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Ngoc Truongson Nguyen vs Habibullah Fidaeyee
"Good Morning, Vietnam" (game of the day Aug-13-2006)
Asian Team Championship (2005), Esfahan IRI, rd 2, Dec-22
Queen's Gambit Declined: Exchange. Positional Variation (D35)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Aug-13-06
Premium Chessgames Member
  al wazir: Why didn't black play 20...Bxh4 ? Was he afraid of an attack along the half-open h file? It seems to me that black's threats on the f file were stronger.

And why didn't white play Nf4 sooner? I think 29. Nf4 Qe8 30. Ng6+ looks like winning.

Aug-13-06  Cryptic: Hi Al wazir. regarding the <29. Nf4 Qe8 30. Ng6+>, do you mean something like 30... Kxh7 31. Nxe7+ Kh8 (not many options really) 32. Nxc6

Perhaps blacks follow up of <Qe8> is not so good, how is 29. Qg4 or 29. Rxf4 ?

<20...Bxh4> is a mystery to me too.

Aug-13-06
Premium Chessgames Member
  Albertan: Hi al wazir. The move 20...Bxh4 doesn't seem to have good prospects.For example:

20...Bxh4 21. g3 Bd8 22. Qg6 Re8 23. f4 Rc7 (23... Re7 24. f5 exf5 25. Qxf5 Bc7 26.Rf4 Kh8 27. Rdf1 Rg8 28. Bf3 ) 24. f5 exf5 25. Bxf5 Qxg6 26. Bxg6 Ree7 27. Nb5 Rc6 28. Nd6 c3 29. bxc3 Bc7 30. Rde1 Bb8

As far as playing 29.Nf4 Black can play 29...Qg4 rather than your suggestion of 29...Qe8. And after 29...Qg4 play might continue: 30.Kg2 Bxh4 31. Ng6+ Rxg6 32. Qxg6 Qe2+ 33. Kg1 Qe3+ 34. Kh1 Rf2 35. Rxf2 Qxf2 36.Qf5 Bxg3 37. Qxf2 Bxf2 38.Bg6 Kg8 39.Kg2 Bh4 and White has a very good position.

Aug-13-06  rookattack: Can someone please tell me why white played 36.e7?
Aug-13-06
Premium Chessgames Member
  Peligroso Patzer: <rookattack: Can someone please tell me why white played 36.e7?>

I believe there were two reasons for this move. One point was to divert one of the Black pieces attacking the Pawn on c3. If Black had been able to play ... Rxc3 with attack on the White Queen, it could have granted him some initiative. The other point behind this move can be seen two moves later. After 38. Ne5, White has a strong threat of 39. Rf7+ followed by 39. ... Kh8 40. Ng6+ winning the Black Queen (40. ... Qxg6 41. Bxg6). This threat (39. Rf7+ and following moves) only exists because the 7th rank is blocked by the Black Bishop, which played 36. ... Bxe7 in reply to the move that is the subject of your question. Note that the best Black could come up with at his move 38 was to move this Bishop to unblock the rank. This would not have been necessary if the Bishop had not been diverted from b4 to e7.

Aug-13-06
Premium Chessgames Member
  Peligroso Patzer: Taking another look at the position after 35. ... Rc7, I also notice that the blocking of the 7th rank with 36. e7 prevented the newly threatened 36. ... Rxh7 (which would have won a piece for Black). It seems to me that 36. e7 was a very strong move, almost certainly the best in the position.
Aug-13-06  RandomVisitor: 36.Bd3 Nc4 37.Qf2 Ne5 38.dxe5 Bc5 39.e7 Qxe7 40.Ng6+ Kg7 41.Nxe7 Bxf2 42.Nxd5 Rc5 5.81/20
Aug-13-06  RandomVisitor: Rybka sees several moves that might have been better than what was played: 14...Qb6, 17...Qxe6, 20...Bxh4, 23...Na8, 27...g6, 32...c3, 36.Bd3. These might be worth investigating.
Aug-13-06
Premium Chessgames Member
  patzer2: Black needed to try the ugly 27...g5 (or 27...g6 as sugged by RV) 28. hxg5 to stave off immediate defeat. After 27...Qh5? 28. Bh7+ , White has a winning attack on the now decisively weakened Kinside.
Aug-13-06
Premium Chessgames Member
  patzer2: A followup winning even quicker than 35. e6! is 35. Ng6+!
Aug-13-06
Premium Chessgames Member
  patzer2: <RandomVisitor> The improvement 31. Nf4! , with the threat of a decisive discovered check, seems to end all hope of further resistance for Black.
Aug-13-06  RandomVisitor: <patzer2>agreed, after Black's 27th move there is no reasonable hope for Black.
Aug-13-06
Premium Chessgames Member
  al wazir: <Cryptic: regarding the <29. Nf4 Qe8 30. Ng6+>, do you mean something like 30... Kxh7 31. Nxe7+ Kh8> I had in mind 31. Nxf8+ Kg8/Kh8 32. Qh7#. (29...Qg4 or Rxf4 is forced.)

