In 2012, Finnish mathematician Arto Inkala claimed to have created the "World's Hardest Sudoku". | Sudoku puzzles, Sudoku, Difficult puzzles
Introduction - Sudoku and Solver
Can You Crack the World's Toughest Sudoku? | Fox News
The hardest Sudoku puzzle: Escargot by Arto Inkala - 9GAG
The Worlds Hardest Sudoku Puzzle
AI Escargot - The Most Difficult Sudoku Puzzle by Arto Inkala
The 10 Hardest Logic/Number Puzzles
Mathematician Arto Inkala creates world's hardest Sudoku, 'Everest' | Metro News
It took three months to create, so how long will it take to crack ...the world's hardest Sudoku? | Daily Mail Online
The world's hardest sudoku? | Newspapers | The Guardian
Magic Word Square: Hardest Sudoku Puzzle
It took three months to create, so how long will it take to crack ...the world's hardest Sudoku? | Daily Mail Online
World's toughest sudoku is here... can you crack it?
GitHub - MarionBarbee/Sudoku_solver: Solves all the world's hardest Sudoku puzzles including all from Dr. Arto Inkala, U of Helsinki (Professor of Mathematics).
The world's most difficult sudoku puzzle :: japanesetranslator.co.uk
The World's Hardest Sudoku - try it now - The TechGears
Figure 10 from An evolutionary approach to sudoku puzzles with filtered mutations | Semantic Scholar
Can you solve the world's hardest Sudoku?
World's hardest sudoku puzzle ever: Can you solve the most baffling brainteaser ever devised? - Mirror Online
World's hardest sudoku: Can you solve Dr Arto Inkala's puzzle? - Mirror Online
Magic Word Square: Hardest Sudoku Puzzle
World's Hardest SUDOKU 2010 ; part 7 of 7 / final - YouTube
World's Hardest Sudoku Puzzle Cross Stitch Modern Pattern | Etsy
The 10 Hardest Logic Puzzles Ever Created
