Alexander Shabalov vs Krishnan Sasikiran (2008)

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Alexander Shabalov vs Krishnan Sasikiran
Mindsports (2008) (rapid), Beijing CHN, rd 8, Oct-16
Spanish Game: Morphy Defense. Wormald Attack (C77) · 1-0

ANALYSIS [x]

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sac: 32.Nxh6	PGN: download \| view \| print	Help: general \| java-troubleshooting

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Dec-13-18		ChessHigherCat: At first I was stymied because I thought 32. Nxh6 only draws at best: 32. Nxh6 gxh6 33. Rxf6 Rg7 34. Qxh6+ Rh7 35. Qg6 Rg7 36. Qg6+, etc. Same problem with 32. Nxg7 Rxg7 33. Qxh6+ Rh7 34. Qg6 Rg7 35. Qh6+ Rh7 Then it finally dawned on me 32. Nxh6 gxh6 33. Rxf6 Rg7 34. Qxh6+ Rh7 35. Rxe6!! (Rxh6?? Rxh6#) Rxe6 36. Qxe6 and white is 3 pawns up

Dec-13-18		ChessHigherCat: Whoops, forgot to analyze the 33...Nxg7 variant. <Al's not quiet on the eastern front!>

Dec-13-18		agb2002: Black threatens Rxe3. White can destroy the black castle with 32.Nxh6 gxh6 (32... Rxe3 33.Nf7+ wins an exchange) 33.Rxf6: A) 33... Nc5 34.Qxh6+ Rh7 35.Rf8+ Qxf8 36.Qxf8#. B) 33... Rg7 34.Qxh6+ B.1) 34... Rh7 35.Rxe6 wins decisive material. For example, 35... Rxe6 (35... Rxh6 36.Rxh6#) 36.Qxe6 Rxh4 37.Rxh4 Qxh4 38.Qh3 + - [2P]. B.2) 34... Kg8 35.Rxe6 Rxg4 (35... Rxe6 36.Qxe6+) 36.Re5 wins decisive material. C) 33... Re7 34.Qxh6+ Rh7 35.Rxe6 transposes to B.1.

Dec-13-18		Walter Glattke: 32.Nxh6 Qf8 33.Nf5 white Advantage.

Dec-13-18		patzer2: Stockfish 9 indicates the 32. Nxh6 game continuation is not a clear cut win because 32...gxh6 33. Rxf6 h5! 34. Rg3 Qc8 35. Qc2 ⩲ (+0.48 @ 34 ply) puts up much more resistance than the game continuation 33...Ng7? 34. Rgf4 +- (+9.97 @ 31 ply).

Dec-13-18		WorstPlayerEver: Not a puzzle.

Dec-13-18		mel gibson: Stockfish 10 shows that there is no forced mate: 32. Nxh6 (32. Nxh6 (♘f5xh6 g7xh6 ♖f1xf6 h6-h5 ♖g4-g3 ♕d8-c8 ♕g6-c2 ♘e6-f8 ♕c2-d2 ♘f8-h7 ♖f6-d6 ♖b7-d7 ♕d2-d4 ♖d7xd6 ♕d4xe5+ ♖d6-f6 ♖g3-g5 ♕c8-b7 ♖g5xh5 ♕b7-f7 ♕e5xd5 ♖f6-f1+ ♔g1-h2 ♕f7xd5 ♖h5xd5 ♖f1-b1 ♖d5-c5 ♖b1xb2 ♔h2-g3 ♖b2-a2 ♔g3-f3 ♖a2-a3 ♖c5xc4 ♖a3xa5 g2-g4 ♘h7-f8 e3-e4 ♘f8-e6 ♖c4-c6 ♖a5-e5 ♖c6xa6 ♘e6-c5 ♖a6-c6 ♘c5xe4 ♔f3-f4 ♖e5-e7 g4-g5) +0.84/39 123) score for White +0.84 depth 39.

Dec-13-18		malt: Went for 32.N:h6 gh6 33.Q:h6+ Rh7 34.R:f6! (34.Q:f6 Q:f6 35.R:f6 ) Did not see 33.R:f6

Dec-13-18		cocker: 33... Ng7 was losing move.

Dec-13-18		saturn2: I looked at 32. Nxh6 gxh6 33. Rxf6 33...Re7 34. Qxh6+ Rh7 35. Rxe6 Rxh6 36. Rxh6# 33...Ng7 34. Rgf4 Re8 35. Rf7 Rg8 36. Qxh6#

Dec-13-18		Dionysius1: Very nice - I like the concentration on the f-file instead of the more obvious 33. or 34.♕xh6 which goes nowhere very much.

