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Tamaz Gelashvili vs Tamara Khmiadashvili
Batumi op (2001), Batumi GEO, rd 1, Jun-26
Modern Defense: Gurgenidze Defense (B06)  ·  1-0

ANALYSIS [x]

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sac: 37.Rg3+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Dec-30-18  ChessHigherCat: I'm not sure about the whole sequence but I think the initial idea is probably right.

36. g6 Qxb3 37. Qg5 Rf8 38. Qf6+ Kg8 39. Rc7 Qd1+ 40. Kh2 Qh5 41. Rxf7 Rxf7 42. Qxf7+ Kh8 43. g7+ Kh7 44. g8=Q+ Kh6 45. Qf6+ Qg6 46. Qgh8#

Dec-30-18  mel gibson: Wow - this was a curly one with the b3 Rook under attack.

Stockfish 10 agrees with the first 2 plies & says:

36. g6

(36. g6 (g5-g6 ♔g7xg6 ♖b3-f3
♕a4-d7 g2-g4 ♖h8-h6 g4xf5+ e6xf5 ♖c1-g1+ ♔g6-h7 ♕f4-g5 ♖h6-g6 ♕g5xh4+ ♖g6-h6 ♕h4-f4 ♖h6-g6 ♖g1xg6 f7xg6 ♕f4-h4+ ♔h7-g8 ♖f3-g3 ♕d7-c6 ♕h4-h6 d5-d4+ ♔h1-h2 ♔g8-f7 ♕h6-h7+ ♔f7-e6 ♖g3xg6+ ♔e6xe5 ♕h7-g7+ ♔e5-d5 ♖g6xc6 ♘b4xc6 ♕g7-d7+ ♔d5-c5 ♕d7xf5+ ♔c5-c4 ♔h2-g2 d4-d3 ♕f5-g5 a5-a4 ♕g5-g8+ ♔c4-c5 ♕g8-f8+ ♔c5-b5 ♕f8-f5+ ♔b5-c4 ♕f5-d7 ♘c6-d4 ♕d7xa4+ ♔c4-c3 ♕a4-a5+ ♔c3-c4 ♔g2-f2 ♘d4-c2 ♔f2-f3 ♘c2-b4 ♔f3-e4 ♔c4-b3 ♕a5-a1 ♔b3-c4 ♕a1-c1+ ♘b4-c2 ♕c1-b2 ♘c2-b4 ♕b2-d2 ♔c4-c5 ♕d2-c3+ ♔c5-b5 ♔e4-d4) +10.54/40)

score for White + 10.54 depth 40.

Dec-30-18  ChessHigherCat: <Play like there's no Tamara!>

I was right about the first move but I just assumed black would play the greedy variation 36...Qxb3 instead of the more prudent Kxg6, which loses pretty fast anyway. 36....cxb3 must lose to Rc7+ but I haven't calculated it out.

Dec-30-18  mel gibson: If Black replies to take the Rook on b3 it's mate in 8.

(36. .. Qxb3

37. Qg5
(♕f4-g5 ♕b3-d1+ ♔h1-h2 ♕d1-g1+ ♔h2xg1 ♖h8-d8 g6xf7+ ♔g7-h7 f7-f8♕ ♖d8xf8 ♖c1-c7+ ♖f8-f7 ♖c7xf7+ ♔h7-h8 ♕g5-g7+) +M8/45 2)

Dec-30-18  Walter Glattke: 36.-Rh5 also lose, e.g. 37.Qf3 Rg5 38.Rc7 or 38.gxf7 37.-Qf3 Kxg6 38.g4 hxg3 e.p.39.Qxg3+ Kh7 40.Rg1 or 38.g4 Rg5 39.gxf5+ Rxf5 40.Rg1+ Rg5 41.Qf6+ in the match 39.-Qf8!? 40.g4+ fxg4 41.hxg4+ Kh4 42.Qf6+ wins.
Dec-30-18
Premium Chessgames Member
  wtpy: 6/7 for the week. If I just hadn't rushed my Friday solution.
Dec-30-18
Premium Chessgames Member
  Domdaniel: Just beautiful. Reminds me of an Alekhine game where he played 3 Queen sacs -- was it against Bogolyubov?

Here, 37.Rg3+ is only the start: more sacs are needed to win.

