A simple Sudoku solver written in Rust.
Theoretically this solver should be able to solve any "solvable" puzzle.
To run use cargo run -- followed by the puzzle as one string starting in the
upper left corner of the puzzle and following each row indicating blank spots
with * characters.
For example:
cargo run -- \
"*4*1*5*2*8*76*34*5*2*****8*47*****51*********61*****43*6*****3*9*43*21*8*3*4*9*7*"
Simply run: cargo test