True test of genius or monumental waste of time? Can you solve the hardest ever Sudoku?

Finnish mathematician Arto Inkala spent three months designing a Sudoku puzzle with only one solution. On the scale of 1-5 in difficulty, he rated the puzzle as 11.

Fiction - Bibliophile Books

1248 by Jewish News - Issuu

True test of genius or monumental waste of time? Can you solve the hardest ever Sudoku?

What makes a good puzzle game? What is lacking in many puzzle games that are flooding the market today? - Quora

How to Solve the Hardest Logic Puzzle Ever - Nautilus

If science can't explain some phenomena, does it follow that the whole picture may also be incorrect? - Quora

About the Book Our hardest-yet Sudoku collection, handcrafted by the puzzle masters at Nikoli in Japan (whose Workman Sudoku books have 1.3 million

Genius-Level Sudoku - by Nikoli Publishing (Paperback)

Nurturing the Dreams of Children - CBSE

How do I solve the world's hardest sudoku? - Puzzling Stack Exchange

Garrett: Games Addict