So far, i think this event is actually a gem people havent realized yet

A board tells you if there is a reward on it, which is very helpful, and before you can collect a clue if there is a reward it lets you know.

Dont go for collecting stones atm, just pick the pieces that unlock the most tiles.

You can earn 1000 gem rewards, 500, 100, and 150 on the board

I just got roughly 1800 gems off one board, on a different one i got about 12 energy from different energy capsules

Ive seen multiple boards with rockets which get the rows and columns and the bombs which collect a good bit of gems surrounding them and unlocks them.

I think given the time frame this thing has we can milk this thing for a good chunk despite early complaints

Ive put about 50 energy pieces in so far and already have 18 clues and over 100 of each gem type.

Another benefit- the stages to earn 10 energy are way easier to beat then last events- definitely more friendly to lower level people