Bishop/Rook sac for a lethal attack on white's queenside with Queen and 2 Knights. I'm proud it worked, though my opponent may have made some miscalculations.

If you want an inline PGN viewer and you use Chrome, use the (Reddit PGN Viewer)[https://chrome.google.com/webstore/detail/hplecpnihkigeaiobbmfnfblepiadjdh].

Credits to Constantine de Castro

I play Black.

[pgn][Event "Live Chess"] [Site "Chess.com"] [Date "2011.08.17"] [White "kawabunga36"] [Black "tomthecat44"] [Result "0-1"]

1.d4 d5 2.Nc3 Nf6 3.f3 e6 4.Bg5 Be7 5.e3 O-O 6.Qd3 c5 7.O-O-O Nbd7 8.e4 c4 9.Qd2 Qa5 10.e5 Bb4 11.a3 Bxa3 12.Nb1 Bxb2+ 13.Kxb2 Qb5+ 14.Kc1 Ne8 15.Be7 Nb6 16.Na3 Qa4 17.Kb2 Nc7 18.Bxf8 Kxf8 19.Ra1 Nb5 20.Nb1 c3+ 21.Nxc3 Qb4+ 22.Kc1 Nxc3 23.Ne2 Nba4 24.Rxa4 Qb1# 0-1 [/pgn]

6. .. c5

I think a blunder on my end. After BxNb3 it's either blow up my king's position with g7xBf6 or use my bishop to recapture and lose my pawn on c5. I believe Nbd7 would have been better, then the pawn push.

7. O-O-O?! I was relieved he did not take. He made this move quickly during the live match so I guess he had a plan.

8. .. c4! I gained the initiative and denied his pawn trade by attacking the Queen.

9. Qd2 .. I think Qe3 would have been better. I took advantage of Qd2 by threatening mate later in a1, b1.

9. .. Qa5 I think a good move. Bringing the Queen to the queenside of the board, and putting pressure on a2.

10. e5 Bb4! This move sets up the execution. To be honest, I think my opponent could have defended better, but the game was well fought I think on both ends.

11. a3 Bxa3 I'm going to stop annotating, because I think this move was a serious blunder, though it worked because of my opponent's next move.

(edit: On second thought, I knew my only chance of victory lied in the queenside attack. I remember this feeling of attack on the Queenside that led me to move Bxa3.)

12. Nb1?! .. I think after b2xBa3 Qxa3+, king moves and as fine, though vulnerable to some pestering. Either way, I felt as though I had to use the bishop so my Knight didn't get taken by BxNf6. White has to reply to this or else my next move is Bd4, threatening Qa1+, Nb1, BxQd2.

12. .. Bxb2+ Keeping the initiative on my bishop and drawing the king out. This move allows a series of checks that get my queen out of danger and my Knight on f6.

14. .. Ne8!? Sacrificing the rook (to be honest, unintentionally) but moving my Knight over to the Queenside for the big attack. Nh4 was just too passive and I couldn't allow his bishop to take. I needed this Knight to make my big attack.

15. .. Nb6 Threatening Na4 Qb2#

17. .. Nc7 I calculated a few moves with my queen and that other Knight and decided I needed the potential Nb5 to do anything lethal.

18. BxRf8 I'm glad he did this. It weakened the Knight on a3 by removing the bishop defender. My rook was inactive and not fighting anyway, so I was ok with the exchange. My kingside is now perfectly fine but I am 3 points down. However, I have the attack.

19. Ra1 Nb5 Threatening a pawn push to fork white's King and Queen.

20. Nb1? Better would have been Nfe2, preventing the pawn push.

22. .. NxNc3 Gaining back material and equalizing.

23. .. Nba4!! the finale. Threatening Qb2#. If Ne2xc3, then Qb2+, Qxa1+ then Knight is mine. If queen takes, knight takes queen, if rook takes, mate on b2.`

My opponent blunders and I get the win. An intense game for me, but looking back, I can still see tons of wholes that a worthy opponent could have exploited. Still, it was fun and worked. Thanks for reading, gl everyone!