Do you have the file (part 1) in the same folder?
Once I know, I can tell you exactly which tool to use or how to fix the extraction.
If you only have RUS-6.7z.002 (the middle piece), you cannot read the map. It looks like nonsense. You must have all parts ( .001 , .002 , .003 ) in the same folder. When you use a program like 7-Zip to "Extract" the .001 file, it automatically grabs .002 to rebuild the original map. RUS-6.7z.002
Ivan uses a tool to cut the map into three precise pieces. RUS-6.7z.001 (The top) RUS-6.7z.002 (The middle) RUS-6.7z.003 (The bottom)
Imagine a spy, Agent Ivan, who needs to deliver a massive, top-secret map of a new, sprawling, 6-kilometer-long urban development (RUS-6). Do you have the file (part 1) in the same folder
The map is too large to fit in any single envelope. If he tries to jam the whole thing in, it will tear (file corruption).
Are you getting a when trying to extract it? It looks like nonsense
He puts them in three separate envelopes and mails them on different days.