Easy Sudoku

Logic Level 3

Above shows a standard sudoku puzzle. Find the sum of all the numbers in the middle boxes of all 3 x 3 boxes marked in bold.

Part 2

The answer is 47.

3 solutions

Chew-Seong Cheong
Jul 8, 2015

The solution of the Sudoku is as follows.

The required answer is $7+2+8+6+9+1+5+3+6 = \boxed{47}$

Moderator note:

Judging from the number of entries given is 35, can you rate the difficulty of this problem?

Bonus question : If you're further given that the solution is unique. Can you solve this problem without solving the entire puzzle? What is the minimum number of entries you need to know to find the 9 entries in question?

Which software do you use to add and highlight the numbers?

Can you also tell me how to link my problems to each other as I have already posted part 2 of this question which is even more easier

Vraj Mistry - 5 years, 11 months ago

I use Excel spreadsheet. You can use LaTex then key in $[Title](Link)$ , with no space between the two sets of brackets to enter a link.

Chew-Seong Cheong - 5 years, 11 months ago

Thank you so much for your information

Vraj Mistry - 5 years, 11 months ago

No idea on how to rate the difficulty and solve the bonus problem.

Chew-Seong Cheong - 5 years, 11 months ago

Vishnu Bhagyanath
Aug 10, 2015

I like mspaint, it's cute.

Hitesh Bansal
Jul 5, 2015

First have to solve suduku then the middle number will come of all the 3X3 squares. 7,2,8,6,9,1,5,3,6. The sum of all the middle numbers will be 47

Moderator note:

Can you show your working? Except the middle number and the top right number, all the numbers in questions are not entirely obvious.

My first guess was 45

Michael Vilabrera - 5 years, 11 months ago

Did in the same way and got it right

Sai Ram - 5 years, 11 months ago

I did it on paper and forgot to upload the picture.

Hitesh Bansal - 5 years, 8 months ago

Easy Sudoku

The answer is 47.

3 solutions

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