17 December 2014

Sea Breeze

Title: Sea Breeze
Rating: 3/5 

It's starting to feel like winter, but perhaps this drink (a combination of vodka, cranberry juice, and grapefruit juice on the rocks) will bring back memories of warmer days.

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.

10 December 2014

Rotation

Title: Rotation
Rating: 2/5

While all of these puzzles have rotational symmetry, this week's product puzzles strives to highlight that symmetry as clearly as possible.

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. 

03 December 2014

Drip

Title: Drip
Rating: 3/5


A medium difficulty puzzle for a medium kind of December day.

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.

25 November 2014

Amends


Title: Amends
Rating: 1/5


If the first of these was challenging, this second of the four "pentoku" puzzles I created should engender some good will.  It's one of the easiest puzzles I've created.


The official rules:
  • The digits 1, 2, 3, 4, and 5 appear in the above puzzle.
  • Each shaded region contains exactly one of each of the digits 1 through 5.
  • No row or column can contain more than two appearances of any of the digits 1, 2, 3, 4, 5.
  • Squares with multiple colors contain a number that’s used in both of the associated adjacent regions.

19 November 2014

Tom Collins

Title: Tom Collins
Rating: 3/5 

A classic drink headlines this week's mix puzzle.  Typical ingredients are gin, lemon juice, and sugar syrup, with a maraschino cherry as garnish.

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.

12 November 2014

Central Office

Title: Central Office
Rating: 2/5

This week's product puzzle was modeled to more clearly exhibit the symmetry of construction.  Each of these puzzles has not just 180 degree symmetry, but a 90 degree symmetry, with colors consistently shifting as the puzzle rotates.

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. 

05 November 2014

UFO

Title: UFO
Rating: 3/5



Don't be tempted to look at the sky.  Keep your eyes on the puzzle.

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.