Solving sudoku puzzles is good for the brain - right? But actually solving them can be so hard.
This API implements a brute-force backtracking algorithm for solving the typical 9x9 sudoku puzzle.
Submit a puzzle with a request that looks like
POST /api/solve HTTP/1.1
Host: your-host
Content-Type: text/plain
090008604
600019000
048625000
020080716
070000080
385070020
000861540
000350002
507200030
the response will also be text/plan and contain the solved puzzle.