We are excited to announce that the Baltic Olympiad in Informatics (BOI) 2025 will take place in Toruń, Poland, from April 24 to April 29. 

The official contest will be held:
Dates: Saturday, April 26 and Sunday, April 27
Time: 09:00 — 14:00 (Central European Summer Time, UTC+2)
Live scoreboard: ranking.boi25.pl*

The public mirror contest will be held:
Dates: Saturday, April 26 and Sunday, April 27
Time: 10:00 — 15:00 (Central European Summer Time, UTC+2)
Contest link: mirror.boi25.pl (available starting Friday, April 25th)
Registration for the mirror contest will be available starting Friday, April 25 at 10:00 (CEST, UTC+2).
A practice session will be held on Friday, April 25, from 16:30 to 23:59 (CEST, UTC+2).

Technical details:
Format: IOI-style problems and scoring system.
Available languages: C++ and Python.
For all technical details, see the official website at boi25.pl.
The problem statements will be provided in English and national languages of the participating countries.**

- BOI 2025 Organising Team

* The scoreboard will be available after the mirror contest starts (after 10:00).
** Assuming delegations choose to translate them. If your country participates in BOI and you are interested in problems statements in your national language, please check with your BOI delegation.