Dec-13-18		5hrsolver: I went with. 32. Nxh6 gxh6 33. Qxh6+ Rh7 34. Rxf6 Rxh6 35. Rxh6# but I guess there are defenses here. 33.Rxf6 as played in the game is better attacking the knight right away. Good play by white.

Dec-13-18		thegoodanarchist: Got the first two moves. Then I couldn't stand the suspense any longer, and I checked the game score. I will take partial credit

Dec-13-18		saturn2: I think the refutation of the line given by <malt 33.Q:h6+ Rh7 34.R:f6> is 34...Rh5

Dec-13-18		landshark: 32.Nxh6 good enough for me - recapturing the N leads to disaster: ....gxh6, 33.Rxf6 and now: 33.... N moves, 34.Qxh6+ mates 33... Re7, 34.Qxh6+,Rh7 35.RxN! because ...RxQ 35.RxR# 33...Qe7 34.Qxh6+,Qh7 35.Rf8+ mates. Knowing the N is immune and B has no counterplay means the N may soon set up shop on f7 with further dividends soon to follow -

Dec-13-18		cormier: click for larger view Analysis by Houdini 4 d 27 dpa <1. + / = (0.48): 33...Qc8> 34.Qc2 Rh5 35.Qd1 Ng7 36.Rb6 Rf5 37.Rxh6+ Kg8 38.Qd4 Rbf7 39.Rg3 Qc7 40.Kh2 Re5 41.Qb6 Re4 42.Qxa6 Rg4 43.Qa8+ Rf8 44.Qxd5+ Rf7 45.Qa8+ Rf8 46.Rh8+ Kxh8 47.Qxf8+ Kh7 48.Qf3 Rxg3 49.Qxg3 Qxa5 50.Qf4 Qb5 51.Qe4+ Kh8 52.Qg4 Kh7 53.Kh3 Qxb2 54.Qe4+ Kh8 55.Qxc4 Qc2 56.e4 Kh7 57.g3 Qd1 58.Kg2 Qd2+ 59.Kf3 Qc2 60.Qd4 Ne6 61.Qe3 Ng7 62.e5 Qf5+ 63.Kg2 Ne6 64.Qe2 Kg6 65.g4 Nf4+ 66.Kf3 Qxg4+ 2. + / - (1.01): 33...h5 34.Rg3 Qc8 35.Qc2 Nf8 36.Qd2 Nh7 37.Rd6 Rd7 38.Qd4 Rxd6 39.Qxe5+ Rf6 40.Rg5 Qb7 41.Rxh5 Qf7 42.Qxd5 Rf1+ 43.Kh2 Rf2 44.Qd8+ Kg7 45.Rc5 Qg6 46.Qc7+ Kh6 47.Qg3 Rxb2 48.Rc7 Qxg3+ 49.Kxg3 Nf6 50.Rxc4 Kg6 51.Rc6 Kf5 52.Rxa6 Ne4+ 53.Kh2 Nxc3 54.h5 Nd5 55.h6 Nxe3 56.Kg3 Nf1+ 57.Kf3 Nh2+ 58.Ke3 Ng4+ 59.Kd4 Rd2+ 60.Kc3 Rd7 61.Rb6 Ne3 62.Rc6 Nxg2 63.a6 Nf4 64.Kb4 Ra7 65.Kb5

Dec-14-18		cormier: if <33...Qc8:> click for larger view Analysis by Houdini 4 <34.Rg3 h5> 35.Qc2 Nf8 36.Qd2 Nh7 37.Rd6 Rd7 38.Qd4 Rxd6 39.Qxe5+ Rf6 40.Rg5 Qe6 41.Qd4 Qe4 42.Rxd5 Qxd4 43.exd4 Rh6 44.Rc5 Kg7 45.Rxc4 Re6 46.Rb4 Nf6 47.Rb6 Re2 48.Kf1 Rc2 49.b4 Nd5 50.Rxa6 Ne3+ 51.Kg1 Nxg2 52.Rc6 Nxh4 53.b5 Nf3+ 54.Kf1 Rd2 55.Rc7+ Kf6 + / - (1.16) Depth: 27 dpa 34.Rg3 h5 + / - (0.87 --) Depth: 28 dpa

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