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With Quicklisp

1. Clone sudoku into your quicklisp local-projects directory.

   cd ~/quicklisp/local-projects
   git clone git@github.com:dmsurti/sudoku.git
   

2. Load with

   (ql:quickload "sudoku")
   

Without Quicklisp (But why?)

1. Ensure sudoku.asd is in your ASDF path.

2. Load with (asdf:oos 'asdf:load-op 'sudoku)

Define an incomplete board and solve it

3. Create an incomplete, unsolved sudoku board as follows:

   (setf board
         #(0 0 2 4 7 0 0 5 8 
           0 0 0 0 0 0 0 0 0 
           0 0 0 0 0 1 0 4 0 
           0 0 0 0 2 0 0 0 9 
           5 2 8 0 9 0 4 0 0 
           0 0 9 0 0 0 1 0 0 
           0 0 0 0 0 0 0 3 0 
           3 0 0 0 0 7 5 0 0 
           6 8 5 0 0 2 0 0 0))
   

4. To solve the sudoku board and print the solution run:

   (sudoku:print-board (sudoku:solve board))
   

Run the tests

1. You can run a test suite which tests 50 easy puzzles, 95 hard puzzles and 11 hardest puzzles.

   (asdf:oos 'asdf:test-op :sudoku)
   

   These puzzles were downloaded from http://norvig.com/sudoku.html.