Dec-30-18
Premium Chessgames Member
  Domdaniel: This is the game I mean: Bogoljubov vs Alekhine, 1922
Dec-30-18  Jack Kerouac: Alpha Zero chess like. Got a half hour?
This-is-phenomenal https://www.youtube.com/watch?v=nPe...
Dec-30-18  AlicesKnight: I saw the first three White moves (mainly because, on CG, it is worth looking for a sacrifice; OTB I doubt I would) but was not sure how convincingly I could follow up. 37.Rg3+ is an extraordinary concept to clear the square and allow the Q to attack.
Dec-30-18
Premium Chessgames Member
  Breunor: Simply beautiful attacking chess.
Dec-30-18  mel gibson: < Jack Kerouac: Alpha Zero chess like. Got a half hour? This-is-phenomenal https://www.youtube.com/watch?v=nPe...

I've been enjoying watching Leela beat many chess engines: https://www.youtube.com/watch?v=o8q...
Seems like a whole new era in chess.
Neural networks are proving more powerful.

Dec-30-18
Premium Chessgames Member
  Yuridmi: My Shredder gadget calls this one a draw. Instead of 36. ... Kxg6 it gives 36. ... Qxb3; 37. Qg5 Rf8; 38. g6xf7 Kh7 followed by perpetual check. Refutation?
Dec-30-18  Articalplayer: What a crazy finish. It takes a lot of courage and certainty to make such moves as White did.
Dec-30-18
Premium Chessgames Member
  agb2002: White has a rook for a knight and two pawns.

Black threatens Qxb3 and Kg6, closing momentarily the king side.

White can expose the black king with 36.g6:

A) 36... Qxb3 37.Qg5

A.1) 37... fxg6 38.Rc7+ Kf(g)8 39.Qd8#.

A.2) 37... Nc2 38.Qf6+ Kh6 (38... Kf(g)8 39.Qxf7#) 39.g7+ Kh5(7) 40.gxh8=Q(R)#.

A.3) 37... Rf8 38.Qf6+ Kg8 (38... Kh6 39.g7+ wins) 39.Rc8 and mate soon (39... Rxc8 40.Qxf7+ Kh8 41.Qh7#; 39... Nd3 40.Qxf7+ Kh8 41.Qh7#).

A.4) 37... Rh6 38.Qxf7+ Kf(g)8 39.Rc8#.

A.5) 37... Rh7 38.gxf7+ Kxf7 (38... Kf8 39.Qg8+ Ke7 40.Qe8#) 39.Rc7+ and mate next.

B) 36... fxg6 37.Rc7+ Kf(g)8 38.Qg5 wins.

C) 36... Kxg6 37.Rcc3

C.1) 37... Qd7 38.Rg3+ hxg3 39.Rxg3+ and mate next.

C.2) 37... Kg7 38.Qg5+ Kh7 (38... Kf8 39.Rc8+ Qe8 40.Rxe8+ wins) 39.Qxh4+ Kg7 (39... Kg6 40.Rg3#; 39... Kg8 40.Rc8+ wins) 40.Rg3+ Kf8 41.Qxh8+ wins.

C.3) 37... Rg8 38.Rg3+ hxg3 39.Rxg3+ Kh5 (39... Kh7 40.Qh4#) 40.Rxg8 wins.

C.4) 37... f6 38.exf6 looks good for White. For example, 38... Kxf6 39.Qd4+ e5 40.Qb6+ Kg5 (40... Ke(f,g)7 41.Rc7+ wins) 41.Rg3+ hxg3 42.Rxg3+ Kh4 (42... Kf4 43.Qe3#; 42... Kh5 43.Qg6+ Kh4 44.Qg5#) 43.Qg6 Rh5 44.Q(R)g4+ fxg4 45.R(Q)xg4#.

D) 36... Qd7 37.gxf7 (37.Qg5 Qd8)

D.1) 37... Qxf7 38.Qg5+ Kh7 (38... Kf8 39.Rc8+ wins; 38... Qg6 39.Rc7+ wins) 39.Qxh4+ is similar to C.2.

D.2) 37... Kxf7 38.Rbc3 Na6 39.Rc6 Qb7 (39... Ra8 40.Qxh4, with the threats Qh7+ and Qf6+, looks crushing) 40.Qg5 Re8 41.Qf6+ Kg8 42.Rxe6 wins decisive material.

D.3) 37... d4 38.Rc4 looks very good for White. For example, 38... Rd8 39.Qxh4 d3 40.Qf6+ Kf8 41.Rh4 wins.

