The 3rd WEOI (2025) will be held on June 27th – 29th, in a hybrid format in Volterra, Italy.

Results

Full scoreboard

The full scoreboard is available at:
https://weoi.org/results/2025/

Tasks

Statements

Aqueducts
Decoration
Patricians
Roads

Solutions

Aqueducts
Decoration
Patricians
Roads

Gallery

Participating Teams

In alphabetical order

	Belgium On-site Team Leaders Robin Jadoul Petar Vitorac	Thomas De Bruyn Hasan Erdoğan Edward Rosseel Joaquim Schaeverbeke Alban Van Vyve Noé Zech
	France On-site Team Leaders Hugo Peyraud Magnin Oscar Fischler	Quentin Cottignies Ines Fischler Daniil Jarykaou Coraline Kalbfleisch Clemence Pham Julian Piau Yixuan Qu Hao Yuan Jiao
	Ireland On-site Team Leaders Suneet Mahajan Isaac Lee	Piotr Stelmaszek Weichen Huang Mykyta Telychko
	Italy On-site Team Leaders Dario Ostuni Lorenzo Ferrari	Niccolò Baronti Alessandro Damiani Leonardo Drago Alessandro Farcas Matilde Iannaccone Andrea Malmesi Sofia Maragò Diego Stocco
	Luxembourg On-site Team Leaders Pascal Zeihen Gilles Englebert	Alex Avila González Jae Ho Cho Raphael Johannes Le Goaller Omar Mouman Kinji Yoshida Sophie Zeihen Kaili Zhang
	Netherlands On-site Team Leaders Jelmer Firet Laura van der Lubbe	Boas Bakker Merel Beltman Karel Hofman Lucas Kuunders Chenyu Lin Frederique Scheffrahn Rens Van Der Avoird
	Portugal On-site Team Leaders Paulo Sousa	André Abreu Henri Campagnolo Tomás Faria Pedro Gonçalves Ricardo Mouro Diogo Rosado
	Spain On-site Team Leaders Jacobo Vilella Vilahur Amal Dokkar El Hamoudi	Andrii Basov Ricardo Batanero Moranchel Marc Bru Montoya Ariadna Franch Pérez Eulàlia Gaya Bretones David Lago Alonso Rodrigo Nieto Petinal Guillem Vizcarro Sánchez
	Switzerland On-site Team Leaders Charlotte Knierim Ferdinand Ornskov	Jonathan Braun Myriam Faltin Till Fischer Levin Glatz Hongjia Meng Andrej Ševera Jovian Soejono Ursus Wigger
	United Kingdom Hybrid Team Leaders Richard Forster David Mestel	Hanks Chong Adavya Goyal Seyoon Park Daria Sanina Isane Sekiguchi Kseniia Strelbytska Eva Tai

Schedule

Day	Time	Activity
June 27th (Friday)	13:30 – 19:00	Arrivals, registration, tourism Optional transfer to Volterra Games and sports at SIAF
	19:00 – 20:30	Dinner
June 28th (Saturday)	08:00 – 09:00	Breakfast
	09:00 – 12:00	Introduction / Practice
	12:00 – 13:30	Lunch
	14:00 – 19:00	Contest
	19:00 – 20:30	Dinner
	21:00 – 24:00	Activities at SIAF
June 29th (Sunday)	07:00 – 08:00	Breakfast
	09:00 – 11:00	Task explanation / Awards ceremony
	11:15 – 15:30	Departures, packed lunch

Environment

All contestants must participate using the same contest environment: a virtual machine which is mandatory to be running on their personal laptop.
As a reference, this is this year’s official virtual machine.
All contestants must be running from within this VM.

A guide to install and use the virtual machine can be found here.

Attention: This virtual machine has internet restricted to only allow access to the contest platform.

Regulations

Contributors

This year’s olympiad was made possible thanks to the contributions of:

Host contributors	Dario Ostuni Luca Versari Giorgio Audrito
Scientific contributors	Luca Versari Hugo Peyraud-Magnin Jeroen Kirjgsman Félix Moreno Peñarrubia Anna Khanova Charlotte Knierim Daniel Murphy Mikhail Pyaderkin
Technical contributors	Luca Versari Jacobo Vilella Eljakim Schrijvers
Design contributors	Jelmer Firet
Communication contributors	Jacobo Vilella Simon Mauras
Host Volunteers	Elia Soldati Filippo Casarin Francesco Lugli Lorenzo Ferrari