You need to identify a particular intersection in Mercury Gulch. The two streets will each be 7 letters long and will share the same middle letter.

To get the address of the meet, you will need to spell Azurite in one red box, and Emerald in the other.

Use one set of buttons to move your desired letter to the correct row or column, then the other set of buttons to move it into the red box in the center.

It'll help if you get one of the streets completed before working on the other one. First rule is to never use the middle buttons (the red row and red column).

Once you get the first street completed, getting the 2nd street will seemingly ruin your hard work on the first street. The trick is to repair each out-of-place letter on the 1st street immediately after getting each letter in place for the 2nd street. Usually, the out-of-place letter is still in the correct row or column, and can be put back in place without ruining anything else.

The address is: 102 Emerald Blvd.