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Aleksandar Kovacevic vs Georgi Tringov
"Copacetic Kovacevic" (game of the day Apr-25-2018)
Arandjelovac (1993), rd 11
Sicilian Defense: Najdorf Variation (B90)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jan-13-05
Premium Chessgames Member
  catlover: It's sorta funny how White's king looks so exposed and lonely in the middle of the board around move 39, but it's the black king, with the queen lined up with it on the a-file, that is exposed and in danger.
Jan-13-05
Premium Chessgames Member
  patzer2: Kovacevic's 40. Ra1! Rb8 41. Qxa4!initiates an amusing but effective pinning combination.
Jan-14-05  Andrew Chapman: 40..Rb8 was a blunder. The bishop on a4 can go to c6 or b3 and black is OK. Bf6 to e7 also works.
Jan-14-05
Premium Chessgames Member
  patzer2: <Andrew Chapman> You are correct about 40. Ra1 Rb8?? Instead, 40...Bc6 41. Rxa2 Qxa2 42. Qb6 Rc8 43. Nd4 Bd8! 44. Qb4 Ba5 45. Qb3 Qxb3+ 46. Ncxb3 Bb4 47. Ncxd6 Rxc6 48. Kd3 leads to a drawish ending. In addition to the alternatives 40...Bc6, 40...Bb3! and 40...Be7!, the move 40...Bg5+! also seems to give Black equality.
Feb-18-05
Premium Chessgames Member
  Gypsy: <JohnBoy> OK, I will take the Quichoteic side here: 53...Kc3.
Feb-18-05  JohnBoy: Glad you'll play this out with me, <Gypsy>. 54.Rc6+
Feb-18-05
Premium Chessgames Member
  Gypsy: <JohnBoy> 53...Kc3 54.Rc6+ Kd2
Feb-18-05  JohnBoy: <Gypsy> - 53...Kc3 54.Rc6+ Kd2 55.Nf3+ (I think we are near an end)
Feb-18-05
Premium Chessgames Member
  Gypsy: <JohnBoy_> - 53...Kc3 54.Rc6+ Kd2 55.Nf3+ Kd1 (me too; no tricks left)
Feb-19-05  JohnBoy: <Gypsy> - 53...Kc3 54.Rc6+ Kd2 55.Nf3+ Kd1 56.Ne3+ - what say we try again, with me playing black?
Feb-19-05
Premium Chessgames Member
  Gypsy: <JohnBoy: - what say we try again, with me playing black?> Pleasure; what is your move?

Also, may I recommend to your atention a rook endgame of the finest grade: Rubinstein vs Alekhine, 1911. <Beatgiant> and <tamar> found some great possibilities in there.

Apr-25-18
Premium Chessgames Member
  ajk68: It's amassing that after 38. Nc5?? Black has a forced mate, but plays the non-obvious and also incorrect move to allow the game to equalize.

Black had many other decisive advantages earlier and also let these slip away!

Apr-25-18  morfishine: Copacetic postings back in 2005
Apr-25-18  paavoh: Learning new words every day: <offramp's> definition is quite satisfactory too. I think I'll use it.
Apr-25-18  goodevans: <Jan-13-05 kevin86: I think his game should be a draw-black must have exceeded time control...>

According to Nalimov Tablebases the final position is mate in 13 beginning <53...Kb4 54.Rh6> but having played it through the technique isn't obvious.

I doubt many players gen up on R+N+N v R so it would probably have been worth playing on a bit. Maybe black did indeed exceed the time control.

Apr-25-18  Ironmanth: Love this game! Amazing attacks and counterattacks. Thanks for this one.
Apr-25-18  lzromeu: beautiful almost forced mate
53...Re1+ 54. Ne3+ Kb4 55. Kd3 Rc1 56. Ndc2+ Kb3 57. Rb6+ Ka2 58. Kc3 Rg1 59. Ra6+ Kb1 60. Ra1#
Apr-25-18  Strelets: Kovačević keeps it copacetic. Local H would be proud.
Apr-25-18  PJs Studio: At first glance I thought black was doing quite well until 28...f6. The exchanges left the black king with too little shelter for my tastes. Kovacevic showed nicely that he agreed.

This is one of those rare situations where Stockfish agreed with me. 28...f6? Still holds a small advantage for Black but 28...e5! Is virtually winning for black: 28...e5 29. fxe5 dxe5 30. Qxf7 Re8 31. Nf5 Nxd3 32. Kxd3 Bxf5 33. exf5.

I wouldn’t have looked if I didn’t assume 28...f6 was a stinker.

