Our teams
- Quantitative research & machine learning
  We find patterns in noisy, real-world datasets to predict movement in global financial markets – blending mathematical precision with state-of-the-art machine learning. Learn more
- Engineering
  We design and maintain the robust infrastructure and high-performance platforms that transform bold research into real-world results. Learn more
- Technology Innovation Group
  We scout, test and integrate the latest technologies — ensuring our teams stay at the forefront of what’s possible. Learn more
- Open-source software
  We partner with and contribute to the open-source community, building world-class tools that benefit our research and the wider world. Learn more
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GRiddles Series C

Back to GRiddles

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The puzzles:

Rule reminders:

Each puzzle is open for 28 days
The competition runs from April – November
Answer the puzzles correctly to be in with a chance of winning £1,000
Puzzles 4, 8 and 12 are the hardest. Be the first to submit the correct solution to win £2,000

Looking for your next challenge?

If you enjoy exploring difficult questions and finding new ways to approach them, discover where your skills could take you at G-Research.

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