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| Feb-25-05 | | patzer2: http://www.chessdryad.com/articles/... "Konstantin Aseev born 20th October 1960 died on 22nd August 2004 at the age of 43 after a long illness. Aseev hadn't played since October last year and was a coach to Andrei Kharlov and Maia Chiburdanidze. He became an IM and then a GM in the early 1990s. He had a rating high of 2591 in 2001-2. He made significant contributions to theory in the Rauzer Attack and Queen Indian Defence. Alex Yermolinsky shares his memories of his fellow Grandmaster, who he first met in 1983, after Aseev moved to Leningrad after growing up in a small town on the Volga. "Konstantin was friendly but reserved. One of those rare people who think of others more than themselves. I still remember our game from the 1983 Leningrad Absolute Championship where we played in the last round and a win gave either of us the title. After a tough battle it finally ended in a victory for me. The first to congratulate me was Konstantin who gave me a big bear hug and said how well I had played." |
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| Feb-25-05 | | patzer2: After his resignation, I'm sure Aseev gave Kiriakov a hardy congratulations on playing the winning deflection combination beginning with 25. Nxc7!! (today's daily puzzle solution). However, in post game analysis, I would think that both players observed 27. Qxh6! wins quicker and with fewer complications than the pretty deflection (decoy) move 27 Bh7+! To illustrate, an analysis with Fritz 8 follows: <25.♘xc7!! ♕xc7> declining the offer is futile [25...Bg6 26.Qe6+; 25...Bf7 26.Ne6 Re8 27.Nxg7 Rxe1+ 28.Rxe1 Kxg7; 25...Bd7 26.Ne6 Re8 27.Nxg7] <26.♕e6+ ♕f7 27.♗h7+!> this decoy move is effective but more efficient is 27.♕xh6! ♕g7 28.♕e6+ ♗f7
[28...Qf7 29.Bh7+ Kh8 (29...Kg7 30.Qh6+ Kh8 31.Bg6+ Kg8 32.Qh8#) 30.Bg6+ Kg7 31.Bxf7 Bxf7 32.Qh6+ Kg8 33.Qh8#] 29.♕xd6 ♖d8
[29...Na5 30.Rh7 Qxh7 31.Bxh7+ Kg7 32.Bd3  ]
30.♕xc6 ♕xd4 31.♗h7+ ♔f8 32.♕h6+ ♕g7
[32...Ke8 33.Bf5 Qe5 (33...Qxc4 34.Re1+) 34.Qxg5 Rd6 (34...Qd4 35.Re1+ Kf8 36.Qe7+ Kg7 37.Rh1 Kg8 38.Be6 Bxe6 39.Qxe6+ Kg7 40.Rh5) 35.Bd7+] 33.♕xb6 ♖e8 34.♕xa6 |
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| Feb-25-05 | | patzer2: <maxundmoritz: After 26...Qf7, 27.Qxh6 Qg7 28.Qe6+ Bf7 29.Qxd6 is almost forced and looks like an interesting alternative.> Sorry for not giving you credit for first posting the idea. Not only is it an interesting alternative, it is (in my opinion) the better alternative (especially over the board). |
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| Feb-25-05 | | patzer2: <jahhaj: <your brilliance> I think Black just ends up two pawns down, 26 Ne6 Bxe6 27 Qxe6+ followed by 28 Qxh6> It's far worse than that for Black: Analysis by Fritz 8 (@ 17 depth):
1. (7.28): 27...Rf7 28.Qe8+ Rf8 29.Qxc6 Qxd4 30.Bf5 Qg7 31.Re1 2. (13.81): 27...Qf7 28.Qxh6
3. (#3): 27...Kh8 28.Rxh6+ Qxh6 29.Qxh6+ Kg8 30.Qh7# |
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| Feb-25-05 | | WillC21: <patzer2> I have noticed you have used chesslab.com for some position analysis in the past. What is the strength of that chess engine and why did you choose it in the past? Just curious. Thanks. |
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| Feb-25-05 | | patzer2: <WillC21> At the time, I didn't have Fritz 8. I really can't judge the chesslab.com computer's strength under controlled situations, since I can't force it to go beyond its "long analysis" offered on the internet. However, while it gave some sound analysis, it sometimes gave very disappointing results (i.e. missing mate in four etc.). So I bought both CM 9000 and Fritz 8. Fritzs 8 has turned out to be the most user-friendly (and in my opinion the strongest) for analysis. |
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| Feb-25-05 | | kevin86: Oh,when the pawns come marching in...
