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Oscar de la Riva Aguado vs Evgenij Ermenkov
Olympiad (2008), Dresden GER, rd 7, Nov-20
Sicilian Defense: Richter-Rauzer. Modern Variation (B61)  ·  1/2-1/2

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Jul-16-10  dhotts: <patriot> <Congrats to everyone who found 22.Bh6! I loved <jheiner>'s comparison of this move with a "slow motion train wreck".>

I found 22.Bh6 but then I found 22...Rd5 23.Nxd5 Bxd5 and now if White moves 24.Bg7 White gets mated. So is 22.Bh6 the solution?

Jul-16-10  dregoz: got it solve! 22.Bh6! and Bg7 Rook is coming on h8 mate but 22...Be3+ 23.Bxe3 then go back same 24.Bh6 and Bg7.
Jul-16-10  dhotts: <patriot> upon further analysis it appears that Black has no adequate defense against the impending train wreck.

22...Rd5 23.Nxd5 Bxd5 24.Qe2 Qxa2 25.Kd2 Qa5+ 26.c3 Bg3 26.Bg7 and Black cannot defend

Jul-16-10  Marmot PFL: What was wrong with Bh6-g7 threatening Rh8 mate? As far as I can see there was no good defense.

Also the immediate 22 Rh8+ Kxh8 23 Qh6 Qxg5 24 Qxg5 is playable, but might not be enough to win.

Jul-16-10  Patriot: <dhotts>

After 22.Bh6 Rd5 23.Nxd5 Bxd5, how about 24.Qf4? This threatens 25.Qb8+ Kh7 26.Qf8 and 25.Bg7 followed by 26.Rh8#.

Jul-16-10
Premium Chessgames Member
  doubledrooks: I went with 22. Bh6, threatening Bg7 and Rh8#. I searched and searched, but couldn't find a refutation.

The try 22. Rh8+ Kxh8 23. Qh3+ Kg8 24. Qh6 Qxg5+ 25. Qxg5 Kf8 26. Qh6+ Ke8 didn't seem to give white a decisive advantage.

Jul-16-10  dhotts: <Patriot> 24.Qf4 is the killer move and makes 22...Rd5 no better than any other line. Thanks!
Jul-16-10
Premium Chessgames Member
  patzer2: For today's Friday puzzle, a move missed in the game, 22. Bh6! leads to a mating attack where Black is helpless against the threat of Bg7 followed by Rh8#.

The alternative 22. Rh8+ Kxh8 23. Qh3+ Kg8 24. Qh6 Qxg5+ 25. Qxg5 to might also be decisive, but the win is much more difficult. Playing 22. Rh8+! out with Fritz 10, here's one possibility:

22. Rh8+ Kxh8 23. Qh3+ Kg8 24. Qh6 Qxg5+ 25. Qxg5 Bd4 26. Qf4 a6 27. g4 Bc5 28. a3 Bd6 29. Qe3 Bf8 30. Ne2 a5 31. Nd4 Bc5 32. Qh6 Bf8 33. Qf4 Bd6 34. Qg5 Bd5 35. Nb5 Bc5 36. Qh6 Bf8 37. Qd2 b6 38. Nc3 Rd6 39. Qe3 Bb7 40. a4 Rc6 41. Qe5 Rc8 42. Qb5 Bf3 43. Qxb6 Rc5 44. Nb5 Bxg4 45. Qxa5 Rf5 46. b4 Rxf6 47. Qd8 Rf1+ 48. Kb2 Rd1 49. Qb8 Kg7 50. Nc7 g5 51. a5 Be7 52. a6 Bf6+ 53. c3 Rd2+ 54. Kb3 Bd1+ 55. Ka3 Bxc3 56. Nxe6+ Kf6 57. Qh8+ Kxe6 58. Qxc3 Rd7 59. b5 g4 60. b6 Bf3 61. Qc8 Kd6 62. b7 Rxb7 63. axb7 Bxb7 64. Qxb7 f5 65. Qb8+ Ke6 66. Kb2 .

Jul-16-10  Riccitensor: DarkHorse: Does anybody know if there a Petrosian game with a similar bishop maneuver? When I looked at this puzzle, I immediately saw 22 Bh6, but only because I recognized the theme from another game -- which I think is a Petrosian game.

Yes, I think it was Petrosian-Pachman. Don't know the date though...

Jul-16-10  gropek: When I saw that my answer was too easy for Friday, I thought about that classic bishop sacrifice on h7 that was a spoiler, some weeks ago. So I just looked at defense possibilities, and it never occured me on the other "law", <If you find a good move, look for a better one>
Jul-16-10  gropek: Petrosian vs Pachman, 1961

<DarkHorse> Yes, it's Petrosian-Pachman. It's a bit similar, but not the same. The bishop went to g7, and only to prevent the black king to scape.

