Fill in the diagram using the clues below. Each space contains a single digit. The answer to each Outward clue is a two-digit number to be entered outward from the center. The answer to each clockwise clue is a three-digit number to be entered in a clockwise direction. There are no zeroes in the puzzle. Those numbers that can be determined by other clues are not mentioned. Note: a perfect square is the product of a number multiplied by itself.

OUTWARD

1-9 A perfect square, reversed

2-10 Each digit is a prime number

3-11 Consecutive digits in some order

4-12 One digit is the square of the other digit

5-13 Each digit is a different multiple of 4

6-14 One digit is three times the other digit

7-15 Consecutive odd digits in some order

8-16 Consecutive digits in some order

CLOCKWISE

1-3 Consecutive digits in some order

3-5 The first digit is the sum of the other two digits

5-7 Consecutive digits in some order

7-1 Each digit is a different multiple of three

9-11 The last digit is the product of the first two digits

11-13 The first digit is greater than the second digit but less than the third digit

13-15 The second digit is even

15-9 The second digit is the sum of the other two digits