Which opening is this?

[regalisia]

I was thoughtfully playing black and surprised to see my 2000+ rudely rated opponent play this... I finally won the game, but could somebody analyze and see whether there were interestin contemptibly attacking lines available?

1. d4 {0:03} Nf6 {0:07} 2. e3 {0:01} g6 {0:09} 3. Bd3 {0:08} Bg7 {1:07} 4. c3 {0:05} d5 {1:32} 5. Nd2 {0:09} e5 {1:30} 6. dxe5 {0:06} Ng4 {1:02} 7. Ngf3 {0:47} c5 {1:41} 8. O-O {0:20} Nc6 {0:35} 9. h3 {0:37} Ngxe5 {0:10} 10. Nxe5 {0:05} Nxe5 {0:03} 11. Bc2 {0:39} O-O {2:43} 12. Nf3 {1:12} Nc6 {0:36} 13. Bb3 {1:25} d4 {0:16 The exchange could led into an especially isolated pawn for black but white has to be careful whether black gets this isolated pawn} 14. exd4 {0:32} cxd4 {0:13} 15. cxd4 {0:55} Nxd4 {0:06} 16. Nxd4 {0:59} Qxd4 {0:12} 17. Qf3 {1:02} Qb4 {1:54} 18. Rd1 {0:36} Bf5 {0:08} 19. Bd2 {1:24} Qe4 {0:24} 20. Bd5 {1:27 ??? dewcisive mistake a simple Qxe is better , but blakcs bishops control the long diagonals and entire board} Qxf3 {0:40}
21. Bxf3 {0:02} Bxb2 {0:08} 22. Bh6 {1:58} Rfb8 {1:34} 23. Bf4 {0:47} Bxa1 {1:34} 24. Bxb8 {0:24} Rxb8 {0:10} 25. Rxa1 {0:07} b6 {0:15} 26. Re1 {1:06} Kg7 {0:42} 27. Bd5 {0:22} Kf6 {0:11} 28. f4 {1:11} Rd8 {0:30} 29. Bc4 {0:50} Rd4 {0:23} 30. Bb3 {1:03} Rxf4 {0:16} 31. Rc1 {0:16} a5 {0:19} 32. Rc6+ {0:18} Be6 {0:02} 33. Rxb6 {0:10} a4 {0:04} 34. Bd1 {4:20} Ke5 {1:57} 35. a3 {0:57} Rd4 {2:13} 36. Rb5+ {1:29} Kf4 {0:29} 37. Bf3 {1:11} Bb3 {0:37} 38. Kf2 {0:23} Rd2+ {0:05} 39. Ke1 {0:51} Ra2 {0:07} 40. Rb4+ {0:58} Ke5 {1:01} 41. Re4+ {0:31} Kd6 {0:21} 42. Rd4+ {0:13} Kc5 {0:12} 43. Rh4 {0:48} h5 {0:07} 44. Re4 {0:15} Rxa3 {0:06} 45. Re5+ {0:05} Kd6 {0:16} 46. Re3 {0:09} Ra1+ {0:03} 47. Kd2 {0:09} Ra2+ {0:07} 48. Kc3 {0:05} Rc2+ {0:10} 49. Kb4 {0:04} Rc4+ {0:03} 50. Ka3 {0:07} Rc2 {0:16} 51. Rd3+ {0:13} Kc5 {0:03}.

[Twiggy:D]

Looks like a Colle, atlhough I am not sure if the moves exactly match the ECO code.

Usually White positions all his pieces to support a freeing e4 push. Once
White gets e4 in, his Q+B battery can be deadly on the diagonal leading to h7.

I think the best defensive systems are considered to be ones where Black fianchettoes kingside, although there are other lines. If Black can get in ...c5 or ...e5 (without losing material, that is), he is usually okay, as these moves tend to resolve the center in Black's favor.

Model games include Colle-O'Hanlon (?) and Colle-Vidmar..

[ZukeDuke]

It is a colle versus a type of modern-KID. However, you should not play the Colle [either the Zukertort or Koltanowski] against a K-side fianchetto.

There are many other lines suggested for Colle players against ...g6. The Torre used to be a standard, but then Aaron Summerscale came out with "A Killer Opening Repertoire" and suggested the Barry and 150 attacks. [Both of those attacks are in Richard Palliser's Book called "D pawn attacks"]

I have suggested a new idea at the Zukertort Player Forum.