A few games for which I've coded up a solution; usually just to experiment with a new programming language or idea.
An attempt at a fast Sudoku solver. This implementation can solve the ``hardest'' sudokus -- those with the minimal 17 clues -- in about 4 milliseconds on average on my 2016 MacBook Pro, and often solves them much faster.
Solving Spelltower, which is a silly iPhone game that's basically Boggle with gravity. There are a bunch of game types, but the only deterministic one is tower mode.
Solves n-player Ghost.
Attempt to solve Connect 4 – unfinished; can only a fraction of possible games at the moment. Will possibly implement a knowledge-based approach in the future.