A game for analysis by juniors, from the BCF (answers)

[Event "analysis: BCF example"]
[Site "analysis: BCF example"]
[Date "1995.??.??"]
[Round "?"]
[White "BCF example game for analysis"]
[Black "?"]
[Result "1-0"]
[ECO "E09"]
[PlyCount "55"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 Nbd7 6. O-O 6... c6 {
[DIAGRAM] a. Can you suggest a more active line for Black instead of this move?} (6...
c5 {*N.B. all answers are DR's and not BCF's!*}) 7. Nbd2 7... O-O {[DIAGRAM] b. Would
7...dxc4 be better than this move? Give a simple reason for your answer.} (7...
dxc4) 8. Qc2 b6 9. e4 9... Nxe4 {[DIAGRAM] c. This knight move turns out badly for
Black: can you suggest a sounder line of play for Black to pursue?} (9... dxe4
10. Nxe4 Bb7) 10. Nxe4 dxe4 11. Qxe4 Bb7 12. Re1 Re8 (12... Qc7 13. Bf4 Bd6 14.
Ng5 14... Nf6 {[DIAGRAM] d. Is this line with 12...Qc7 better than the line played?
Support your answer with two or three moves of analysis.} 15. Nxe6 Nxe4 16.
Nxc7 Rac8 17. Rxe4 Bxf4 18. Rxf4 Rxc7) 13. Qc2 {[DIAGRAM] e. Is this move a waste of
time? Explain your reply briefly. No. Black threatened 13...c5 breaking up the
White centre - 14.d5 in reply fail to 14...Nf6.} 13... g6 {[DIAGRAM] f-i. What is the
bad effect of this move for Black? (Weakens f6/h6) f-ii. Do you think 13...c5
would have been better (Looks a lot more to the point but allows 14.Ng5 e.g.
14...Bxg5; 15. Bxb7, Rb8)} (13... c5 14. Ng5 Bxg5 15. Bxb7 Rb8 16. Bxg5 Qxg5
17. Bc6 Red8) 14. Bf4 c5 15. d5 {[DIAGRAM] g. Would you give this move a "!", "!?" or
"?" ? (I'd give it a ! for opening up lines to exploit White's advantage in
mobility.)} 15... exd5 16. cxd5 16... Bf6 {[DIAGRAM] h-i. Should Black have played 16.
..Bxd5? h-ii. Give 3 or 4 moves of analysis to support your answer.} (16...
Bxd5 {?} 17. Rad1 Be6 18. Rxe6 fxe6 19. Ne5) 17. Rxe8+ Qxe8 18. Re1 18... Qf8 {
[DIAGRAM] i. How would White have answered instead (i) 19...Rd8, or (ii) 19...Nb8? (i)
19...Rd8; 20.Bc7 (ii) 19...Nb8; 20.Re8} 19. Qa4 Qd8 20. Nd2 g5 21. Ne4 {[DIAGRAM]}
21... Bxd5 {j. How would White have answered 21...gxf4? Give two or three
moves of analysis.} (21... gxf4 22. Qxd7 Qxd7 23. Nxf6+ Kg7 24. Nxd7) 22. Rd1
22... Bd4 {[DIAGRAM] k. How would White have answered 22...Be6? Give four or five
moves of analysis} (22... Be6 23. Nxf6+ Qxf6 24. Bxa8 gxf4 25. Rxd7 Bxd7 26.
Qxd7 Qxb2 27. Bd5) 23. Bxg5 23... f6 {[DIAGRAM] l. White can now win quite quickly by
playing either (A) 24.Bxf6, or (B) 24.Nxf6+, or (C) 24.Rxd4. Give analysis to
demonstrate the win in each case.} (23... f6 24. Bxf6 Nxf6 25. Nxf6+ Bxf6 26.
Bxd5+ Kf8) 24. Rxd4 (24. Nxf6+ Nxf6 25. Rxd4 cxd4 26. Bxf6) 24... cxd4 25.
Nxf6+ Nxf6 26. Bxf6 Qxf6 27. Bxd5+ Kh8 28. Bxa8 1-0