App Introduction
SumGrid is a beautifully designed app featuring the classic Magic Square
puzzle. A magic square is an ancient mathematical puzzle where numbers
are arranged so that all rows, columns, and diagonals sum to the same
value. Challenge yourself with 3x3, 4x4, and 5x5 puzzles across three
difficulty levels to train your brain and enhance your logical thinking
skills.
Frequently Asked Questions (FAQ)
What is a Magic Square?
A magic square is a grid of numbers arranged so that every row, column,
and diagonal adds up to the same sum. For example, in a 3x3 magic
square, all lines sum to 15. This mathematical puzzle has thousands of
years of history and helps develop logical thinking and mathematical
intuition.
How do I play the game?
1. On the start screen, select your desired grid size (3x3, 4x4, or 5x5)
and difficulty level (Easy, Medium, or Hard).
2. Fill in the empty cells with numbers so that all rows, columns, and
diagonals have the same sum.
3. Use the number pad to input numbers by first tapping on an empty cell
and then selecting a number.
4. Initially filled cells cannot be modified, but you can change your
own inputs by tapping them again.
5. The game is complete when all cells are correctly filled according to
the magic square rules.
How do I use hints?
Tap the "Hint" button at the bottom of the game screen to reveal the
correct number for one of the empty cells. Note that each hint adds a
10-second penalty to your game time. Use hints wisely when you're stuck
on a particularly challenging puzzle.
Why are some numbers displayed in red?
Numbers appear in red when they are duplicated within the grid.
According to magic square rules, each number should appear only once in
the grid. Try replacing the duplicated numbers with different values.
Is my game progress saved?
Yes, the game automatically saves your current progress. If you close
the app and reopen it later, you can continue from where you left off.
However, if you tap the "Reset" button or return to the main screen via
the "Home" button, your current game progress will be lost.
How do I switch between portrait and landscape modes?
SumGrid automatically detects your device orientation and supports both
portrait and landscape modes. Simply rotate your device, and the screen
layout will automatically optimize for the current orientation.