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Welcome to Algoraph!

Algoraph (formerly Graph Games) is a tool to assist in solving graph-related problems. It includes a suite of puzzle games that allow you to help solve interesting problems while having fun. Although we know the answers to most of the puzzles, there are some that are unknown—You could be the first to solve one of these!

Algoraph also contains an interface that allows you to experiment with the puzzles, including the ability to run various algorithms on the puzzles. These features require special permission to access, so if you are interested in seeing some of the more advanced capabilities of the software, contact the Principle Investigator (see the Credits page).

The following games collections are currently available:

  • Pebble It: Four games to help solve graph pebbling problems.
  • Power Graph: Two games to help solve graph covering problems.
  • Portal Lord: One game to help solve graph bandwidth problems.
  • Lights Out: One game to help solve problems related to the classic Lights Out game. (This one is still in development, so you won't find many interesting puzzles for it yet.)

We are hoping to present more substantial problems in the near future, so keep checking back to see what is new. That's enough details for now. Go to the Download page to load the game and give it a try. If you run into any problems, see the FAQ page.

Recent News

Algoraph has moved! 2018-05-24 13:22:15.0
Algoraph is not located at http://algoraph.hope.edu. But if you are reading this, you probably already know that.

We're still here! 2017-06-22 12:34:22.0
We've been silent online for a while, but we're still actively working on solving graph problems!

Graph Games is now Algoraph! 2012-06-22 12:40:23.0

We have changed the name to reflect a change in focus of the project. Although the games are still there and we will likely add more (slowly), our focus is on providing a tool for use by researchers. We have incorporated the ability to run various algorithms on the puzzles, and continue to add more problem types and algorithms.

If you are interested in seeing what the software is really capable of, your account needs to be given permission. Contact the Principle Investigator (See the Credits page) for more information.