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 ...

Just Splitting Mahjong Tiles Leads to a Massive Flowchart—The Invention of Recursive Functions

When studying programming, you notice something strange.Processes that are extremely complex for humans to think through can ...