Combination
Combination is a puzzle game originally released on the iPhone in 2008. The code for the iPhone version has long since been lost, but the game has been reimplemented in LOVE2D.
The game was discussed in the paper:
Christopher Jefferson, Wendy Moncur, and Karen E. Petrie. Combination: Automated Generation of Puzzles with Constraints. Proceedings of the 2011 ACM Symposium on Applied Computing (SAC ’11). ACM Digital Library
Play in your browser
The web version uses the LoveJS Player by Alex J Griffith (MIT license).
Download
Combination is also available for free from itch.io.