sugoku is a basic Sudoku solver, written in Golang.
It takes a raw input string representing a sudoku grid (where 0 means empty) and tries to solve it using a simple backtracking algorithm. The idea was not to make it as efficient as possible, but just to play a bit with Golang features.
Such inputs can be found on many sites, among others here.
Below is an example demonstrating how the solver works.
004300209005009001070060043006002087190007400050083000600000105003508690042910300
_ _ 4 3 _ _ 2 _ 9
_ _ 5 _ _ 9 _ _ 1
_ 7 _ _ 6 _ _ 4 3
_ _ 6 _ _ 2 _ 8 7
1 9 _ _ _ 7 4 _ _
_ 5 _ _ 8 3 _ _ _
6 _ _ _ _ _ 1 _ 5
_ _ 3 5 _ 8 6 9 _
_ 4 2 9 1 _ 3 _ _
8 6 4 3 7 1 2 5 9
3 2 5 8 4 9 7 6 1
9 7 1 2 6 5 8 4 3
4 3 6 1 9 2 5 8 7
1 9 8 6 5 7 4 3 2
2 5 7 4 8 3 9 1 6
6 8 9 7 3 4 1 2 5
7 1 3 5 2 8 6 9 4
5 4 2 9 1 6 3 7 8
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent