Pseudoko

a 9x9 sudoku generator and solver

The solver:

solves easy to hard Sudoku (puzzles that requires no guessing)

The generator:

Generates boards that can be solved by the solver.

• The generator is limited to a certain number of board as it doesn’t use backtracking to generate the boards but shuffling a systematically generated board.

Files

• Solver.hs : the solver script
• gen.hs : the generator script
• Helper.hs : contains some helper functions used in the solver and generator.
• Boards.hs : some sample boards to test

Use

Solver

• load the script

:l Solver.hs

• to solve a sample board solve "board name"

solve hard

• to solve anyboard solve [[board row]]

solve [[9,1,0,4,0,2,0,5,7],[5,0,6,0,9,0,0,0,0],[0,0,2,6,0,1,3,9,0],[0,0,0,0,0,8,2,0,0],[8,2,0,0,0,0,0,6,9],[0,0,3,7,0,0,0,0,0],[0,6,5,1,0,9,8,0,0],[0,0,0,0,4,0,9,0,5],[3,7,0,2,0,5,0,4,6]]

Generator

• load the script

:l gen.hs

to generate a board

play

Sample boards

list of boards ready to test:

• easy
• med
• hard
• evil