Treasure Map

Title: Treasure Map

Rating: 3/5

In case you're wondering, the colors here were chosen for their significance: brown for dirt, green for grass, blue for the sea, red for blood, and gold for ... well, treasure.

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.