It is not NA only, but "not Europe or RU/CIS".

Bump for solved.

Oh, I solved it! TXA stands for Tlaxcala airport and 4OYwyx76 is the flight number, right?

The only thing I haven't been able to solve is the title, but I guess knowing it doesn't help.

This seems to be completely over my head.

Just miss the anniversary event, now I'm gonna to solve this.

I know I can't join the GA but tried it anyway and found the ith. But I don't know what to do then. Seems only nhahtdh figured it out so far. Any hint on how to solve the ith?

I guess I already own the game, and I'm from Europe but solved for "Why not?"

Nice puzzle, thank you!

bmp

Bump for 1 more confirmed solver (but only 1 giveaway entry)

An idea came into my mind while I'm bathing without Archimedes Eureka!

Bump for soved

Bump. Still 100% odds as of today.

Dragon puzzles?

Solution

02191596 stands for 02/19/1596.

Googling the date will typically give you the date of death/Wikipedia page of Blaise de Vigenère (was supposed to be birth date but I fucked up).

Blaise de Vigenère is most commonly known for the cipher named after him - the "Vigenère cipher" - which is mentioned on the Wikipedia page.

The Vigenère cipher's usage is described on the Wikipedia page, among other places. Once you know how it works, you'll know what to do with "LETHE" (the key) and "TXA-4OYwyx76" (the message).

Once solved, the message will read "ITH-4HUlue76" (It's Too Hard link). Now that I think of it, I should have specified what "ITH" even means for those who have never used the website.

• http://www.itstoohard.com/puzzle/4HUlue76

The puzzle contains a PNG image, as well as a series of similar questions only containing two numbers ranging from 351 to 1094. If you think about it real hard, you can assume that these are co-ordinates (in pixels) on the PNG image (yeah, a bit of a bruteforce, I know).

Using an image-editing tool, you can zoom-in close enough to place your pointer on the specific co-ordinates for each question. Each pixel specified via co-ordinates are a "pure" color, for example cyan, red, green, etc.

Once the puzzle is solved, the result gives another ITH link.

• http://www.itstoohard.com/puzzle/pnooPwMq/36m5dAIA

This one is rather simple, but a bit cryptic. You are given a link to a huge collection of ebooks in plain text, and a list of characters and numbers:

Roman number - number number

The solution is found by seeking the specific word of each chapter, of each paragraph.
For example:

The Adventures of Sherlock Holmes
I - 2 31

...Would tell you to look at the 31st word of the second paragraph of the first chapter of The Adventures of Sherlock Holmes.

Once this is done, you'll spell out:
"Who is the author of The Adventures of Sherlock Holmes"

After typing in any (or most) variations of Sir Arthur Conan Doyle, you will receive a link to the giveaway - Congrats, you've solved the puzzle.