The key to improving concentration isn't powering through Sudoku puzzles without stopping. Taking short breaks between ...

All four cells have the same two candidates left (in real Sudoku, not all cells have to hold all of the UR candidates)." ...

As the country’s Swifties know all too well, Taylor Swift is bringing her Eras tour to Canada. And that means everyone lucky ...

Play our daily hard sudoku here. Plus, you can let us know what you think of the puzzles by emailing at hey@metro.co.uk. We look forward to hearing from you.

Play our daily hard sudoku here. Plus, you can let us know what you think of the puzzles by emailing at hey@metro.co.uk. We look forward to hearing from you.

The World Sudoku Championships start on Monday, with competitors from 31 countries set to spend 28 hours solving the toughest ...

In a typical four-year term, a president replaces about one-quarter of the country’s 870 active federal judges, across both ...

Known as the “Godfather of Sudoku,” Kaji created the puzzle to be easy for children and others who didn’t want to think too hard. Its name is made up of the Japanese characters for “number ...

Jeffrey Guan, the highly-rated young Australian, has vowed to continue chasing his ambition of becoming a top professional despite having lost sight in his left eye after a freak on-course accident ...

(1) A part of a program that has been declared as unchanging. For example, a constant is hard coded and remains the same throughout the execution of the program. (2) Programming code that solves a ...

But even as every doctor we see continues to give us the thumbs-up, I’m finding it hard to comprehend. Like Charlie Brown ...

Get all three sports-related questions of varying difficulty (easy, medium and hard) and you claim the Herald hat-trick. Want more quizzes? Test your knowledge in the Herald’s Morning quiz and ...