Russian climbing classification
1b - describes a longer way up to the peak which can lead over ridges, respective gorges.
2a - like 1b but with some spots to climb and maybe with passages that make rope safeguarding necessary
2b - technically more sophisticated with spots to climb and rope safeguarding
3a - many spots to climb, requires basic climbing- and rope-techniques
3b - is the beginning of technical climbing, you should be able to apply rope safeguarding techniques
4a - requires comprehensive climbing-, safeguarding- and jump-techniques
4b - sophisticated passages to climb on great walls, snowfields or smaller icefields
5a - very sophisticated passages to climb with difficult ridges or towers, vertical walls, respective slight overhangs, partly with icepassages
5b - requires comprehensive knowledge and experiences in all areas
6 - is designated as "International" in Russia and is virtually 5b combinated with extreme heights
