def testEvil(self):
solver = SudokuSolver()
solver.solve('../evilpuzzle.in')
result = solver.printBoard()
assert 'x' not in result, result +'\n' + solver.printTilePossibleValues()
pass
def testHard(self):
solver = SudokuSolver()
solver.solve('../hardpuzzle.in')
result = solver.printBoard()
assert 'x' not in result, result
pass