Dec-30-18  1stboard: What happens after black plays 39 ... Qf8 instead of the txt move ( Nd3 ) , looks like it hold and a fighting chance ?
Dec-30-18  ChessHigherCat: <Yuridmi: My Shredder gadget calls this one a draw. Instead of 36. ... Kxg6 it gives 36. ... Qxb3; 37. Qg5 Rf8; 38. g6xf7 Kh7 followed by perpetual check. Refutation?>

I gave a refutation of that line in the first post in the thread: 36. g6 Qxb3 37. Qg5 Rf8 38. Qf6+ Kg8 39. Rc7 Qd1+ 40. Kh2 Qh5 41. Rxf7 Rxf7 42. Qxf7+ Kh8 43. g7+ Kh7 44. g8=Q+ Kh6 45. Qf6+ Qg6 46. Qgh8#

Stockfish gives a faster refutation, though, even with a lot of kamikaze delaying tactics:

1) mate-in-8 (27 ply) 37.Qg5 Qd1+ 38.Kh2 Qh1+ 39.Kxh1 Rd8 40.gxf7+ Kh7 41.f8=Q Rxf8 42.Rc7+ Rf7 43.Rxf7+ Kh8 44.Qg7#

Dec-30-18  cormier: i didn't found it at all .....
Dec-30-18  cormier:


click for larger view

Analysis by Houdini 4 d 22 dpa done

1. = (0.00): 34...Kg6 35.Rc3 Na2 36.Rc8 Rxc8 37.Qxh4 Kg7 38.Qh6+ Kg8 39.g6 fxg6 40.Qxg6+ Kh8 41.Qh5+ Kg7 42.Qg5+ Kf7 43.Qf6+ Ke8 44.Qg6+ Kf8 45.Qh6+ Kf7 46.Qf6+ Ke8

2. = (0.22): 34...Qa6 35.Qe3 Qc6 36.Qa7 Qa8 37.Qd4 Qd8 38.Rc3 Na2 39.Rc5 Nb4 40.Rg1 Kg6 41.Kh2 Rh5 42.Rf1 Kg7 43.g6 Kxg6 44.Rfc1 Rh8 45.Rc7 Qg5 46.Kh1 Rb8

Dec-30-18  cormier:


click for larger view

Analysis by Houdini 4 d 24 dpa

1. + / - (1.03): 24.Nc3 Nb4 25.Rb2 Rg8 26.Be3 Rg7 27.Na2 Nd5 28.Bd2 Ra8 29.Qf3 Na6 30.Rc1 Rc8 31.Kh2 Nab4 32.Nxb4 Nxb4 33.Qc3 Qd7 34.Qc4 Rd8 35.Be3 Nd5 36.Bxd5 cxd5 37.Qc7 Bb4

2. + / - (0.82): 24.Rfc1 Nb4 25.Rb2 Nd5 26.Rb7 Rb6 27.Rxb6 Qxb6 28.Kh2 Nd7 29.Nc3 Kg7 30.Bxd5 cxd5 31.Nxd5 Qb2 32.Rf1 Bd8 33.Bg1 Rf8 34.Rf3 Rh8 35.Nc3 Nb6 36.Rd3 Qc2 37.Qd1 Qxd1 38.Rxd1 g5 39.Rf1 Kg6 40.fxg5 Bxg5

Dec-30-18  cormier:


click for larger view

Analysis by Houdini 4 d 24 dpa

1. + / = (0.37): 13...Be7 14.c3 a5 15.Rad1(T) Nd7 16.b3 a4 17.c4 0-0 18.Ra1 Kg7 19.c5 b5 20.b4 Rh8 21.Rab1 Qc7 22.Rbd1 Rhg8 23.Kh2 Rac8 24.Rc1 Rcd8 25.Bxf5 gxf5

2. + / = (0.38): 13...a5 14.c3 Be7 15.Rad1(T)

Dec-30-18  cormier:


click for larger view

Analysis by Houdini 4 d 24 dpa done

1. = (0.22): 6...Nh6 7.Bd3 a5 8.0-0(T) Na6 9.a3 0-0 10.Qd2 Bg4 11.Ne2 Qb6 12.h3 Bf5 13.Nh4 Bxd3 14.Qxd3 e6 15.b3 Qd8 16.Qg3 Re8 17.Kh2 Nc7 18.a4 Nf5 19.Nxf5 exf5 20.Ba3 Ne6 21.Bd6

2. = (0.22): 6...a5 7.Bd3 Nh6 8.0-0(T)

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