Puzzle of the week #304

Level: 
5-Queen
Chess Diagram: 

[Event "Puzzle #304"][Date "2016.12.04"][Result "0-1"][SetUp "1"][FEN "r1b1kb1r/pp1n1ppp/2p1pn2/q2p2B1/2PP4/2NBPN2/PP3PPP/R2QK2R b KQkq - 3 7"]

We have reached this position after the first 7 moves of the game. Your tasks:
a) Figure out the moves played so far in the right order
b) Name the opening
c) Show the best line for black from this point on
Total available points for this puzzle is 25. The answers will be published next time together with puzzle #305.

Puzzle #303 solution:
Game Mark Orr – Dirk Michael, EU-chT, 1989. The correct answers were:
a) QGD Classical/ Orthodox variation
b) Best attacking line is:

[Event "Puzzle #303"][Date "2016.11.22"][Result "1-0"][SetUp "1"][FEN "r1b2rk1/pp4pp/1n6/2pq2N1/5p2/2Q5/PPB2PPP/2R1R1K1 w - - 0 21"]21. Bb3 c4 22. Re5 Qc6 23. Re7 Qg6 24. Bc4 Be6 25. Re6

Correct solutions:
Coco, Cody - 15 points
Benjamin, Bradley, Deryk - 10 points
Jalen - 6 points
Dheera - 5 points
Uros, Yakov - 2 points

Standings:
Coco - 50 points
Cody - 44 points
Jalen - 37 points
Bradley - 35 points
Benjamin - 29 points
Deryk - 32 points
Yakov - 16 points
Dheera - 11 points
Uros - 8 points

Comment: 

QGD