Solve puzzles with a 9x9 grid and 3x3 sub grids. Enter numbers 1 through 9 in each cell. Complete puzzles using logic without guessing. Access unlimited puzzles. Track progress across multiple difficulty levels.
Play six including , Diagonal, Irregular, and OddEven formats. Solve Mega puzzles on iPad. Adjust difficulty levels. Track progress and statistics. Share completed puzzles.
Solve by filling a 9x9 grid with numbers 1-9. Ensure each row, column, and 3x3 box contains unique numbers. Features include puzzle selection, difficulty levels, and hints. Track progress and complete logically without guessing.
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.
Solve logic puzzles by placing queens on a grid so none touch each other. Deduce positions based on region divisions. Complete levels with one correct solution through reasoning. Track progress and revisit previous puzzles.
Solve placement with 2 rules: each row, column, and region has exactly 2 stars; no stars can touch, including diagonally. Track progress and access from KrazyDad, featured in the New York Times.
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.
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.
Solve logic puzzles by coloring tiles red or blue. Follow rules to avoid three same-colored tiles in a row or column. Ensure each row and column has equal red and blue tiles. Complete grids of sizes 4x4, 6x6, 8x8, and 10x10.
The app presents a logic puzzle for touch screens. Users draw rails to create a working monorail system, connecting all stations to form a single loop.
Allows users to fill 9×9 grids with numbers 1-9. Tap cells to input numbers. Take notes and use hints. Access unique levels. Track progress and train brain skills.
Solve puzzles with additional numbers outside the grid indicating the sum of cells between 1 and 9 in each row and column. Complete puzzles with varying difficulty levels. Track progress and view hints when needed.
Solve puzzles by placing on a grid based on surrounding numbers. Complete -based challenges with increasing difficulty. Track progress and unlock new puzzles. Share solutions and compete with other players.
Solve puzzles with adjustable difficulty levels. Input numbers, highlight clues, and track progress. Access hints and restart puzzles. Share completed grids via social media. Sync progress across devices.
Play with three different challenges. Solve Sudoku by filling cells without repeating numbers. Connect dots in Water Flows to create full pipe paths. Move blocks in Move Blocks to reach the exit with movement restrictions.
Play by filling a 9×9 grid with numbers 1-9 without repeating in rows, columns, or 3×3 sub-grids. Solve puzzles with varying difficulty levels. Track progress and reset puzzles as needed.