Authors: Nikoli Publishing

  • Genius-Level Sudoku Over 300 Super-Difficult Puzzles from the Japanese Masters Who Invented the Game — Nikoli Publishing

    Genius-Level Sudoku Over 300 Super-Difficult Puzzles from the Japanese Masters Who Invented the Game — Nikoli Publishing

  • Expert Sudoku — Nikoli Publishing

    Expert Sudoku — Nikoli Publishing

  • Original Sudoku Page-A-Day® Calendar 2025: 365 Puzzles from the Editors at Nikoli — Nikoli Publishing

    Original Sudoku Page-A-Day® Calendar 2025: 365 Puzzles from the Editors at Nikoli — Nikoli Publishing

  • X-treme Sudoku — Nikoli Publishing

    X-treme Sudoku — Nikoli Publishing

  • The Biggest, Bestest Book of Sudoku — Nikoli Publishing

    The Biggest, Bestest Book of Sudoku — Nikoli Publishing