Suduro

Welcome to suduro.com, the home of Suduro, a fun, elegant new variation on Sudoku, with the challenges of Sudoku and Kakuro puzzles combined. If you already know and enjoy Sudoku, these offer a challenging new dimension to your puzzling. Fill in the gray squares with numbers 1-9 so that the gray squares in each column and row add up to the sums clues in the top-edge and left-edge black squares.

Similarly, the upper-left 3-by-3 grid of numbers shows the gray-squares sums for the corresponding

3-by-3 sub-grids. Fill in the white squares to complete a normal Sudoku puzzle, so every row, column, and 3-by-3 sub-grid has each number 1-9 exactly once.



Archive for May 15th, 2021

Suduro for May 15, 2021: Hard

Saturday, May 15th, 2021

Click for printable version Puzzle 6874

16

7

10

29

19

24

8

12

6

23

20

10

11

18

9

12

16

12

8

10

15

27

21

24

13

9

4

· Are you stumped? Here’s a more detailed Introduction to Suduro with a fuller explanation of the rules and solution strategies.

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· Still stumped? Here’s the Stage-1 answer (filling in just the gray squares).

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· Still stumped? Here’s the Complete answer.

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To see a special hidden hint/comment about this puzzle, highlight starting here: Subtle logic in the white squares eliminates the wrong solution in the gray squares.

Want more? Here are some archived puzzles: Easy, Moderate, Challenging, Hard, Brutal, Yesterday’s Puzzle

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Want to email or blog a link to this specific puzzle? Here is the permalink.

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Publishers, book agents, newspaper editors, Dan Tow, the inventor of Suduro, has a book of Suduro puzzles ready for immediate publication. Here’s his email address, and the website for his day job.

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By Dan Tow, Copyright 2021, All Rights Reserved