Daniel Stellwagen vs Artur Yusupov (2007)

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Daniel Stellwagen vs Artur Yusupov
NH Chess Tournament (2007), Amsterdam NED, rd 10, Sep-01
Spanish Game: Morphy Defense. Modern Steinitz Defense (C73) · 1-0

ANALYSIS [x]

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Jul-07-17		ChessHigherCat: The two most likely candidates seem to be Nxg7 or Ng4. 26. Nxg7 Rxg7 27. Rf7 Rg8 28. Rxg7 Rxg7 29. Qf7 Be5 30. Qe8+ Rg8 31. Bxe5+ Nxe5 32. Qxe5+ Rg7 and that's as far as I got in my head. Having looked at the game line, my line is better for white in terms of material but h4 looks like a more effective threat than anything available in my line.

Jul-07-17		al wazir: I went with 27. Qf7. It almost works. 18...Rxf3 would have been interesting: 19. Rxd5 Bd6 20. gxf3 Qh4 21. f4 exf4 22. Bc5 Bxc5 23. Qxc5 f3 24. Rg5 Nf4 (threatening 25...Qxg4+ 26. Qxg4 Nh3+) 25. Rg3 Ne2+.

Jul-07-17		newzild: My calculations followed the game line as far as move 30 when I was unsure whether 30.h4 or 30. Qxc7 was best. 30. Qxc7 threatens 31. Bxg7+ Bxg7 32. Qd8+ followed by 33. c7, but Black has a tonne of options for his 30th move.

Jul-07-17		scholes: What happens if 29.. Bd4

Jul-07-17		NBZ: One interesting sideline: after 26. Nxg7 Be5?! the natural 27. Bxe5 Nxe5 does not seem to be quite as clean for White, for example 28. Rxe5 Rxg7 29. Rxe4 and White may be two pawns up but there is still a lot to be done. But 26. Nxg7 Be5 27. Rxe5! wins easily for White.

Jul-07-17		ChessHigherCat: <scholes: What happens if 29.. Bd4> That's not a legal move because the black bishop is on d6. Do you mean what happens if 29...Be5? That's my line above: 29. Qf7 Be5 30. Qe8+ Rg8 31. Bxe5+ Nxe5 32. Qxe5+ Rg7

Jul-07-17		Walter Glattke: 27.Bxg7+ Kxg7 28.Qf7+ Kh8 (Kh6 29.h4) 29.Rh5 Nf8 30.Rg5 Ne6 31,Qxe6 Qc3 32.Qxe4

Jul-07-17		ajk68: In the game line what happens after 31. e3, ?

Jul-07-17		ChessHigherCat: <ajk68: In the game line what happens after 31. e3?> fxe3 threatening mate in two: 32. Qxf1 Nxf1 33. Rxf1#

Jul-07-17		Ariogermano: Difficult !

Jul-07-17		ajk68: That should have been 31...e3 (black's move, not white's). Sorry. <ChessHigherCat> I think your line is a move earlier (30)? By move 31, the bishop obstructs the attack. I finally have access to a computer. Stockfish 7 says that e3 is the most tenacious defense (+2.7 or so for white). 31...Qb5 was a mistake (in an already losing position). What's interesting is playing the 31...e3 line forward, Stockfish 7 cannot make progress in the Queen+3 pawns vs. Queen+1 pawn endgame.

Jul-07-17		morfishine: <26.Nxg7> is a straight forward demolition tactic leading to a fatal pin *****

Jul-07-17		malt: I got as far as 26.N:g7 R:g7 27.Rf7 Rbg8 28.R:g7 R:g7 29.Qf7 Bf8 as the white rook is stymied by the black Q, The only threat is h4

Jul-07-17		gofer: Okay, I saw the pin, but didn't much like it. I thought that end result was pretty much a Q+R v Q+R end game, after <29 ... Ne5> which white was winning, but not at a canter. click for larger view Instead I played a more convoluted combination to gain an exchange... 26 Nxg7 Rxg7 27 Bxg7!? Kxg7 28 Qf7+ Kh8 (Kh6 g4 ) 29 Rh5 Nf8 30 Qf6+ Kg8 31 Rg5+ Ng6 32 h4 click for larger view Black can trade off queens to reach... 32 ... Qb2 33 Qxb2 Rxb2 34 h5 Kg7 35 hxg6 hxg6 36 a4 click for larger view

Jul-07-17		patzer2: For today's Saturday puzzle (26. ?), instead of the correct Knight move 26. Nxg2! , I went for the tempting 26. Ng5!? My 26. Ng5!? almost works after the expected 26...h6 27. Nf7+ Kh7?? (best is 27...Rb1! 28. g3 Rxf1+ 29. Kxf1 Qd1+ Nh4+ 30. gxh4 Qg4+ = with a draw by perpetual check) 28. Nxh6 gxh6?? (best is 28...Rb1 30. g3 Rxf1+ 31. Kxf1 Qd1+ 32. Kg3 Nh4+ 33. gxh4 Qg4+ = with the draw by perpetual again) 29. Rf7+ Kg8 30. Rxe7+ Kf8 31. Qf7#. However, immediately after 26. Ng4!? Black again has that pesky drawing combination 26...Rb1 27. g3 Rxf1+ 28. Kxf1 Qd1+ 29. Kg3 Nh4+ 30. gxh4 Qg4+ = with a draw by perpetual. Correct of course was the demolition, pinning and deflection combination after <26. Nxg7! Rxg7 27. Rf7 Rg8 28. Rxg7 Rxg7 29. Qf7 Bf8 30. h4 .> However, in the follow-up after <30...Qd3> White had a slightly stronger reply than 31. Bf6 (potentially allowing 31...e3 when White must find the difficult 32. Qd7 to .) Better instead is 31. Bxg7 Bxg7 32. Qxc7 with a decisive passed pawn. P.S.: For an early improvement, instead of 10...d5? allowing the troublesome 11. Qa4 to , Black has a level game after 10...Rb8 11. b3 0-0=.

