About Eternity II
One puzzle. A global search.
Eternity II is a famous edge-matching puzzle: 256 unique pieces must form a single 16 × 16 board. The number of possible arrangements is immense. Finding a better board takes persistence, mathematics, and a community willing to search together.
Our goal
We are building an open community effort to push the best known Eternity II score further. Every matching edge matters. A board with 467 matched edges or more would be a major milestone, and every computer can help explore the enormous space between today’s best candidates and that next discovery.
1. Receive
BOINC gives your computer a small, independent part of the search. You choose how much CPU time it may use.
2. Explore
The Eternity II solver applies the project’s optimized search methods to test promising arrangements and prune impossible branches.
3. Share
Completed work returns to the project, where results are checked and strong boards become part of the collective progress.
Why take part?
This is a puzzle with a real frontier. Your computer is not running a demonstration: it is searching territory that may never have been examined before. A few spare CPU cores at home, combined with thousands of hours from other volunteers, can reveal the next record.
Participation is free. BOINC runs in the background and lets you set its CPU and schedule limits. You can pause or leave at any time.
Ready to contribute?
- Create an account using an invitation code.
- Install BOINC on Windows, Linux, or macOS.
- Add Eternity II to BOINC Manager and sign in with your new account.
Your first completed task could be the one that moves the record.
Built in the open
Eternity II is a volunteer project. We publish progress through the project pages and message boards, welcome useful ideas, and keep improving the solver as the search teaches us more about the puzzle.
