Microsoft and our third-party vendors use cookies to store and access information such as unique IDs to deliver, maintain and improve our services and ads. If you agree, MSN and Microsoft Bing ...

Sudoku fans, it’s time to really crunch some numbers. Give your mind the ultimate test on the most difficult numbers puzzle each day — and challenge yourself to make the impossible possible.

All the Latest Game Footage and Images from Ultimate Sudoku Collection: Gattai-3 Diagonal Pack 250 puzzles of “Gattai-3 Diagonal Sudoku” Advertisement All the Latest Game Footage and Images ...

"Engaging in brain-stimulating activities such as puzzles, chess, and sudoku can keep the brain active and help prevent Alzheimer's," said Dr Amit Srivastava, Director of Neurosurgery at Aakash ...