final selection examinations of more than one country in a given IMO year. A student whochanges their country of residence artificially in order to attempt to qualify for the new country’s
IMO team, is in fact not allowed to represent the new country. Members of a delegation of any
country who conspire to subvert (or attempt to subvert) IMO selection regulations risk
suspension from IMO participation. Such a suspension will be reported to the Ministry ofEducation of the country concerned.
22. The host country can invite 6 students from suspended countries to compete remotely as privateindividuals (not as a team). The exact protocol for their participation (translations, exam,marking etc.) will be provided in due time.
23. Remote sitting may be permitted but only when Force Majeure makes it impossible to travel toJapan (e.g. full Covid lockdown, armed conflict...). Note that financial reasons are not enough.
Countries who wish to apply for permission to sit remotely should send evidence as to why
they cannot travel to Japan. A joint IMOB-Japanese Committee will review the evidence andin well-founded cases may allow remote sitting. Note that decisions will not be made before
the deadline for submitting contestant names (i.e., May 31st).
24. Countries which and people who have been given explicit permission by the Japaneseorganizers and the IMO Board may sit IMO2023 in their own countries or territories. Suchexams must take place in an Exam Centre under the supervision of an independent IMO
Commissioner approved by the IMOB. The Exam Centre must be continuously monitored bothby the IMO Commissioner and by recording cameras. The recordings must be kept safe until
the Ethics Committee approves their destruction. The IMOB and Ethics Committee reserve theright to view these recordings.
The Exam Centre should mimic the conditions of a normal IMO Exam hall. If social
distancing is necessary, then the conditions in the Exam room must comply with local
regulations and guidelines.
Unless there is a special arrangement, the remote exams must take place at exactly the sametime as at IMO2023 in Japan. Appropriate language versions of IMO2023 exam papers will beprovided to the IMO Commissioner as PDFs before the start of each exam.
First half-hour Questions of clarification can be answered without reference to Japan with thehelp of guidelines which will be supplied. Photos or scans of all the written questions and thecorresponding written answers must be sent to the Ethics Committee by email at the time theanswer is given. The Ethics Committee may deduct marks from students if they judge that
unfair assistance has been given. Answers should be given according to the guidelines wherepossible. In addition to the questions in local languages, translations of question and answers
into an official IMO language should be supplied.
After each Examination, scans of all work should be uploaded for coordination which will beconducted remotely from Japan by the IMO2023 coordinators.
Note that, in accordance with General Regulation 6.5, participating countries which senddelegations to attend IMO2023 in person will have privileged access to the IMO2023 shortlist
before IMO2024. Remote attendance is not sufficient.