Jul-07-17		patzer2: Another good early alternative for Black is 8...Bg4 = to as in P Enders vs S Ernst, 2007.

Jul-07-17		patzer2: Correction: Today is Friday -- not Saturday which I was looking forward to.

Jul-07-17		saturn2: I saw the pinning motif but apart from the game continutaion there is also 26..h6 Once the black rook is pinned on g7 black cannot move the h pawn but at move 26 black looses just a pawn.

Jul-07-17		agb2002: The material is identical. Black threatens Rb1 and Rxf1+. The first idea that comes to mind is 26.Nxg7: A) 26... Rxg7 27.Rf7 Rbg8 (27... Bf8 28.Qd7 and Black looks defenseless against Rxf8+) 28.Rxg7 Rxg7 29.Qf7 B(N)e5 30.Qe8+ Rg8 31.Bxe5+ N(B)xe5 32.Qxe5+ Rg7 33.Qd5 with an extra pawn, defending everything and threatening Rd1 followed by Qd8+, Qf6+ and Rd8+. B) 26... Ne5 27.Ne6 wins a piece at least. C) 26... Be5 27.Bxe5 Nxe5 28.Rxe5 Rxg7 29.Rxe4 wins two pawns.

Jul-07-17		agb2002: I subconsciously discarded Bf8 at move 27 and didn't even consider it two moves later. Peculiar inertia.

Jul-07-17		RandomVisitor: What if instead 25...Qc2-Qd3: click for larger view Stockfish_17061704_x64_modern: <33 minutes computer time> +0.45/44 26.Re1 Rxe6 27.Bxg7+ Kxg7 28.Qxe6 Rf8 29.Rxf8 Nxf8 30.Qxe4 Qd2 31.Qg4+ Kf7 32.Qc4+ Kg7 33.Qe2 Qc3 34.g3 Ng6 35.Qe4 Ne5 36.Rd1 Qxc6 37.Rd5 Ng6 38.Qd4+ Kf7 39.Rh5 Qc1+ 40.Kg2 Qc6+ 41.Qd5+ Qxd5+ 42.Rxd5 Ne5 43.f4 Ke6 44.Ra5 Nd7 45.Rxa6 c5 46.Kf3 c4 47.Ke3 Kd5 48.Kd2 Nf6 49.a4 Bb4+ 50.Kd1 Ng4 51.Rb6 Bd6 52.Rb7 Nxh2 53.Ke2 Ng4 +0.35/43 26.Ng5 Nf4 27.Rxf4 Bxf4 28.Nf7+ Rxf7 29.Qxf7 Qxd4 30.Qxf4 Rc8 31.Re1 Kg8 32.Qxe4 Qxe4 33.Rxe4 Rd8 34.Kf1 Rd6 35.Rc4 Kf7 36.h4 Ke6 37.Ke2 Kd5 38.Kd3 h5 39.f3 Rg6 40.g4 Rf6 41.Rd4+ Ke5 42.Re4+ Kd5 43.Ke3 Rxc6 44.Re7 Re6+ 45.Rxe6 Kxe6 46.Kd4 g6 47.a4 a5 48.Ke4 Kd6 49.Kf4 c5 50.Ke4 Ke6 51.gxh5 gxh5 52.f4 Kd6 53.f5

Jul-07-17		morfishine: <saturn2: I saw the pinning motif but apart from the game continuation there is also 26..h6 Once the black rook is pinned on g7 black cannot move the h pawn but at move 26 black looses just a pawn> I'm not so sure about that, but I'm still looking *****

Jul-07-17		RandomVisitor: After 13...Qe8! click for larger view Stockfish_17061704_x64_modern: <2.75 hours computer time> -0.83/43 14.Nd2 f5 15.exf5 Bxf5 16.Ne2 e4 17.Rf1 Bg4 18.Rae1 a5 19.Ng3 Qd7 20.Kh1 Nh4 21.Rg1 Bf6 22.Ref1 Qe6 23.Re1 Rfb8 24.Qc2 a4 25.Rb1 h6 26.Rge1 Be7 27.Rg1 Rf8 28.Rbe1 Bf6 29.Qc3 Qc8 30.Bf4 Be7 31.Be3 Rf7 32.Qc2 Qd7 33.Rgf1 Qe6 34.Rg1 Nf5 35.Nxf5 Qxf5 -0.94/44 14.Ne1 f5 15.exf5 Bxf5 16.Ne2 e4 17.Rd2 Bg4 18.b4 Bh4 19.Nc2 Qd7 20.Rb1 Qe6 21.Rf1 Rf7 22.a3 h6 23.Ng3 Rff8 24.Qa5 Qc8 25.Qa4 Rf6 26.Ne1 Qe8 27.Nc2 Rf7 28.Ne2 Qd7 29.Rb1 Be7 30.Ne1 Rff8 31.h3 Be6 32.Ng3 Bh4 33.Nc2 Rf7 34.Kh2 Qe8 35.Nh5 Bd7 36.Qa5 Qc8 37.a4 Be7

Jul-07-17		bubuli55: 30...Qd2 maybe.

Jul-08-17		patzer2: <RV> Nice find with 13...Qe8! to . Looks like 11. Qa4 isn't at all troubling with the right follow-up. Perhaps this suggests 10. c5?! is a rather dubious novelty and White needs to switch back to the slightly more popular 10. Nc3 as in the drawn game J Meister vs S Halkias, 2007.

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