Question 6
Fill every cell of this $6\times6$ table with a number from 1 through 9, following all the row and column rules.
- R1: sum 21.
- R2: sum 39.
- R3: six consecutive numbers in order.
- R4: the largest and smallest entries are adjacent.
- R5: exactly two entries are 9.
- R6: sum 21.
- C1: exactly two 9s; the minimum entry is 2.
- C2: six consecutive numbers in order.
- C3: exactly two 3s; sum 21.
- C4: exactly two 8s; no entry is 4.
- C5: exactly two 6s; sum 40.
- C6: no entry is 7.
- R1: sum 21.
- R2: sum 39.
- R3: six consecutive numbers in order.
- R4: the largest and smallest entries are adjacent.
- R5: exactly two entries are 9.
- R6: sum 21.
- C1: exactly two 9s; the minimum entry is 2.
- C2: six consecutive numbers in order.
- C3: exactly two 3s; sum 21.
- C4: exactly two 8s; no entry is 4.
- C5: exactly two 6s; sum 40.
- C6: no entry is 7.