Authors: Frank Longo

  • Pointer Crosswords — Frank Longo

    Pointer Crosswords — Frank Longo

  • Ninja Assassin Sudoku: Green Belt — Frank Longo

    Ninja Assassin Sudoku: Green Belt — Frank Longo

  • Absolutely Nasty® Sudoku Level 2 — Frank Longo

    Absolutely Nasty® Sudoku Level 2 — Frank Longo

  • Absolutely Nasty® Sudoku Level 1 — Frank Longo

    Absolutely Nasty® Sudoku Level 1 — Frank Longo

  • Way Beyond Black Belt Sudoku® — Frank Longo

    Way Beyond Black Belt Sudoku® — Frank Longo

  • Beyond Black Belt Sudoku If You Have to Ask, It’s Too Hard for You — Frank Longo

    Beyond Black Belt Sudoku If You Have to Ask, It’s Too Hard for You — Frank Longo

  • Blockbuster Book of Sudoku — Frank Longo

    Blockbuster Book of Sudoku — Frank Longo

  • Absolutely Nasty® Sudoku Level 4 — Frank Longo

    Absolutely Nasty® Sudoku Level 4 — Frank Longo

  • Absolutely Nasty® Sudoku Level 3 — Frank Longo

    Absolutely Nasty® Sudoku Level 3 — Frank Longo

  • The Nastiest Sudoku Book Ever — Frank Longo

    The Nastiest Sudoku Book Ever — Frank Longo