After some delay, here at last is the answer key to Monday’s Mystery:

d a d b c c a a d c

The correct answers were scattered across multiple comments, but by my calculation, Amegilla nets 6 points, Guillaume D gets 3, and Ainsley picks up 1.

Plus, a bonus point to MrILoveTheAnts for making me laugh with the time-honored technique of filling in all “c”‘s, which predictably got him 30%, and another to James Trager, for being so dedicated as to add an extra question in the comments.