Why a Sudoku-solving program looks smart: Recursion, backtracking, and the idea of 'trying from the most likely failure points'

I was thinking about a program to solve Sudoku.You fill a 9x9 grid with numbers from 1 to 9. The same number must not be ...
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Recursion in Python | Cambridge A-Level 9618 CS |PPT+Worksheets+Worked Examples+MCQ+Marking Scheme

Understand the concept of recursion in Python. Learn how functions can call themselves repeatedly. Solve problems using recursive techniques. Differentiate between recursion and iteration. Develop ...