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This line is known as the <"Gurgenidze System"> (Bukhuti Gurgenidze) and can be reach by several different move-orders, probably the most common being <1. e4 g6 2. d4 Bg7 3. Nc3 c6> but playing it through a caro-kann is also valid. Though I would probably prefer using the first one since black keeps himself the most flexible there. Basically this line is like a hybrid between the modern-defence and the caro-kann. Black intends to fianchetto his bishop then strike in the center with d7-d5, also depending a bit on what white does black might transpose into a usual pirc/modern by playing d7-d6 where the move c6 is almost always useful. It's not really such a bad opening for black and there are master-level players which uses it regularly however white is believed to have an advantage in a couple of lines. This system fits the kind of players which likes playing slow closed (slightly cramped) positions where you're playing for a kind of square-control. It's also commonly used by players which likes to avoid theory since: 1. Black's play is very straight forward and in general you can play this way without having to memorize almost anything. This is possible since in the positions arising from this opening is more about understanding key ideas because of the closed nature of the positions usually arising. 2. There's not that much theory on it.
http://schach.chess.com/forum/view/... Google search results on <Gurgenidze system> https://www.google.com/search?q=gur... http://www.365chess.com/eco/B15_Car... Caro-Kann (B15) A nice video by FM Grant Szuveges on the Gurgenidze-setup (from Caro Kann or Robatsch etc):
https://www.youtube.com/watch?v=r07... thanks to parisattack chessforum for mentioning it in his forum <1. e4 g6 2. d4 Bg7 3. Nc3 c6 > 
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Opening Explorer <1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Nf3 d5 5. h3 Nh6 6. Bd3 O-O 7. O-O f6 > 
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Opening Explorer <1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. f4 d5 5. e5 Qb6 > 
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Opening Explorer <1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. f4 d5 5. e5 Qb6 6. Nf3 Bg4 7. Be2 Nh6 > 
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Opening Explorer ♗ ♗ ♗ ♙ ♙ ♙ ♘ ♙ ♙ ♙ - ♗ ♗ ♗ ♙ ♙ ♙ ♘ ♙ ♙ ♙
"Gurgenidze created a system combining the kingside fianchetto with ...c6 and ...d5.
Bukhuti Gurgenidze, a grandmaster from Georgia, developed the idea of combining the Caro-Kann and the Modern.< By playing ...d5, Black gained space in the center and avoided many of the dangers of the typical Modern Defense position. <This was a safer system, with an emphasis on positional play on the light squares, but with somewhat less counterplay for Black.>>" Savon vs B Gurgenidze, 1971 http://www.chess.com/article/view/t... <<1. e4 g6 2. d4 Bg7 3. Nd2 c6> check also: Game Collection: hot rats Add: There are also 3 articles on <the Gurgenidze Setup> by M.Marin in ChessBase Magazines 139, 140, and 141. = = = = = = =
Delayed ♗g7
<1. e4 c6 2. d4 g6 3. Nc3 d5 > 
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Opening Explorer (507 games) <1. e4 c6 2. d4 g6 3. Nf3 d5> (ML is ♗g7 ) 
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Opening Explorer (50 games) A related game
[Event "Washington op"]
[Site "Washington DC"]
[Date "1990.??.??"]
[White "Cooke, Eric"]
[Black "Zlotnikov, Mikhail"]
[Result "0-1"]
[ECO "B06"]
[BlackElo "2315"]
1. e4 g6 2. d4 Bg7 3. f3 d5 4. e5 c5 5. c3 Nc6 6. Be3 cxd4 7. cxd4 f6 8. f4 Nh6 9. Nf3 Bg4 10. Be2 Nf5 11. Bf2 fxe5 12. fxe5 Bxf3 13. Bxf3 e6 14. Bg4 O-O 15. O-O Bh6 16. Nc3 Qe7 17. a3 Ne3 18. Bxe3 Bxe3+ 19. Kh1 Bxd4 20. Re1 Bxe5 21. Rc1 Kh8 22. b4 Rf2 23. b5 Qh4 24. Bh3 Qf4 25. g3 Rxh2+ 0-1
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Kibitzing
