Newspaper RUDÝ ÚDERNÍK (21. january 1985)

We found a local newspaper RUDÝ ÚDERNÍK dated for 21. january of 1985.
And oh, some strange code table was placed there.

Is there someone who can find the right code in a tangle of letters and numbers?

Hint:
Treasures of Stozec: Advenio - 3rd secret code
Treasures of Stozec: Advenio - 2nd secret code
Treasures of Stozec: Celo - 3rd secret code

Full resolution can be found HERE

Assemble all three parts of secret code taken from Treasures of Stozec SP missions and then use proposed substitute table.

Example:

If the first character of secret code is J, then look in horizontal and vertical direction for this character.

Once both direction will cross, make a note for indicated character - in this case R.

Then continue with the rest of the code until it will looks like XXXXX-XXXXX-XXXXX.

Once the code will be fully decrypted, you can use it as a Redeem code on Steam - 5€

And yes, the redeem code is unique - the FIRST TAKES IT ALL!