I'm more impressed that they actually created those numbers to be seen by satellites

They didn't. Go to the actual coordinates on Maps and they're not there.

It's Photoshop.

Actually look at the videos on the ending page. You can see that they actually did create them. There are people in some of the gifs.

Numbers on top half of board

  White     Black
  +10       -12
  + 8       - 7
  - 6       +15
  -11       - 2
  + 4       +19
            + 1
  --------------
  bottom half 
  +3        - 7
  +3        + 1
  +4        -19 
  +5        
  +7        
  +7        
  +5

You're overthinking it.

The number of spaces in each row matches the lengths of something you've seen.

Answer is posted here: https://news.ycombinator.com/item?id=13476200

ok, so what's the final set of coordinates then? searching that on google maps and putting the center point into savethedate.foo did not work.

They broke our expectations. I put in coordinates too, but it's just "Shoreline Amphitheatre".

Yeah I tried that too! It bucks the trend and just wants you to enter the name.

"you" are black (have been capturing white pieces)...what legal moves could have led to that position?

My guess would be black/white corresponds to lat/long? (or vice versa)

5, 17, 18, 19, numerically

Do the number of pawns correspond to the puzzle number?

do these somehow correspond to chess move notation?

To those looking into FBMD: https://www.hackerfactor.com/blog/index.php?/archives/726-Fa...

Facebook metadata?

http://stackoverflow.com/questions/31120222/iptc-metadata-au...

Yeah, but the EZPass flex option is pretty clearly stated that you have to send it back if you don't use it...