Solve puzzles with varying grid sizes and difficulty levels. Input numbers to fill grids without repeating in rows or columns. Use arithmetic operations to complete puzzle sections. Track progress and restart puzzles.
Play and KenKen puzzles in five difficulty levels. Choose between classic and KenKen modes. Access daily challenges to progress from novice to expert. Solve puzzles with varying complexity to enhance logical thinking.
Offers multiple puzzle variations. Users can solve with standard rules, jigsaw regions, even-odd constraints, hyper mode with extra squares, and X mode with diagonal requirements.
Play with pencil and interface. Use Apple Pencil for writing and erasing. Auto-fill notes on demand. Solve puzzles with interactive solver mode. Add pencil marks and highlights. Check for errors with one click.
Play by filling a 9x9 grid with numbers 1-9 without repetition in rows, columns, or 3x3 blocks. Choose from multiple difficulty levels. Track progress and solve puzzles to improve logic and concentration.
Play puzzles in a 9x9 grid with adjustable difficulty. Challenge friends or players online in competitive duels. Receive adaptive hints and notes during gameplay. Save progress and play offline without an internet connection.
Play Sudoku by filling a 9x9 grid with numbers 1-9. Choose difficulty levels for puzzles. Complete rows, columns, and 3x3 boxes without repeating numbers. Track progress and solve challenges to improve brain skills.
Solve puzzles with varying difficulty levels. Input numbers, check for errors, and complete grids. Track progress and access new puzzles daily. Share scores with friends.
Combines sudoku with puzzle elements. Users place blocks into a 9x9 grid to complete vertical or horizontal lines of any color. Blocks with an "X" are fixed and cannot be removed. Complete all level goals to progress.
Solve logic puzzles combining and Kakuro rules. Fill 9x9 grids with numbers 1-9 following rules and sum constraints. Use add/subtract calculations to determine cell values. Track progress and complete puzzles of varying difficulty.
Solve puzzles with varying difficulty levels. Input numbers manually or transfer from newspapers. Use pencil and paper style tools for notes and hints. Track possible numbers with a ball of string. Access expert-level hints like Swordfish.
Game allows users to place numbers via drag and drop. Start new games with two-finger drag. Check completion with one-finger drag. Upload scores to Game Center. Track achievements for speed and total completions.