Calculate possible digit combinations that sum to a target. Specify the number of digits and exclude or require specific numbers. View results and adjust parameters for different scenarios.
Solve puzzles by filling 9×9 grids with digits 1-9. Choose from four difficulty levels. Store notes for possible numbers. Use hints to fill missing digits. Complete daily challenges. Clear grids when all numbers are placed.
Collect digits to form the largest number and earn in-game currency. Use earned money to build tower barracks. Deploy soldiers in a battle card game to fight and progress.
Place tiles matching exposed ends of the chain. Draw tiles if no match is available. Score points for multiples of five at exposed ends. Earn additional points for remaining pips in opponent's hand. First to reach a set score wins.
Play Sudoku to challenge your mind with a 9×9 grid. Fill rows, columns, and 3×3 sub-grids with digits 1–9. Choose from easy, medium, hard, or expert levels. Disable numbers after all instances are entered. Use note-taking and hints when needed.
Solve puzzles by filling grids with digits. Enter numbers in rows and columns to match clues. Avoid repeating digits in any row or column. Access a large library of free puzzles. Track progress and restart puzzles.
Solve puzzles by filling a grid with numbers that add up to given clues. Each row and column must contain unique digits. Complete the grid by ensuring all sums match clues and no duplicates exist in any sum.
Calculate fractions with addition, subtraction, multiplication, and division. Convert fractions to decimals. Adjust recipe quantities for different serving sizes. Review math problems and convert measurements between cups and teaspoons.
Play a number linking game by sliding numbers in any of eight directions. Connect two same numbers to start a chain. Next numbers can be the same or double the previous. Score is the sum of all linked numbers. Game is free and suitable for all ages.
Solve picture logic puzzles by filling grid cells based on numerical clues. Reveal hidden images through logical deduction. Customize difficulty levels and track progress across multiple puzzles. Share completed puzzles via social media.