The 10 Hardest Logic/Number Puzzles
World's hardest sudoku: Can you solve Dr Arto Inkala's puzzle? - Mirror Online
Arto Inkala teki maailman vaikeimman sudokun? - Kotimaa - Ilta-Sanomat
Trying out an “expert” puzzle for the first time and I didn't get very far. The hint was to assume R6C2 to be 5 and then the next hint was to assume R7C8 to be 1. Does anybody know the logic in arriving at these hints? Thank you very much : r/sudoku
Can You Crack the World's Toughest Sudoku? | Fox News
Is suposed to be the hardest sudoku ver, and i have no idea what to do : r/sudoku
World's hardest sudoku puzzle ever: Can you solve the most baffling brainteaser ever devised? - Mirror Online
The 10 Hardest Logic Puzzles Ever Created
8. A very simple solution to a very difficult Sudoku ("Everest" by Arto Inkala) - YouTube
In 2012, Finnish mathematician Arto Inkala claimed to have created the "World's Hardest Sudoku". - 9GAG
What is the toughest sudoku in world? - Quora
Cfkouuy TrainsAredelayed - Sudoku Puzzle from mathematician Dr Arto Inkala, he says it's the hardest possible puzzle, giving it a rating at level 11 difficulty, assuming the average newspaper sudoku is level
Can You Solve the Hardest-Ever Sudoku? - ABC News
AI Escargot - The Most Difficult Sudoku Puzzle: Inkala, Arto: 9781847534514: Amazon.com: Books
Problem solved... sort of: Mathematicians come up with formula to complete every Sudoku (but trying to understand it could take even longer than doing the puzzle) | Daily Mail Online
AI Escargot - The Most Difficult Sudoku Puzzle (Paperback) - Walmart.com
Arto Inkala - Finland | Professional Profile | LinkedIn
Arto Inkala Mrph 2 | Maths puzzles, Sudoku puzzles, Sudoku
It took three months to create, so how long will it take to crack ...the world's hardest Sudoku? | Daily Mail Online
Mathematician Arto Inkala creates world's hardest Sudoku, 'Everest' | Metro News
Figure 10 from An evolutionary approach to sudoku puzzles with filtered mutations | Semantic Scholar
Figure 10 from An evolutionary approach to sudoku puzzles with filtered mutations | Semantic Scholar
Dünyanın en zor sudokusu - Haberler - Teknokulis
The world's hardest sudoku? | Newspapers | The Guardian
SudokuWiki.org - Arto Inkala Sudoku
Testaa taitosi: Suomalaistohtori kehitti maailman vaikeimman sudokun - Kotimaa | HS.fi
