FREE! Click here to Join FunTrivia. Thousands of games, quizzes, and lots more!

Sudoku Trivia Quiz

This quiz is based on the number game that became popular around the world in 2005. All questions are based on the standard 9x9 arrangement. Best of luck.

A multiple-choice quiz by Triviaballer. Estimated time: 23 mins.

Author
Triviaballer

Time
23 mins

Type
Multiple Choice

Quiz #
224,032

Updated
Dec 03 21

# Qns
20

Difficulty
Average

Avg Score
16 / 20

Plays
5772

Awards
Top 20% Quiz

Question 1 of 20

1. Since Sudoku is mostly a solving type of game, I will indulge you in a fun (I hope) puzzle. The 9x9 grid shown here will be used to solve questions 1-20. It may help to write the numbers on a sheet of paper and highlight the 9 3x3 squares. The rules are simple: every row, column, and 3x3 box must contain the numbers 1-9 only once. Use the numbers given to help solve the puzzle. For each question, fill in the numerical answer. It may help to solve the easier questions first rather than trying to go in order. Here's the board:

. A B C D E F G H I
a 8 6 ? ? 4 1 3 7 9
b ? ? 2 9 5 ? 6 8 ?
c 4 9 3 8 ? 6 1 2 ?
d 1 3 4 7 2 9 ? 6 8
e 2 7 ? ? 3 ? 4 9 ?
f 9 5 ? 1 ? 4 2 3 7
g ? ? 7 6 8 ? 9 1 3
h 6 8 1 3 9 5 ? ? 2
i 3 2 ? 4 ? 7 8 5 6

What number goes in square a,C (row 1, column 3)?

Answer: (Number (1-9))

NEXT>

Question 2 of 20

2. What number goes in square a,D (row 1, column 4)?

Answer: (Number (1-9))

NEXT>

Question 3 of 20

3. What number goes in square b,A (row 2, column 1)?

Answer: (Number (1-9))

NEXT>

Question 4 of 20

4. What number goes in square b,B (row 2, column 2)?

Answer: (Number (1-9))

NEXT>

Question 5 of 20

5. What number goes in square b,F (row 2, column 6)?

Answer: (Number (1-9))

NEXT>

Question 6 of 20

6. What number goes in square b,I (row 2, column 9)?

Answer: (Number (1-9))

NEXT>

Question 7 of 20

7. What number goes in square c,E (row 3, column 5)?

Answer: (Number (1-9))

NEXT>

Question 8 of 20

8. What number goes in square c,I (row 3, column 9)?

Answer: (Number (1-9))

NEXT>

Question 9 of 20

9. What number goes in square d,G (row 4, column 7)?

Answer: (Number (1-9))

NEXT>

Question 10 of 20

10. What number goes in square e,C (row 5, column 3)?

Answer: (Number (1-9))

NEXT>

Question 11 of 20

11. What number goes in square e,D (row 5, column 4)?

Answer: (Number (1-9))

NEXT>

Question 12 of 20

12. What number goes in square e,F (row 5, column 6)?

Answer: (Number (1-9))

NEXT>

Question 13 of 20

13. What number goes in square e,I (row 5, column 9)?

Answer: (Number (1-9))

NEXT>

Question 14 of 20

14. What number goes in square f,C (row 6, column 3)?

Answer: (Number (1-9))

NEXT>

Question 15 of 20

15. What number goes in square f,E (row 6, column 5)?

Answer: (Number (1-9))

NEXT>

Question 16 of 20

16. What number goes in square g,A (row 7, column 1)?

Answer: (Number (1-9))

NEXT>

Question 17 of 20

17. What number goes in square g,B (row 7, column 2)?

Answer: (Number (1-9))

NEXT>

Question 18 of 20

18. What number goes in square g,F (row 7, column 6)?

Answer: (Number (1-9))

NEXT>

Question 19 of 20

19. What number goes in square h,G (row 8, column 7)?

Answer: (Number (1-9))

NEXT>

Question 20 of 20

20. What number goes in square h,H (row 8, column 8)?

Answer: (Number (1-9))

(Optional) Create a Free FunTrivia ID to save the points you are about to earn:

Select a User ID:

Choose a Password:

Your Email:

Quiz Answer Key and Fun Facts

1. Since Sudoku is mostly a solving type of game, I will indulge you in a fun (I hope) puzzle. The 9x9 grid shown here will be used to solve questions 1-20. It may help to write the numbers on a sheet of paper and highlight the 9 3x3 squares. The rules are simple: every row, column, and 3x3 box must contain the numbers 1-9 only once. Use the numbers given to help solve the puzzle. For each question, fill in the numerical answer. It may help to solve the easier questions first rather than trying to go in order. Here's the board: . A B C D E F G H I a 8 6 ? ? 4 1 3 7 9 b ? ? 2 9 5 ? 6 8 ? c 4 9 3 8 ? 6 1 2 ? d 1 3 4 7 2 9 ? 6 8 e 2 7 ? ? 3 ? 4 9 ? f 9 5 ? 1 ? 4 2 3 7 g ? ? 7 6 8 ? 9 1 3 h 6 8 1 3 9 5 ? ? 2 i 3 2 ? 4 ? 7 8 5 6 What number goes in square a,C (row 1, column 3)?

Answer: 5

You can solve for the 5 by recognizing that the upper-left box needs a 1, 7, and 5 to complete. Since row "a" already has a 1 (a,F) and a 7 (a,H), a 5 must go in square a,C.

