Gabriel Ferguson – författare

1000 Sudoku Puzzles Medium to Hard difficulty

1000 Sudoku Puzzles Easy, Medium and Hard difficulty Large Print

The Sudoku obsession collection Book 2

1000 Sudoku Puzzles Easy, Medium and Hard difficulty Large Print

The Sudoku obsession collection Book 4

300 Sudoku Very Hard Difficult Challenging Extreme Expert Level Puzzles brain workout large print (The Sudoku Obsession Collection)

50 Easy Sudoku Puzzles (The Sudoku Obsession Collection)

300 Sudoku Very Hard Difficult Challenging Extreme Expert Level Puzzles brain workout large print