<Albertan: The move 20...Bxh4 doesn't seem to have good prospects.> I can't tell from your analysis why 20...Bxh4 is bad. How did it weaken black or contribute to white's game?

As for 29. Nf4, I agree that 29...Qg4 is possible, but the same threats are there. And the ♘ doesn't have to go to f4 on move 29; the opportunity was there for several moves. Fritz, channeling through <patzer2> (see his post, above), thinks 31. Nf4 was an improvement over the move actually played.

Aug-13-06  psmith: <al wazir>, <Albertan> I think a better line for White after 20...Bxh4 would be something like this:

20...Bxh4 21. g3 Bd8 22. Qg6 Re8 23. Kg2 followed by Rh1. For example, I found the following variation with Fritz 5.32:

23... Bc7 24. Rh1 Nd7 25. Rxh6 Nf8 26. Rh8+! Kxh8 27. Qf7 winning.

Of course Black has other defenses but this looks worth investigating.

Aug-13-06
Premium Chessgames Member
  patzer2: <I can't tell from your analysis why 20...Bxh4 is bad. How did it weaken black or contribute to white's game?> It's not so much that 20...Bxh4 is bad or worse than the declined alternative(s). I think it's just that 20. h4! is strong, driving the Bishop off a strong diagonal and away from any credible defense of the Kingside. For example 20. h4! Bxh4 21. g3 Bg5 22. f4! Bd8 23. Qg6! and Black has a strong advantage with the initiative.

However, as you indicate, declining the pawn offer doesn't seem to help Black's situation any.

On another note, this young Vietnamese GM shows great promise in his understanding of both tactics and positional play. It will be interesting to see how he fares against the super GMs.

Aug-13-06
Premium Chessgames Member
  Albertan: al wazir:

<Albertan: The move 20...Bxh4 doesn't seem to have good prospects.> I can't tell from your analysis why 20...Bxh4 is bad. How did it weaken black or contribute to white's game?

al wazir for one thing the move 20...Bxh4 costs two tempi (one to capture the pawn and in the line 20...Bxh4 21.g3 Bd8 22.Qg6 another when White forces back the bishop by 21.g3.Time is one of the key elements of chess, and by spending two tempi,Black is forced on the defensive. Secondly, due to the capture 20...Bxh4 White gets to aggressively post his queen in a dangerous position which wins another tempo by creating a double attack against the weak Black e-pawn.Thirdly, in the line 20...Bxh4 21.g3 Bd8 22.Qg6 Re8 23.f4 Re7 24.f5 exf5 25.Qxf5 White creates the threat of 26.Qf8+ and after Black plays a move to deal with this threat ie. 25...Bc7 White can play 26.Ne2 and after 26...Rd8 continue with 27.Nf4 Rf7 28.Qe6 Re8 29.Qxc6 bxc6 30.Be6 Rxe6 31.Nxe6 Re7 32.Rf8+ Kh7 (the only move) 33.Nxc7 Rxc7 34.Re8 Kg6 35.e6 Nc8 36.Rd8 Nb6 37.Re1 Re7 38.Rd6 Na4 39.Re2 Kf5 40.Rxc6

Aug-13-06
Premium Chessgames Member
  kevin86: Black has the grim choice of which piece will checkmate him.

41... Kh8 42 Nxf7#
41... Kf8 43 Qxf7#

As subtle as a Sherman tank-but will have to do until something better comes along.

Aug-13-06
Premium Chessgames Member
  al wazir: <Albertan, Cryptic, patzer2, psmith>: Thank you.
Nov-24-09  Whitehat1963: Good puzzle after 39...Qd8.
Nov-25-09  Whitehat1963: Rather, after 38...Bd6.
Feb-23-12
Premium Chessgames Member
  Penguincw: Easy mate in 1.

If 41...♔f8 then 42.♕xf7# 1-0


click for larger view

If 41...♔h8 then a really nice mate. 42.Nxf7# 1-0.


click for larger view

Aug-19-12  vinidivici: how if 20...Bxh4 ?
Aug-19-12  vinidivici: how about it?
Feb-23-20
Premium Chessgames Member
  WTHarvey: White mates in 3.


click for larger view

40. ?

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