I'm trying to see what strategy I'm using, too. :)
No need to give the W's now.

NTUU-GGGK-WYY2-4789

Well, now that we know exactly which characters (and which not) are in the code... there's a boring (but effective) brute-force approach:

2555-5555-5555-5555
5255-5555-5555-5555

etc...

Edit: Actually, you can probably try to get two or three characters at once without too much interference between them, to speed things up a bit....

Fun! ;)

2R

There would be way faster smart methods ;)

I think I mentioned that I am terrible at mastermind (lack of experience with the game really). :)

GGGK-NTUU-4789-WYY2

EDIT:
OK: Just to have a few guesses in case you come online while I'm away:
GGGG-XXXX-XXXX-XXXX
XXXX-GGGG-XXXX-XXXX
XXXX-XXXX-GGGG-XXXX
XXXX-XXXX-XXXX-GGGG

YYUU-XXXX-XXXX-XXXX
UUYY-XXXX-XXXX-XXXX
XXXX-YYUU-XXXX-XXXX
XXXX-UUYY-XXXX-XXXX
XXXX-XXXX-YYUU-XXXX
XXXX-XXXX-UUYY-XXXX
XXXX-XXXX-XXXX-YYUU
XXXX-XXXX-XXXX-UUYY

2*R

GGGG-XXXX-XXXX-XXXX 1*R
XXXX-GGGG-XXXX-XXXX -----
XXXX-XXXX-GGGG-XXXX -----
XXXX-XXXX-XXXX-GGGG 2*R

YYUU-XXXX-XXXX-XXXX 1*R
UUYY-XXXX-XXXX-XXXX ----
XXXX-YYUU-XXXX-XXXX 1*R
XXXX-UUYY-XXXX-XXXX 1*R
XXXX-XXXX-YYUU-XXXX ----
XXXX-XXXX-UUYY-XXXX 1*R
XXXX-XXXX-XXXX-YYUU ---
XXXX-XXXX-XXXX-UUYY ---

Another wall in case we don't catch each other online:

GUUU-XXXX-XXXX-XXXX
UGUU-XXXX-XXXX-XXXX
UUGU-XXXX-XXXX-XXXX
UUUG-XXXX-XXXX-XXXX

XXXX-XXXX-XXXX-GXXX
XXXX-XXXX-XXXX-XGXX
XXXX-XXXX-XXXX-XXGX
XXXX-XXXX-XXXX-XXXG

KKKK-KKKK-XXXX-XXXX
NNNN-NNNN-XXXX-XXXX
TTTT-TTTT-XXXX-XXXX
WWWW-WWWW-XXXX-XXXX
2222-2222-XXXX-XXXX
4444-4444-XXXX-XXXX
7777-7777-XXXX-XXXX
8888-8888-XXXX-XXXX
9999-9999-XXXX-XXXX

;)

Another wall. (I wouldn't have to ask quite as many doing one-by-one, but having multiple speeds up the process.) For anyone watching, we have at least 4 definite...

XXXX-YYYY-XXXX-XXXX
XXXX-KKKK-XXXX-XXXX
XXXX-TTTT-XXXX-XXXX
XXXX-WWWW-XXXX-XXXX
XXXX-2222-XXXX-XXXX

XXXX-XXXX-NNNN-XXXX
XXXX-XXXX-4444-XXXX
XXXX-XXXX-7777-XXXX
XXXX-XXXX-8888-XXXX
XXXX-XXXX-9999-XXXX

Anyone else watching this?

Interesting strategy ;)

Yip. But think this is going to take ages at this speed :D (But it's the Rules :D)

According to my notes, just 9 characters left to guess. And we know which characters are in every section of the code. The less defined one is the second one, you should focus on that one next, Adam.

Edit: On the other hand... see the picture attached. ;-)

Ha! I thought we were getting close enough for someone to brute force it. :)
Congratulations!

I did forewarn Fujek that I was terrible at mastermind due to lack of experience with the game. I threw out a lot of wild guesses, but I think I started to improve a bit as the game progressed (I read a few pages on strategies and methods to the game).

EDIT:
It has come to my attention that YogSo did NOT redeem the code, so the game is still on!

At the end you made a guess that didn't bring any new info:

But apart from that they were very useful, really. And combined with the three full-code wild guesses you made, it was pretty nailed already.

Oh, and the game is still waiting for someone to grab it. Don't let it be forever outcast, people... ;-)

Thanks for pointing out that guess, I'm sure I just put it there for completeness or something. You're right that it didn't give us anything new at all.

I posted a few more guesses above, also.
Are you taunting me??!

:D

I posted some more guesses above, but here they are again:

KXXX-XXXX-XXXX-XXXX
XXXX-YXXX-XXXX-XXXX
XXXX-XXTX-XXXX-XXXX
XXXX-XXXX-8XXX-XXXX