If you’re ready for serious mental workouts, Sudoku Quest: Hard delivers. With challenging grids that demand advanced strategies, this edition pushes you beyond comfort and into true problem-solving mastery.

The special twist in Sudoku Quest: Hard is its built-in interactive aid: every puzzle has a QR code that lets you reveal a number or double-check your progress when needed. It’s like having a strategic assistant ready to step in during the toughest moments.

💡 Interactive Support
Use the QR code to reveal numbers or verify tough spots — like having a strategic partner during tricky puzzles!

Illustration only. The book features unique puzzles with QR codes.

Inside the book, you’ll find:

• 150 Sudoku puzzles, all set to hard difficulty.

• Interactive QR codes for smart assistance.

• Large print grids (8.5 x 11 in.) to aid concentration.

• Two puzzles per page, maximizing solving time.

• Solutions included at the back.

• Track your progress with dedicated pages.

This is the third stage of your Sudoku Quest — perfect for solvers seeking to sharpen advanced reasoning.