QUAD-WRANGLE
No 03
Can you discover the sixteen numbers that match all the clues below? All the numbers
are whole numbers. No two numbers are the same and no number has a value less than 1.


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1. A1=C3 plus D2.
2. A2=either D1 plus B2 or D1 plus D2.
3. A3=either C2 plus B2 or C2 minus B2.
4. A4=B2 plus D2.
5. B1=either either A2 plus B4 or A2 plus A4.
6. B2=either 9 or 10.
7. B3=either D4 minus A1 or D4 minus A4.
8. B4=either A3 plus D2 or A3 minus C3.
9. C1=either B3 minus B2 or B3 plus B2.
10. C2=either C1 minus A4 or C1 minus B3.
11. C3=either A4 minus B2 or A4 plus B2.
12. C4=either B1 minus B4 or B1 plus A1.
13. D1=either B4 plus A4 or B4 minus A4.
14. D2=a third of B2.
15. D3=either C4 minus B2 or C4 plus B2.
16. D4=either A1 plus C3 or A1 minus C3.