Jane Street Puzzles

My solutions to past Jane Street Puzzles

Some examples:

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Description

• 🤖 Python solutions for the Jane Street puzzles, using math, algorithms, and helpful Python libraries.
• 🎯 See https://www.janestreet.com/puzzles/current-puzzle/ for the current puzzle.
• 📚 See https://www.janestreet.com/puzzles/archive/ for all past puzzles.
• ⚡ I only post solutions to puzzles whose solution has already been released by Jane Street.

Solutions

Click on a checkmark in the table below to view the solution for that month.

	1	2	3	4	5	6	7	8	9	10	11	12
2014	✔	✔
2015								✔
2016			✔		✔
2017				✔							✔
2018		✔				✔		✔				✔
2019			✔	✔		✔		✔	✔		✔
2020		✔	✔			✔		✔		✔	✔	✔
2021	✔	✔		✔	✔			✔	✔	✔		✔
2022	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
2023	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
2024	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔
2025	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔	✔

Installation and usage

• Each puzzle in this repo has a corresponding python script, that can be run independently of others.
• I use uv (a modern package manager for Python, which is written in Rust and very fast) to manage the dependencies.
• To run the scripts in this repo with uv, follow these steps (but you can use whatever package manager you prefer)

# Install uv if you don't have it yet
curl -LsSf https://astral.sh/uv/install.sh | sh

# Clone the repository
git clone https://github.com/miguelbper/jane-street-puzzles.git
cd jane-street-puzzles

# Install dependencies
uv sync

# Run the solution of a specific puzzle (example)
uv run 2014/2014-01-sum-of-squares.py

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgements

• Jane Street for the puzzles.
• In addition to the libraries mentioned above, I also use Z3 and OR-Tools a lot in this repo. These libraries are great for constraint satisfaction / optimization problems.
• Other very nice repos containing solutions to Jane Street puzzles:
  • gowen100/Jane-Street-Solutions
  • evansemet/Jane-Street-Solutions
  • flameworks/JaneStreetPuzzles