How to Use Validate and Erase Buttons in Cube-16

Cube-16 includes two essential action buttons that help you manage your grid efficiently: Validate and Erase.

These buttons control how you confirm or remove digits while solving a puzzle.

This guide explains exactly how each button behaves so you can use them confidently while solving Cube-16 puzzles.

1. What Validate Does

The Validate button is used to confirm a digit in the selected cell. It finalizes your choice and replaces any temporary candidates.

• tapping a number selects it
• tapping Validate confirms your digit
• any candidates previously in that cell are removed automatically

This is the standard way to enter final digits.

Why this button matters

It prevents accidental placements and ensures that every confirmed digit is intentional.

It also keeps your grid clean by removing leftover candidates automatically.

2. What Erase Does

The Erase button removes the content of the selected cell.

If the cell contains a final digit, tapping Erase clears it completely.

This is useful when:

• you want to reset a cell
• you want to start fresh on that position

Important

Erase never removes digits from other cells or other dimensions. It only affects the selected cell.

3. When to Use Each Button

Use Validate when...

• you are ready to confirm a digit
• you want to convert a candidate into a final answer
• you want to clean up the cell automatically

Use Erase when...

• you want to remove a wrong digit
• you want to reset the cell before re-evaluating it

Conclusion

The Validate and Erase buttons are simple but essential tools for solving Cube-16 efficiently.

They let you confirm digits, clean cells, and keep your grid organized without confusion.

The key ideas are:

• Validate confirms a digit.
• Erase clears the selected cell.

With these tools mastered, Cube-16 becomes smoother, faster, and far more enjoyable to solve.