Dr. Khalid Alzamili · Puzzle Books
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Dr. Khalid Alzamili · Puzzle Books
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Dr. Khalid Alzamili · Puzzle Books
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Dr. Khalid Alzamili · Puzzle Books
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Brain Fitness · Android
Your puzzles, now on your phone
Discover Brain Fitness: ten games including Sudoku, memory challenges, mental math, and logic puzzles, with daily workouts and progress tracking.
- 10 games in one app.
- Daily workouts and multiple difficulty levels.
- English and Arabic interfaces.
- Offline play with progress syncing when connected.
+1000Published Books
+33Puzzle Types
+185000Books Sold
+15Countries
The Puzzle Library
Explore Puzzle Types
Real historical sales ranking
Top 100 Best Sellers
#1
Mixed / Variety
Hard Logic Puzzles & Brain Games for Adults: 500 Puzzles & 12 Puzzle Types (Sudoku, Fillomino, Battleships, Calcudoku, Binary Puzzle, Slitherlink, Sudoku X, Masyu, Jigsaw Sudoku, Minesweeper, Suguru, and Numbrix)
Classic Sudoku, Sudoku X, Jigsaw Sudoku, Battleships
- Difficulty
- Hard
- Puzzle count
- 500 puzzles
#2
Killer Sudoku
Killer Sudoku Adult Puzzle Book: 500 Easy to Hard : Keep Your Brain Young
Killer Sudoku
- Difficulty
- Easy To Hard
- Puzzle count
- 500 puzzles
#3
Samurai Sudoku
Samurai Sudoku: 500 Medium to Very Hard Sudoku Puzzles Overlapping into 100 Samurai Style
Samurai Sudoku
- Difficulty
- Medium To Very Hard
- Puzzle count
- 500 puzzles
#4
Jigsaw Sudoku
Jigsaw Sudoku Adult Puzzle Book: 1000 Medium Irregular Sudoku Puzzles
Jigsaw Sudoku
- Difficulty
- Medium
- Puzzle count
- 1,000 puzzles
#5
Mixed / Variety
Logic Puzzles & Brain Games for Adults: 500 Easy to Hard Puzzles & 12 Puzzle Types (Sudoku, Fillomino, Battleships, Calcudoku, Binary Puzzle, Slitherlink, Sudoku X, Masyu, Jigsaw Sudoku, Minesweeper, Suguru, and Numbrix)
Classic Sudoku, Sudoku X, Jigsaw Sudoku, Battleships
- Difficulty
- Easy To Hard
- Puzzle count
- 500 puzzles
Comfortable, readable layouts
Large Print Puzzle Books
Calcudoku Puzzle Book for Adults & Seniors: 100 Large Print (9x9) Easy to Hard Mathdoku Puzzles
Calcudoku Puzzle Book for Adults & Seniors: 100 Large Print (9x9) Hard Mathdoku Puzzles
Calcudoku Puzzle Book for Adults & Seniors: 100 Large Print (9x9) Medium Mathdoku Puzzles
Author & Puzzle Publisher
Dr. Khalid Alzamili
Dr. Khalid Alzamili is an engineer, educator, researcher, and puzzle-book author whose work brings together mathematics, logic, problem solving, and publishing.
About Dr. Khalid AlzamiliFree Puzzle Resources