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 ...
I Programmer

The Trick Of The Mind - Recursion

While not an algorithm itself, the technique of recursion is used within algorithms – particularly divide-and-conquer algorithms. It is an advanced idea and potentially confusing. The status of ...