# fact day (blogs) — RSS Amplifier Recent posts from the 1 feeds in the RSS Amplifier directory that cover fact day. Page: Feed: --- ## [Creating Sudokus with Python](https://www.sandropaganotti.com/2025/01/09/creating-sudokus-with-python/?utm_source=rss&utm_medium=rss&utm_campaign=creating-sudokus-with-python) _2025-01-08 · sandro · Flying memes_ Following from my previous post I’ve explored with an algorithm to create Sudokus by iterating from an empty grid by adding valid numbers to random cells and then invoking the solving function twice, once navigating the solution space from 1 to 9 and the other in reverse. If both solving functions return the same, valid, \[…\] ## [Solving Sudoku with Python](https://www.sandropaganotti.com/2024/12/29/solving-sudoku-with-python/?utm_source=rss&utm_medium=rss&utm_campaign=solving-sudoku-with-python) _2024-12-29 · sandro · Flying memes_ Just a small practice exercise that solves Sudoku by iterating over valid values for each cell and backtracking on errors. I like how compact the solution is, although probably not very performant. from pprint import pprint from math import floor from copy import deepcopy grid = \[\] content = None with open('startgrid.txt', 'r') as file: \[…\]