Castle Wall

Title: Castle Wall

Rating: 3/5

It could be that I watched one too many Middle Earth movies around the naming of this one, but for whatever reason the shapes reminded me of ramparts.

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.