Synergy

Title: Synergy

Rating: 2/5

As my fall semester begins, I'm hoping for a little bit of synergy in my activity (despite this).

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.