The International Young Naturalists' Tournament (IYNT) is the international counterpart of the national competition. Teams from all over the world compete against each other and a diverse social program promotes social contact of members from different teams.



To participate at the IYNT, you have to be part of a national team. The Swiss team is selected at the national tournament, the SYNT. 

Register here to be part of the SYNT and try out for team representing Switzerland at the IYNT!

In case of questions please contact us.


Learn more about the international organization behind the IYNT:

iynt logo


The preparation for this year’s IYNT started right after the SYNT, when the team was announced and gathered for a first meeting with parents, to discuss the logistics. Another five meetings with the whole team later, and many more individual meetings of coaches and participants, we gathered for the final preparation, before leaving for the Belarusian capital Minsk, where the IYNT 2019 was taking place. 

On the final day of preparation, everyone gathered bringing along their suitcases. Final experiments were done, and the presentations were improved further. After some final training on how to prepare an opposition, we headed for the airport to check-in the luggage. This allowed everyone to sleep a little longer on Sunday morning, before meeting again at Zurich airport. 

This week we managed what we just narrowly missed last year: winning the IYNT trophy!

Preparation for this year’s IYNT started somewhat early, but definitely kicked off fully after the SYNT in March. In the last months, Ester, Lilly, Lohitsai, Lucas, Michael and Samuel worked hard. Investigating the process of making quark, playing tunes on bottles, investigating properties of granular materials and many other interesting problems.

On July 3rd it was finally time to fly to Tbilisi, Georgia, to test, how well prepared we were. This year we were going to meet 15 teams from 9 countries.

From the 5th to the 12th of July the 6th International Young Naturalists' Tournament (IYNT) will take place in Tbilisi, Georgia. For more information about this location refer to the IYNT webpage.

Switzerland will send a team of six students to participate at the IYNT in Georgia. There the student will have the chance to present their findings on an international stage, meet science enthusiasts from all over the world and experience a new culture.

Do you want to have the chance to travel to Georgia? Register here to be part of the SYNT 2018 and compete for a place in the Swiss IYNT Team!

The International Young Naturalists' Tournament (IYNT) is the international counterpart to the SYNT. In contrast to the SYNT, students from all over the world participate. The participants are aged 12 through 16. The age limit is set such that participants of the IYNT must not turn the age of 17 years during the calendar year of the respective IYNT competition.

The format is similar to the SYNT: Three teams (each consisting of 6 students) compete against each other in so called Science Fights. They take turns presenting and defending their solution to a given problem, criticizing the solution of the opposing team and reviewing the performance of the two preceding teams. The performance of all three teams is assessed by a jury. The teams have to try to convince both their opponents as well as the jury of the quality of their scientific work and results and of the understanding of physics.
The whole tournament is accompanied by an extensive social program and usually lasts eight days.

More information about the IYNT and the organization behind the IYNT can be found on their website.

The 5th International Young Naturalists' Tournament will be held in Nanjing, China on June 30—July 4, 2017. The local organizer of the 5th IYNT 2017 is Nanjing Foreign Language School, one of the seven oldest Foreign Language Schools in China and one of the top Chinese schools.

You want to be a part of the team of six students that get to travel to China to meet science enthusiasts from all over the world and compete against them?

Register here to be part of the SYNT 2017 and try out for our team representing Switzerland at the IYNT 2017!

Read the official press release (in German).


After weeks of preparation, we departed to China on Wednesday last week. Even though we felt well prepared with many good presentations, we went with mixed expectations, as it was the first time for all of us.
Arriving slightly delayed in Nanjing, the tournament started almost immediately for us with the opening ceremony. There, amongst other things, the 18 teams from 12 countries were asked to introduce themselves and their country in three minutes in an 'artistic' way, wich was graded by a jury. Our humorous slideshow combined with the distribution of some Swiss chocolate was well received and we placed only behind one of the local teams.

Early the next day, the tournament started for real with two science fights for all teams. In the morning, we went up against one of the Chinese teams and team Kazakhstan. Our hopes of starting well into the competition were fulfilled with our team winning the fight handily against the underwhelming Chinese and the even weaker Kazakhstani. Simran's report, Michael's opposition and Nadine's review got us together with the team's help a full 42.5 points, more than the two other teams combined. Only one other team managed to score higher that morning; The home-team "China-NFLS LaplaceWitches".

Round 2 in the afternoon looked like a much tougher fight, as we had to go up against the previous winners from Georgia (who placed 4th in the morning) and another Chinese team. But with a stellar round of 46.0 points we narrowly beat the Georgians and cut the deficit to the leading Chines more than in half.

On the next day an excursion to the Confucius temple was organised. However, in the morning we first visited the mausoleum of Dr. Sun, who has been an important figure in the history of Nanjing. For lunch we got the possibility to witness, that even American fast food chains are not everywhere the same. After another stop at a museum on the history of the region around Nanjing, we finally got to the Confucius temple. Dinner was served in a hotel nearby.