Solve math puzzles by adjusting lit numbers to match row and column totals. Customize difficulty levels. Track progress and compete with others. Share achievements on social media.
Place next to in a grid based on numerical clues. Solve using logic to ensure no touch. Access thousands of levels with dark mode themes. Get unlimited free hints and play at your own pace.
Play with five overlapping 9x9 grids. Solve puzzles following standard rules. Choose from five difficulty levels and various types like Gattai and Butterfly. Use the Hint feature to auto-fill the board with non-conflicting numbers.
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.
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.
Play a puzzle game with drag-and-drop mechanics on an 8x8 grid. Clear rows or columns to eliminate blocks. Choose from multiple free themes. No internet required. All content is free with unlimited upgrades.
Solve -based crosswords by dragging number tiles into grids. Complete equations with balanced rows and columns. Track progress and unlock new puzzles. Share scores with friends.
Play logic puzzles by filling 10x10 grids with 0s and 1s. Ensure each row and column has equal numbers of 0s and 1s. Avoid three identical numbers in a row. Earn points by solving grids efficiently. Use time-based multipliers for higher scores.
Solve puzzles with 9x9 grids divided into 3x3 blocks. Enter numbers 1-9 in empty squares. Check for valid moves and complete puzzles to qualify for Amazon.com Gift Card sweepstakes. View results and copy gift codes if won.
Solve puzzles with unlimited generated grids. Choose from six difficulty levels. Features a vintage 1920s design. Offers a clean interface for focused play. Provides mental exercise and entertainment. Available offline for anytime use.
Play with over 10,000 puzzles across 600+ levels. Choose from 11 variations of the classic game. Track progress through a to unite a kingdom and defeat an evil sorcerer. Solve puzzles to advance through islands.
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 by filling a grid with zeros and ones. Ensure each row and column has equal numbers of each. Avoid three identical numbers in a row or column. Complete puzzles with pre-filled starting cells.