In 2012, Finnish mathematician Arto Inkala claimed to have created the "World's Hardest Sudoku". | Sudoku puzzles, Sudoku, Difficult puzzles
World's hardest sudoku: Can you solve Dr Arto Inkala's puzzle? - Mirror Online
World's Hardest Sudoku Puzzle Cross Stitch Modern Pattern | Etsy
GitHub - MarionBarbee/Sudoku_solver: Solves all the world's hardest Sudoku puzzles including all from Dr. Arto Inkala, U of Helsinki (Professor of Mathematics).
Arto Inkala teki maailman vaikeimman sudokun? - Kotimaa - Ilta-Sanomat
Testaa taitosi: Suomalaistohtori kehitti maailman vaikeimman sudokun - Kotimaa | HS.fi
World's toughest sudoku is here... can you crack it?
The World's Hardest Sudoku - try it now - The TechGears
The world's hardest sudoku - solved | Newspapers | The Guardian
The world's hardest-ever sudoku?
AI Escargot - The Most Difficult Sudoku Puzzle by Arto Inkala
The 10 Hardest Logic/Number Puzzles
Global Solution For Sudoku by Zhong-qi Ma, Paperback | Barnes & Noble®
Can You Solve the Hardest-Ever Sudoku? - ABC News
Introduction - Sudoku and Solver
World's hardest sudoku puzzle ever: Can you solve the most baffling brainteaser ever devised? - Mirror Online
Arto Inkala Espoon Vihreät Kunnallisvaalit 2012, Espoo
Arto Inkala Mrph 2 | Sudoku, Free printable word searches, Sudoku puzzles
Books, papers and other products: AI Sudoku top10 The work contains ten most difficult puzzles created by AI sudoku generator, many of these puzzles will be also in the top10 of world's most difficult. Only very talented sudoku hobbyist and best sudoku ...
The World's Hardest Sudoku - try it now - The TechGears
_ AI SUDOKU _ Suomeksi Home Page Author Books Techniques Top10 Download & Donate Contact AI Sudoku is a brand name for difficult and challenging sudoku puzzles. The valid rating method guarantees, that the rate of correct difficulty level can be ...
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 - solved | Newspapers | The Guardian
