Focus on how you make progress, and how you think about what to look for next. At its core, Sudoku is a pattern recognition puzzle. As you solve more of them, you will slowly get better.

By Dion Dassanayake 15:08, Fri, Oct 14, 2022 | UPDATED: 15:08, Fri, Oct 14, 2022 Bookmark Secret trick will help you solve any sudoku puzzle you are struggling with (Image: GETTY) ...

Back in 2020, Reddit user /u/KrakenOfLakeZurich created a Sudoku solver in Microsoft Excel. It only uses formulae and conditional formatting, and it's available for both Excel and LibreOffice Calc.

Sudoku is like any other logic puzzle, in that it relies on deductive reasoning for its solution. There are numbers in the game, but no arithmetic is required to figure out where they go.