Puzzle of the week #303

Level: 
5-Queen
Chess Diagram: 

[Event "Puzzle #303"][Date "2016.11.22"][Result "1-0"]1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. Bg5 Be7 6. e3 Nbd7 7. Bd3 O-O 8. O-O dc4 9. Bc4 Nd5 10. Be7 Qe7 11. Rc1 N5b6 12. Bd3 e5 13. Re1 f5 14. e4 f4 15. Bc2 ed4 16. Qd4 c5 17. Nd5 Qd6 18. Qc3 Nd5 19. ed5 Nb6 20. Ng5 Qd5

After 20 moves we have reached an open position where black has just won a pawn. Your tasks:
a) Name the QGD line chosen by black
b) Analyse the position and decide:
- does white has compensation for the lost pawn?
- the best continuation for white from this point on
Total available points for this puzzle is 25. The answers will be published next time together with puzzle #304.

Puzzle #302 solution:
Game Godart - Le Montagner, 27th Avoine Open (2012). Yakov was the only one to select the correct and more direct first attacking move 21. Rf3 ... Most of the points were awarded for the answer to the first question and analysis of the position. The correct answers were:
a) QGD, Lasker variation
b) Best attacking line is:

[Event "Puzzle #302"][Date "2016.11.07"][Result "1-0"][SetUp "1"][FEN "r1b2rk1/p3q3/1p3p1p/2pp4/3P4/2P1P3/P1Q3PP/1B2RRK1 w - - 0 21"]21. Rf3 Kh8 22. Qg6 Qg7 23. Rg3 Rg8 24. Qh5 Qf8 25. Rg8 Kg8 26. Qd5

Correct solutions:
Cody - 12 points
Coco, Benjamin, Jalen - 10 points
Uros, Dheera, Deryk - 6 points
Yakov, Bradley - 5 points

Cody - 12 points for puzzle #301
Benjamin - 4 points for puzzle #301

Standings:
Coco - 35 points
Jalen - 31 points
Cody - 29 points
Bradley - 25 points
Deryk - 22 points
Benjamin - 19 points
Yakov - 14 points
Uros, Dheera - 6 points

Comment: 

QGD