Jul-16-10  BOSTER: <al wazir> <22.Bh6 Qe5 23.Bg7 Be3+ 24.Kb1 Bh6! 25.Bxh6 Qxf6. White has N vs pawn.>
<mosh> <22.Bh6 Qe5 23.Bg7 Be3+ 24.Kb1 Bh6 25.Qh3!! (does not give away f6)>. Not exactly.
But after 25.Bxh6 Qxf6 26.Bg5 Qd4 27.Qxd4 Rxd4 28. Bf6 game is over.
Jul-16-10  pferd: <patzer2:
The alternative 22. Rh8+ Kxh8 23. Qh3+ Kg8 24. Qh6 Qxg5+ 25. Qxg5 to might also be decisive, but the win is much more difficult. Playing 22. Rh8+! out with Fritz 10, here's one possibility:

22. Rh8+ Kxh8 23. Qh3+ Kg8 24. Qh6 Qxg5+ 25. Qxg5 Bd4 26. Qf4 ...>

Does 26.Ne2 win? The threat is 27.Nxd4 28.Qh6 29.Qg7#

If Black defends by 26...Kf8 (trying to run with the King) then 27.Nxd4 Rxd4 28.Qh6+ Ke8 29.Qh8+ Kd7 30.Qf8 and Black's f-pawn falls while White's promotes.

Jul-16-10  tacticalmonster: Candidate: a) 22 Rh8+ and b) 22 Bh6

a) 22 Kxh8 23 Qh3+ Kg8 24 Qh6 Qxg5+ 25 Qxg5 Bd4! 26 Qh4 (if 26 Ne2 Rd5=) Bc5 27 Qh6 ( not 27 Ne4?? Be3+ with mate to follow) Bf8=

b1) 22 Qf5 23 Bg7 Be3+ 24 Kb1 Bh6 25 Qh4 Qh5 (if 25 Bxg7 26 Qh7+ Kf8 27 Qh8+ Bxh8 28 Rh8#) 26 Qxh5 gxh5 27 Bxh6

b2) 22 Rd4 23 Bg7 Qh5 24 Rxh5 gxh5 25 Qg5

Jul-16-10  ravadi: One interesting sac from Black which white needs to be careful about is 24...Rd1+, if white responds with 25. Kxd1 then Black can equalize with Qd8+ followed by Qf8. But, if White takes the Rook with Knight then there will be no problems for him.
Jul-16-10  dregoz: 22.Bh6! Qe5 23.Bg7 Be3+ 24.Kb1 Bh6 25.Bxh6 Qxf6 26.Bg5! Qe5 only but Black Rook's trap because bishop captured Rook on d8. also like 26...Qd4 27.Qxd4 Rxd4 28.Bf6! threaten Rh8#
Jul-16-10  DarkHorse: <Riccitensor,gropek> Thanks. Petrosian-Pachman is a bit different... Funny how the immediacy of a moment can bring about the reinterpretation of the past. Anyway, Thanks
Jul-16-10  tivrfoa: that was easy. I found Bh6 so quickly that I was a bit suspicious. I'm surprised how experienced users here missed this.
Jul-16-10  tivrfoa: could someone explain me why not 12. exf6?
Jul-16-10  The Rocket: the game continuation rd1 is a blunder...

if black plays rd4 its -.0.85....

bh6 is the best move in which white wins easily.

I guess rh8+ also wins in the long run

Jul-16-10  Brandon plays: This is pretty easy stuff, right? I mean Rh8+ Kxh8 Qh3+ Kg8 Qh6 Qxg5 Qxg5 but then I just realized that after Bd4 it is not so clear. Well, darn. Also, the problem with writing out a comment is that it shows the featured in following game collections and Bh6! was shown as being one of the options. That actually seems like it should work better than my plan even though it did win the queen in exchange for the rook and bishop.
Jul-16-10  xequemate: at first moment I saw 22. Rh8+ Kxh8 23. Qh3+ Kg8 24. Qh6 threatening 25. Qg7#, but I donīt perceived that if 24. ... Qxg5+ 25. Qxg5 Bd4 intercepts that mate. In the truth when I saw that the whites should loser its queen I stop my thought thinking the game are won for the blacks but later I noted that the forces are relatively equilybrated (a queen and a knight against one rook and two bishops and same number of pawns). But I think white wins anyway in the long term.

And when I read the comments I can see that 22. Bg6 sequence is good too.

Jul-17-10  wals: My Qh3 was a blunder as was the text move. Rd1.

Rybkka 3 1-cpu calculates one line could have played out as:-

22.Bh6 Be3+ 23.Bxe3 Qf5 24.Qg3 e5

25.Kb1 Bd5 26.Bg5 Rd7 27. Nxd5 Rxd5

28.Qh4 Qf1+ 29.Rxf1 Rd2 30.Rh1 Rd1+

31.Rxd1 b6 32.Rd8#

Jul-17-10  pferd: <tacticalmonster: if 26 Ne2 Rd5=>

Thanks

Jul-19-10  mosh: To Boster: You are right, of course. 25 Bxh6 Qxf6 does not work at all for black and so the game is immediately lost for him. Still I think that 25Q h3 is nicer. Can you defend against it?
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