The first piece offering is the demolition of pawn structure sacrfice 30. Bxe6!?, followed by a second and riskier attacking positional sacrifice in 36. Rxd6!?

Gong's play has inspired me to start a new collection of "true attacking sacrifices" where players take risks to gain an attacking initiative without a clear advantage in sight. I'll include these two moves to start the collection.

A good explanation, making the distinction between pseudo and true sacrfices (and showing the overlap with "positional sacrifices") can be found at Wikipedia (chess sacrifices), but I can't get the link to post here.

http://en.wikipedia.org/wiki/Sacrif...

<1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 a6>

Also frequently played is 4...Nc6 as
in Kamsky vs Sutovsky, 2007.

<5. Bg5> More popular are 5. c4 as in Naiditsch vs Z Kozul, 2006 and 5. Be3 as in Z Jovanovic vs Z Kozul, 2006.

<5...h6>

More frequently played is 5...Nc6 as in
A Bachmann vs Bu Xiangzhi, 2006.

<6. Bh4 Nc6 7. Qd2 g5>

The alternative 7...Nf6, as in
Gong Qianyun vs Zhu Chen, 2001 is worth a try.

<8. Bg3 Nf6>

A solid alternative is 8...Bg7 as in F Beck vs W Moranda, 2007.

<9. Nc3 Nh5>
Less risky perhaps is 9...Bg7 as in
Rozentalis vs Ftacnik, 1994.

<10. Nd5 Bg7 11. c3 b5>

Black needed to try 17... b4! 18. Rd1 (18. cxb4? Qxb4 19. Rb1 Bc6 20. Bd1 Rd8 21. b3 d5 22. exd5 Bxd5 ) 18... Rd8 19. Rc1 bxc3 20. bxc3 Rc8 21. Qd3 Qc5 22. O-O O-O 23. Rfd1 Rfd8 .

<18. Rd1! Rad8 19. O-O h5 20. Nf3 g4 21. Nh4 Bh6?>

Holding for Black is 21... b4! 22. cxb4 Qxb4 23. Qc7+ Ke8 24. Ng6 Rd7 25. Qb8+ Rd8 26. Qc7 Rd7 27. Qb8+ Rd8 28. Qc7 =.

<22. b4 Nc4 23. Nxc4 bxc4 24. Bxc4 Rc8 25. Qe2 Bg7 26. Kh2 Be5 27. a5 Qa7 28. f4 gxf3 29. Qxf3 Rcf8 30. Bxe6!?>

Just when Black seems to have things under control, White plays this demolition sacrifice -- giving up her Bishop to destroy Black's pawn structure and secure an attacking initiative.

<30...Kxe6> This reply is forced, as others lose quickly.

Not 30... fxe6? 31. Ng6+ Ke8 32. Qxf8+ Rxf8 33. Rxf8+ Kd7 34. Nxe5+ .

<31. Qf5+ Ke7 32. Qg5+ Ke6 33. Qf5+?!>

Winning immediately is 33. Nf3!
Bxc3 34. Qc1 Bxb4? 35. Qc7! f6 36. Nd4+ Ke5 37. Qe7#

<33... Ke7 34. Qg5+ Ke6 35. Qf5+ Ke7 36. Rxd6!?>

Instead of taking a draw by perpetual with 36. Qg5+ =, White takes a risk to play this Tal-like sacrifice -- giving up her Rook as a second piece to demolish another one of Black's few remaining pawns to try and keep Black's King exposed and on the run.

<36...Bxd6> This is forced.

Not 36... Kxd6? 37. Rd1+! Kc7
38. Qxe5+ Kc8 39. Nf5! Re8 (39... Bc6 40. Nd6+ Kc7 41. Nb5+ Kb7 42. Qc7+ Ka8 43. Qxa7#) 40. Nd6+ Kb8 41. Nxe8+ Ka8 42. Rd8+ Bc8 43. Rxc8+ Kb7 44. Qc7#.

<37. Qf6+ Kd7 38. Rd1 Kc8 39. Rxd6 Bxe4?> Although not obvious at first, this pawn grab loses.

Instead, Black can play for advantage with 39... Kb8! 40. Rb6 Rhg8 41. Nf5 Ka8 42. Ne7 Rg4 43. Nc6 Rg6 44. Nxa7 Rxf6 45. Rxf6 Kxa7 46. e5 Bd5 47. Rd6 Be6 .

Or she might try to force a draw by repetition with 39... Qe3! 40. Nf5 Qxe4 41. Rc6+ Kb8 42. Qd6+ Ka7 43. Rxa6+ Bxa6 44. Qb6+ Ka8 45. Qxa6+ Kb8 46. Qd6+ Ka7 47. Qb6+ Ka8 48. Qa6+ Kb8 49. Qd6+ =

<40. Nf5!> Now White has a forced win.

<40...Bb7 41. Rb6 Rd8 42. Ne7+ Kd7 43. Nc6 Qa8>

There's no escaping with 43... Bxc6 44. Qxf7+ Kd6 45. Qf6+ Kd7 46. Qxc6+ Ke7 47. Qe6+ Kf8 48. Qf6+ Qf7 49. Qxd8+ Kg7 50. Qg5+ Kf8 51. Rb8+ Qe8 52. Qf6+ Kg8 53. Rxe8+ Kh7 54. Rxh8#

<44. Qxf7+ Kc8 45. Ne7+ Kb8 46. Qf4+ Ka7 47. Qc7 1-0.>

I like those two sacrifices that <patzer2> described.

Black probably could have salvaged a draw also by playing 39… Rd8. If 40 Nf5 then 40…Rhe8 as pictured below.

click for larger view

So here's a short break down of the combination:

41. Qe5!! Re8

[41... Ba8 42. Ne7+ Kc7 43. Rd1+ Kb7 44. Rd7#;
41... Rd8 42. Ne7+ Kc7 43. Rd2+ Rd6 44. Qxd6#]

42.♘e7+ ♖xe7

[42... Kb8 43. Rd8#;
42... Kc7 43. Rd1#]

43. ♕xh8+ ♔c7 44. ♕d8#.