This one goes up to 11!
(Published on 6. March 2023, 19:14 by BenTen)
This puzzle will test your 11-times table! The hint below will help you. As always, please leave a comment. I do enjoy reading the feedback.
Rules:
- Normal sudoku rules apply.
- In cages, digits must sum to the small clue in the top left corner of the cage. Additionally, the 3-digit or 5-digit number in the cage must be divisible by 11.
- The "11" on the outside of the grid represents the 9-digit number in that row, column, or diagonal must be divisible by 11.
f-puzzles link
CTC app link
Hint: Test for divisibility of 11
If the difference between the sums of alternating digits is divisible by 11 (or zero), then the original number is divisible by 11.
Examples:
- 9583761 is divisible by 11, as (9+8+7+1)-(5+3+6) = 25-14 = 11
- 53174 is divisible by 11, as (5+1+4)-(3+7) = 10-10 = 0
Solution code: Column 1 followed by Row 6.
Solved by SenatorGronk, SKORP17, Bjd, efnenu, bigger, Statistica, lianarox, Lara Croft, StefanSch, Dermerlin, jalebc, cryptique, morgannamodeaura, kangaroo
Comments
Last changed on 26. April 2023, 16:09
on 26. April 2023, 08:46 by Dermerlin
Without that hint for divisibility of 11, i would rate this one with at least 6 stars...
With the hint its a nice puzzle.
And thx for teaching me that rule of divisibility...
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It's a cool trick, isn't it? And amazing that it works!
I'm glad you enjoyed the puzzle.