2. What number goes in square a,D (row 1, column 4)?

Answer: 2

The easiest way to solve for this square is to first solve for square a,C (the previous problem) and then recognize that row "a" has 8 squares filled in and thus, the remaining square must be the omitted number 2

3. What number goes in square b,A (row 2, column 1)?

Answer: 7

This square can be solved for by first recognizing that column B and C both have a 7. Therefore, the upper-left box must have a 7 in one of its three left squares. Since square b,A is the only open square, a 7 must go in that square.

4. What number goes in square b,B (row 2, column 2)?

Answer: 1

Similar to problem #6, the easiest way to solve is to recognize that columns A and C already contain a 1 and thus the upper-left box must contain a 1 in one of its middle squares. Square b,B is the only open square, so a 1 must be in that square.

5. What number goes in square b,F (row 2, column 6)?

Answer: 3

Rows "a" and "c" already have a 3 in them, so square b,F must be a 3 as it is the only open middle square in the upper-center box.

6. What number goes in square b,I (row 2, column 9)?

Answer: 4

The top-right square needs a 4 and a 5 to be completed. Since there is already a 4 in row "c", square b,I must be a 4.

7. What number goes in square c,E (row 3, column 5)?

Answer: 7

Row "c" needs a 5 and a 7 to complete. Since the top-center square already contains a 5 (b,E), square c,E must be a 7.

8. What number goes in square c,I (row 3, column 9)?

Answer: 5

The top-right square needs a 4 and a 5 to complete. Since row "b" contains a 5 (b,E), square c,I must be a 5.

9. What number goes in square d,G (row 4, column 7)?

Answer: 5

Row d has only one number omitted and that number should be a 5 in square d,G.

10. What number goes in square e,C (row 5, column 3)?

Answer: 6

If one tries to solve for this square first, it is rather difficult. It is easiest to solve by first solving other squares. One way to solve for this square is to recognize that both the middle-left square and row "f" both need a 6 and an 8 to complete. Since column E contains an 8, square f,E must be a 6 and thus square e,C must also be a 6.

11. What number goes in square e,D (row 5, column 4)?

Answer: 5

Column D needs a 2 and a 5 to complete. Since square e,A is a 2, square e,D must be a 5.

12. What number goes in square e,F (row 5, column 6)?

Answer: 8

Column F needs a 2, 8, and 9 to complete. Since row "e" already contains a 2 and a 9, square e,F must be an 8.

13. What number goes in square e,I (row 5, column 9)?

Answer: 1

The middle-right box needs a 1 and a 5 to complete. Since column G has a 1 in it (c,G), square d,G must be a 5 and square e,I must be a 1.

14. What number goes in square f,C (row 6, column 3)?

Answer: 8

This square is solved in conjunction with square e,C (question 13). One way to solve for this square is to recognize that both the middle-left square and row "f" both need a 6 and an 8 to complete. Since column E contains an 8, square f,E must be a 6 and thus square f,C must be an 8.

15. What number goes in square f,E (row 6, column 5)?

Answer: 6

The middle-center box needs a 5, 6, and 8 to complete. Since columns D and F contain a 6, square f,E must be a 6.

16. What number goes in square g,A (row 7, column 1)?

Answer: 5

Column A needs a 5 and 7 to complete. Since the lower-left box already contains a 7 (g,C), square g,A must be a 5.

17. What number goes in square g,B (row 7, column 2)?

Answer: 4

Column B needs a 1 and 4 to complete. Since the lower-left box already contains a 1 (h,C), square g,B must be a 4.

18. What number goes in square g,F (row 7, column 6)?

Answer: 2

The lower-center square needs a 1 and a 2 to complete. Since column F already contains a 1 (b,F), square g,F must be a 2.

19. What number goes in square h,G (row 8, column 7)?

Answer: 7

The lower-right square needs a 4 and a 7 to complete. Since column G already contains a 4 (e,G), square h,G must be a 7.

20. What number goes in square h,H (row 8, column 8)?

Answer: 4

Column H contains every number from 1-9 except a 4, so square h,H must be a 4. The solution for the squares i,C and i,E are as follows: Row "i" needs a 1 and a 9 to complete. Since the lower-left box already contains a 1 (h,3), square i,C must be a 9. The lower-center box needs a 1 and a 2 to complete. Since row "i" already has a 2 (i,B), square i,E must be a 1. The final board looks like this:

A B C D E F G H I
a 8 6 5 2 4 1 3 7 9
b 7 1 2 9 5 3 6 8 4
c 4 9 3 8 7 6 1 2 5
d 1 3 4 7 2 9 5 6 8
e 2 7 6 5 3 8 4 9 1
f 9 5 8 1 6 4 2 3 7
g 5 4 7 6 8 2 9 1 3
h 6 8 1 3 9 5 7 4 2
i 3 2 9 4 1 7 8 5 6

Source: Author Triviaballer

This quiz was reviewed by FunTrivia editor crisw before going online.
Any errors found in FunTrivia content are routinely corrected through our feedback system.

Related Quizzes

This quiz is part of series Triv's Brain Teasers:

Brain teasers galore

  1. Forward Easier
  2. Sudoku Average
  3. Tribond Style Word Associations Average
  4. From a State to a Country Easier
  5. Words Without Friends Very Easy

Referenced Topics

World Brain Teasers Logic Puzzles Sudoku

Other Destinations

Explore Other Quizzes by Triviaballer

Go to Logic Puzzles Quizzes

More Sudoku Quizzes

FunTrivia Homepage