Adalogical Ænigmas

Welcome, gentle solver!
Each month, I provide solvers around the world with a fresh challenge to their powers of logical deduction in my series of Adalogical Ænigmas. In addition to its value as intellectual stimulation, however, each ænigma also serves as a contest! If you solve an ænigma during the month of its publication, you could win a free physical puzzle from among the wares offered by Pavel's Puzzles!
What follows is a catalogue of all of the ænigmas yet made available to the solving public. Each puzzle image links to one or more pages of content concerning that ænigma, including a copy of the ænigma itself and, on occasion, a trove of useful pedagogical materials for those encountering difficulties in solving it.
I have penned a series of general advice for the solution of my ænigmas. I pray you will consult it if you are a newcomer to this sort of logical conundrum.
With sincere hopes for your imminent befuddlement (and eventual enlightenment),

Ada has published a book!

Yes, that's right: Ada has created a book collecting the first twenty-four of her ænigmas, along with author commentaries, full solutions, explanations of all of the Easter eggs, and a host of other fun features!

Wish there were more Ænigmas? Now there are!

We are proud to present our new series, the Ænigmatic Addenda! We are commissioning guest constructors to revisit some of the puzzle types that Ada has previously introduced. You can read all about it here!

Want to hear about each new Ænigma as it comes out?

Join our mailing list! (We only use this list for Ænigma announcements.)

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#46: August, 2017
#45: July, 2017
#44: June, 2017
#43: May, 2017
#42: April, 2017
#41: March, 2017
#40: February, 2017
#39: January, 2017
#38: December, 2016
#37: November, 2016
#36: October, 2016
#35: September, 2016
#34: August, 2016
#33: July, 2016
#32: June, 2016
#31: May, 2016
#30: April, 2016
#29: March, 2016
#28: February, 2016
#27: January, 2016
#26: December, 2015
#25: November, 2015
#24: October, 2015
#23: September, 2015
#22: August, 2015
#21: July, 2015
#20: June, 2015
#19: May, 2015
#18: April, 2015
#17: March, 2015
#16: February, 2015
#15: January, 2015
#14: December, 2014
#13: November, 2014
#12: October, 2014
#11: September, 2014
#10: August, 2014
#9: July, 2014
#8: June, 2014
#7: May, 2014
#6: April, 2014
#5: March, 2014
#4: February, 2014
#3: January, 2014
#2: December, 2013
#1: November, 2013