Even though it's probably been done thousands of times, I made a sudoku solver in C++.
##To run (UNIX systems)
###Clone this repo
git clone https://github.com/tylerjdurden/sudoku-solver
###Change directories
cd sudoku-solver/
###Build the project
make
###Run the project
make run
From here, I'd recommend just reading in from standard keyboard input. Although, some puzzles are available to read from file in the puzzles/ directory!