Editorial Blue Turtle profile picture

Editorial Blue Turtle

Is this your author profile? Create an account to claim and customize it!

Stand Alone

Sudoku 12×12 Puzzle for Adults – Hard (500 Puzzles): 500 Hard 12×12 Sudoku Puzzles – Advanced Large Grid Brain Training and Logic Challenges (2026)
Sudoku 12×12 Puzzle for Adults – Expert (500 Puzzles): 500 Expert 12×12 Sudoku Puzzles – Extreme Large Grid Logic, Brain Training, and Elite Challenges (2026)
Mixed Puzzle Book for Adults: Sudoku, Crossword, Killer Sudoku, Maze, Word Search, Kakuro, Little Killer Sudoku, Shikaku & Futoshiki | A Brain-Challenging Puzzle Mix-Up for Adults | 2026 Edition
Variations sudoku puzzle book for adults: 300 Samurai, Flower, Sohei, Butterfly, Cross, Triple, Two, Gattai-3 & Hoshi Sudoku Puzzles | Challenging Brain Games for Adults | 2026 Edition
Sudoku Little Killer for Adults – Intermediate Level: 100 Intermediate Little Killer Sudoku Puzzles – Brain Training Logic Games and Number Challenges (2026)
Editorial Blue Turtle — Books & Biography | Menrva Books