By the end of the third week, there are 876 registered participants from 69 countries (the list of countries is given below). In total, 58 solutions were submitted, out of which 13 were correct.
For this problem, I have decided to consider a solution as deserving full marks even if the answer for 2MT-strong B-fields is incorrect, as long as the formula gives a correct answer for ca 10 times weaker fields. However, those of you who have a good answer for 2MT-strong B-fields, have better chances of getting the best solution award.
Correct solutions were submitted by:
| First Name | Surname | Country | School/University | date | time |
| Vlad-Ștefan | Oros | Romania | 27/12/20 | 16:22:00 | |
| Oliwier | Urbański | Poland | 27/12/20 | 18:05:00 | |
| Zhening | Li | Canada | 29/12/20 | 04:10:00 | |
| Elio | Moreau | Italy | École Polytechnique Fédérale de Lausanne | 30/12/20 | 19:20:00 |
| Eddie | Chen | United States | 01/01/21 | 03:25:00 | |
| Antonia | Ghita | Romania | 03/01/21 | 11:49:00 | |
| Joshua | Teo | Singapore | 04/01/21 | 05:40:00 | |
| Nikita | Semenin | Russia | Moscow Institute of Physics and Technology | 08/01/21 | 19:40:00 |
| Yuechen | Zhu | China | Peking University | 11/01/21 | 05:47:00 |
| Batuhan | Keskin | Turkey | Boğazici University | 12/01/21 | 22:05:00 |
| Minh | Trang Dao | Vietnam | 15/01/21 | 09:11:00 | |
| Anastasia | Pozharkova | Russia | 16/01/21 | 07:27:00 | |
| Tevž | Lotrič | Slovenia | University of Oxford | 16/01/21 | 21:51:00 |
Participating countries: Algeria, Azerbaijan, Bangladesh, Belarus, Belgium, Bosnia and Herzegovina, Brazil, Bulgaria, Cambodia, Canada, China, Croatia, Czechia, Egypt, El Salvador, Estonia, Finland, Georgia, Germany, Greece, Hungary, India, Indonesia, Iran, Israel, Italy, Japan, Kazakhstan, Kenya, Korea, Kyrgyzstan, Latvia, Lebanon, Lithuania, Macedonia, Malaysia, Mexico, Moldova, Mongolia, Nepal, Nigeria, North Macedonia, Pakistan, Peru, Philippines, Poland, Romania, Russia, Saudi Arabia, Serbia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Thailand, Turkey, Turkmenistan, United Arab Emirates, United Kingdom, United States, Uzbekistan, Vietnam.