Odds and Evens
| 3 | 3 | ||||||
| 3 | 8 |
| 4 |
| 4 | ||
| 6 | |||||||
| 7 | 2 | ||||||
| 6 | 3 | ||||||
|
| 4 |
| 1 | ||||
| 4 |
| 3 |
| ||||
|
| 7 |
| 6 |
| 4 | 9 |
Print off and complete this diagram using the numbers 1 to 9 according to the rules given below.
- Even numbers occur only in horizontal or vertical pairs.
- These pairs of even numbers must be quite separate, not touching even at the corners.
- In the vertical columns, adjacent numbers differ by 0, 1 or 2.
- In the horizontal columns, adjacent numbers differ by 3, 4 or 5.
- There are twice as many 1’s as 2’s in the completed diagram.
