The Logic Wiz Sudoku free app was chosen as the Best Sudoku App and the Best Brain Training App. The Logic-Wiz Sudoku game comes in a Classic Sudoku format as well as 25 Sudoku variants. Each variant is entertaining and challenging. The Variants are divided into 8 Zones. Each zone has core Variants, some of which appear in all the boards( puzzles) of the Zone. Five levels of difficulty: Beginner, Easy, Medium, Hard, and Expert. Logic-Wiz frequently adds new Boards, Variants and Zones. If you are looking for a free fun logic game and/or brain training game this is the place for you. Sudoku Variants: * Classic Sudoku * Killer Sudoku * Sandwich Sudoku * Thermo Sudoku * Diagonal Sudoku * Arrow Sudoku * Consecutive Sudoku * Non-consecutive Sudoku * Palindrome Sudoku * Kropki Sudoku * German Whisper Sudoku * Chess Knight Sudoku * Chess King Sudoku * Bishop Sudoku * Greater-than Sudoku * XV Sudoku * Reflection Sudoku * Quadruple Sudoku * Slingshot Sudoku * Slow Thermo Sudoku * Even Odd Sudoku * Between Lines Sudoku * Lockout lines Sudoku Puzzle Features: * Thousands of beautifully handcrafted boards. * New variants and boards are added occasionally. * Multiple variants on a single board. * Multiple difficulty levels from beginner to expert. * Unique solution to each puzzle. * All boards designed and created by Logic-Wiz. Game Features: * Smart Hints to help and teach. * Gallery game view. * Play multiple quests & games concurrently. * Cloud Sync - Synchronize your progress over multiple devices. * Keep Screen Awake. * Light and Dark Theme. * Sticky digit mode. * Filter by your favorite variants. * Remaining cells of a digit. * Select multiple cells at once. * Select multiple cells at distributed locations of the board. * Multiple pencil marks styles. * Double notation. * Auto remove pencil marks. * Highlight matching digits and pencil marks. * Multiple error modes. * Performance tracking for each puzzle. * Statistics and Accomplishments. * Unlimited Undo/Redo. * Various cell marking options- highlights and symbols * Combinations Panel for Killer and Sandwich boards. * Track and improve solving time. * Board preview. * Eight playing zones. * Easy resumption of unfinished boards. * Mobile Phones and Tablets.