‘Amazing’ Sudoku trick even 'best solvers' don't know and can find answer for 'extreme' problem

If you're an avid Sudoku player or even a new starter, this trick may just be the answer to never leaving a puzzle unsolved ...

Sudoku 'game changer' helps 'even the best solvers' to finish 'unsolvable' puzzles

If you're a Sudoku fan, then chances are you'll love to get your hands on a good brain teaser puzzle. But with so many ...