Magic Square
Magic Square gives you a 3x3 or 4x4 grid with a few numbers filled in and a tray of the rest. Drop the tiles in so every line adds up to the same magic sum. Each level is built from a real magic square and checked to have exactly one solution, with number sets that change from level to level.
How to play
- Tap an empty cell, then tap a number tile from the tray.
- Watch the sum chips beside and below the grid, since red means that line cannot work.
- Finish when every row, column and diagonal shows the magic sum.
Tips
- Start with a line that has only one gap, because the missing number is the sum minus the rest.
- The centre cell of a 3x3 is always the middle number of the set.
- Tap a selected filled cell to pick the number back up.
Questions
Is the solution unique?
Yes, a solver proves it for every level.
What counts as a slip?
Placing a number that makes a line impossible, and three slips cost a star.
Do the numbers always start at 1?
No, later levels use sets like 2 to 10 or steps of 2, 3 or 5.
Make 24
Balance Scale
Skyscrapers