Apr-25-18  PJs Studio: Oops. I forgot. Following the analysis above 33...Rd8+! followed by Qb6+ and white’s king is the one without shelter.
Apr-25-18
Premium Chessgames Member
  AylerKupp: In case anyone cares, the position after 49.Rxf6 is a theoretical win for White in 19 moves per the Lomonosov tablebases: 49...Kc4 50.Nc7 Kc5 51.Nce6 Kc4 52.Nf5 Rb6 53.Rh6 Ra6 54.Ke4 Rc6 55.Ne3 Kb4 56.Kd5 Rc8 57.Rh3 Rc3 58.Rh4+ Ka5 59.Nf5 Re3+ 51.Kc6 Rb3 52.Nd6 Rb6+ 53.Kc5 Rb3 54.Nc4+ Ka4 55.Nd2+ Ka3 56.Nxb3 Kxb3 57.Rh2 Kc3 58.Nf4 Kb3 59.Nd5 Ka3 60.Kc4 Ka4 61.Ra2#

Of course, having a theoretical win and winning are not the same thing, particularly if time is short.

Apr-25-18
Premium Chessgames Member
  ajk68: Interesting, my dad was using the word copacetic occasionally over 40 years ago - which is really even before it started getting used more frequently (see google graph on the word's usage). We would typically be fixing something around the house.

I think the nuance of the word is that all the pieces of an apparatus are in good relation to each other - in good working order.

Apr-25-18
Premium Chessgames Member
  ChessHigherCat: < ajk68: Interesting, my dad was using the word copacetic occasionally over 40 years ago - which is really even before it started getting used more frequently (see google graph on the word's usage). We would typically be fixing something around the house. I think the nuance of the word is that all the pieces of an apparatus are in good relation to each other - in good working order.>

I confess I've never even heard that word before. The antonym should be "copathetic": all the parts work miserably with one another and are in wretched condition.

Apr-25-18  cormier:


click for larger view

Analysis by Houdini 4 Pro w32: d 23 done

1. - / + (-0.99): 22...Qb7 23.gxh6 Rxh6 24.e5 Qxf3 25.Nxf3 d5 26.Bd3 Rdh8 27.Rdg1 g6 28.Rg4 Ra8 29.Kd2 Ra2 30.Rb1 Kb6 31.Ned4 Be8 32.Be2 Na4 33.Kc1 Rh8 34.Ng5 Bc5

<<2. - / + (-0.83): 22...Ra8> 23.Kd2> g6 24.Rdg1 Qb7 25.Ng3 Bf8 26.Qe3 Na4 27.Kc1 Bg7 28.gxh6 Rxh6 29.Rd1 Nb6 30.Bb3 Ra1+ 31.Kd2 Ra5 32.Nge2 Rh8 33.c3 bxc3+ 34.bxc3 Qa6 35.Rb1 Rc5 36.Kc1

Apr-25-18  cormier:


click for larger view

Analysis by Houdini 4

<<26...e5> 27.Kd2> exd4 28.cxd4 Nxd3 29.Qxd3 Ra2 30.Ke3 Kb8 31.Rh1 Rxh1 32.Rxh1 Rxb2 33.Nc3 Be6 34.Rh7 Rg2 35.Kf3 Rg1 36.Kf2 Rc1 37.Rxg7 b2 38.d5 Qb6+ 39.Kf3 -+ (-4.32) Depth: 15 dpa

<<26...e5> 27.Bb1> Ra1 28.Rh1 Rxh1 29.Rxh1 exd4 30.Kd2 Na4 31.cxd4 Qb4+ 32.Ke3 Nxb2 33.Kf2 Nc4 34.Nc3 Bc6 35.Rc1 Kb7 36.Qh3 b2 37.Rd1 Ra3 38.Rd3 Bd8 39.Ke2 Bb6 40.g6 fxg6 41.d5 Ba4 42.Nxa4 Qxa4 43.Rxa3 Qxa3 44.Qd7+ Ka6 -+ (-5.95) Depth: 19 dpa

<<26...e5> 27.fxe5> dxe5 28.Qxf7 Ra1+ 29.Kd2 Rxd1+ 30.Kxd1 Nxd3 31.Kd2 exd4 32.Qxe7 Re8 33.Qa3 Nxb2 34.Qc5+ Qc6 35.Qxc6+ Bxc6 36.cxd4 Bxe4 37.Kc3 Bc2 38.Kxb2 Rxe2 39.Ra1 Kd6 40.Ra5 Rd2 41.Kc3 Rd3+ 42.Kb2 Rxd4 43.Ra7 g6 44.Rb7 Rd5 45.Rb6+ Kc5 46.Ra6 Kc4 47.Rc6+ -+ (-6.12) Depth: 20 dpa

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