25 May 2016

Shaken, Not Stirred

Title: Shaken, Not Stirred
Rating: 4/5 

This is the last puzzle I've created.  It's a mix puzzle to finish out the run.  It's been a nice two-plus years, and this set of puzzles concludes posting on my wedding anniversary.  The title, I should probably mention, is just coincidence.   


The official rules:

  • The digits 1 through 9 appear in each row and each column exactly once.
  • Digits in each shaded region must add to the indicated sum (denoted by +) or multiply to the indicated product (denoted by *).   
  • Squares with multiple colors contain a number that’s used in the sum/product for adjacent regions of each of those colors.  
  • Remember: numbers can repeat within a shaded region if that repetition doesn't violate the first rule.

18 May 2016

You Are Getting Sleepy

Title: You Are Getting Sleepy
Rating: 1/5


As the final product puzzle I've created, and after last week's big challenge, this will come as a nice relaxing treat.

The official rules:

  • The digits 1 through 9 appear in each row and each column exactly once.
  • Digits in each shaded region must multiply to the indicated product.   
  • Squares with multiple colors contain a number that’s used in the product for adjacent regions of each of those colors.  
  • Remember: numbers can repeat within a shaded region if that doesn't violate the first rule.  

11 May 2016

Rorschach II

Title: Rorschach II
Rating: 5/5



One of the hardest puzzles I've ever created, and a sequel to the infamous original, and the final sum puzzle I've created.  Note also the overlapping regions for an extra challenge (see the final rule).  Enjoy (?).

The official rules:

  • The digits 1 through 9 appear in each row and each column exactly once.
  • Digits in each shaded region must add to the indicated sum.   
  • Squares with multiple colors contain a number that’s used in the sum for adjacent regions of each of those colors.
  • Remember: numbers can repeat within a shaded region if that doesn't violate the first rule.
  • Cells at the following (row, column) positions belong to the regions that go horizontally and vertically through that cell: (2,3), (2,7),(3,2),(3,8),(7,2),(7,8),(8,3),(8,7). 

04 May 2016

Modernista

Title: Modernista
Rating: 3/5 

The final modular puzzle is named after a drink made from gin, dark rum, lemon juice, absinthe, orange bitters, and a maraschino cherry. 


The official rules:

  • The digits 1 through 9 appear in each row and each column exactly once.
  • Digits in each shaded region must add to the indicated sum (denoted by +) or multiply to the indicated product (denoted by *)--both mod 9.   
  • Squares with multiple colors contain a number that’s used in the sum/product for adjacent regions of each of those colors.  
  • Remember: numbers can repeat within a shaded region if that repetition doesn't violate the first rule.

27 April 2016

Elasticity

Title: Elasticity
Rating: 3/5


After last week's mod 9 sum, this week is a mod 9 product.

The official rules:

  • The digits 1 through 9 appear in each row and each column exactly once.
  • Digits in each shaded region must multiply to the indicated product (mod 9).   
  • Squares with multiple colors contain a number that’s used in the product for adjacent regions of each of those colors.  
  • Remember: numbers can repeat within a shaded region if that doesn't violate the first rule.  

20 April 2016

Modular Lightning

Title: Modular Lightning
Rating: 2/5



In the first of three puzzles of this type, modular arithmetic plays an important rule.  Here, all the sums are given mod 9.

The official rules:

  • The digits 1 through 9 appear in each row and each column exactly once.
  • Digits in each shaded region must add to the indicated sum (mod 9).   
  • Squares with multiple colors contain a number that’s used in the sum for adjacent regions of each of those colors.
  • Remember: numbers can repeat within a shaded region if that doesn't violate the first rule.