**Instructions:**

Fill numbers into empty fields of the table (into windows of the neighbors in the apartment block) so that the sum of three consecutive numbers in a row and the column was always equal to the selected number. It must be the case that the sum of the values is predetermined.

## Example

**Addition of three adjacent numbers is 10.**

Addition of all numbers is 15.

Addition of all numbers is 15.

4

## Solution

**Addition of three adjacent numbers is 10.**

Addition of all numbers is 15.

Addition of all numbers is 15.

5

4

1

5