Elements

Title: Elements

Rating: 2/5

The first puzzle is one that I'd call a "sum" puzzle.  Here are 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.  
• Several initial clues have been given in larger font.
• Remember: numbers can repeat within a shaded region if that doesn't violate the first rule.