Not sure what the difference is between combos and chains, but I just got 2 achievements for 100 and 200 lifetime chains despite having only 22 in my stats (I've got 226 combos).
Ugh, its a typo in the achievement text. It should have said "combos", which is when you match three or more to the next age group up.
Thanks for letting me know.
Ah cool, I've also noticed the 'five dollar cheque' achievement doesn't fit in the bubble with the date next to it.
In other news, the game is (sadly) much more straight forward when you switch to number mode. Maybe that's just how my brain works.