White finds every way to gain these little monsters every chance he gets-to black,they were expendable. Look who won! |
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| Feb-25-05 | | Bobsterman3000: This is the most entertaining game I've seen in a while... |
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| Feb-25-05 | | MatrixManNe0: Saw this in a jiffy. Nxc7 pulls the queen away and takes advantage of the weak h-file. After the exchange white, IMO, has a clear advantage (2 passers and black is the proud owner of a weak king/queenside). His best bet might have been to transpose to a losing endgame, but to stay in the middlegame is autrocious! The h-file would have been disastrous! In my chess book about intuitive sacrifices, one does not need to calculate but about five moves ahead to justify his sacrifice, especially in an unclear position. |
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| Feb-25-05 | | maxundmoritz: <patzer2> No problem. I do enjoy these puzzles most that have a few interesting alternatives. Your analysis here and in many other puzzles is very helpful to me. Thanks. |
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| Dec-02-17 | | diagonalley: most unusual... the first move is clearly tempting but the follow-up is a bit murky... OTB i think it would be a leap of faith |
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| Dec-02-17 | | bcokugras: OTB ? |
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| Dec-02-17 | | SpamIAm: Over the board. |
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| Dec-02-17 | | newzild: I found today's puzzle to be very easy, as 25. Nxc7 is practically forced in the sense that other moves drop the pawn on d5. My analysis followed the game line with 27. Bxh7+. As pointed out by <Patzer2> the simple 27. Qxh6 may be better. |
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| Dec-02-17 | | mel gibson: Too many lines - too difficult for me.
The computer is agreeing only with the first move of the puzzle: 25. Nxc7 (25. Nxc7
(♘b5xc7 ♗e8-g6 ♕e1-e6+ ♔g8-h7 ♗d3xg6+ ♕g7xg6+ ♕e6xg6+ ♔h7xg6 ♖h1-e1 ♔g6-f7
♘c7xa6 ♖f8-d8 ♔b1-c2 ♘c6xd4+ ♔c2-c3 ♘d4-c6 ♘a6-b4 ♘c6xb4 a3xb4 ♖d8-h8
♖e1-h1 ♔f7-e6 ♔c3-d4 ♔e6-d7 ♖h1-a1 ♔d7-e6 ♖a1-e1+ ♔e6-d7 ♔d4-d5 h6-h5
♖e1-a1) +2.49/21 248)
score for white +2.49 depth 22. |
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| Dec-02-17 | | morfishine: A move-order problem, start with <25.Nxc7> threatening double-attack on <e8>. After 25...Qxc7 (though not forced) <26.Qe6+> finishing with <27.Qxh6> and Black is kaput ***** |
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| Dec-02-17 | | malt: Had
25.N:c7 Q:c7 26.Qe6+ Qf7 27.Q:h6 Qg7
28.Bh7+ Kf7 29.Q:d6 (with the threat of 30.Be4) 29...Qf6 (29...Rh8 30.Bg6+)
30.Qc7+ Ne7 31.Be4 threatening d5
missed 27.Bh7+ |
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| Dec-02-17 | | gofer: <25 Nxc7 ...>
The knight is immune
25 ... Qxc7?
26 Qe6+ Qf7 (anything else loses quickly)
27 Qxh6 Qg7
28 Qe6+!!! ...
This is a critical <ZwischenZug>. 28 ... Qf7 29 Bh7+ winning the queen
28 ... Rf7 29 Qxe8+ Rf8/Qf8 30 Qxc6 +-
28 ... Bf7
29 Qxd6 +-
Black's position is in a mess. Rh7 is coming next winning the queen and entering
into a won Q v R+B endgame.
<25 ... Bg6>
<26 Qe6+ Bf7>
<27 Qxd6 +->
~~~
<melgibson>: I found <25 ... Bg6>, but missed <26 ... Kh7> which is obvious in
hindsight. <25 ... Qxc7> was a blunder by black. |
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| Dec-02-17 | | patzer2: As a US college football fan, I've seen many TV commercials between plays and time outs. One recent series of commercials for Farmers Insurance features stories about unusual insurance losses and their trademark advertising slogan "We know a thing or two because we've seen a thing or two." Thanks to thoughtful and challenging posters like <morfishine>, I've learned a thing or two about the Chess tactics terms "deflection and overloading." With regard to today's Saturday puzzle solution 25. Nxf7!!, which I first analyzed when it was a problem here 12 years ago, I now realize "deflection" isn't the best classification for this winning move. Various definitions of the term deflection indicate a "deflection" lures, forces or distracts a piece from the defense of an important piece or square. After analyzing the combination again today, I realize 25. Nxc7!! doesn't force the Queen to abandon the defense of the Kingside and capture the poisoned piece Knight. Indeed, Black's best move according to the computer is to leave the Queen in place and not capture the Knight at all. According to Stockfish 8, Black's strongest reply to 25. Nxc7!! is not the Queen's capture of the Knight with 25...Qxc7 allowing 26. Qe6+ +- (+7.80 @ 39 ply). Instead, Black's toughest defense is to leave the Queen in place and play 25...Bg6 26. Qe6+ Kh7 27. Bxg6+ Qxg6+ 28. Qxg6+ Kxg6 29. Nxa6 +- (+3.06 @ 34 ply) when White will emerge one or two pawns up in a minor piece middle game. White still wins after 25. Nxc7!! Bg6 26. Qe6+ +-, but not so quick and easy as after 25. Nxc7!! Qxc7 26. Qe6+ +-. Reassessing the situation just before the winning move 25. Nxc7!! the primary feature of the position is the overloaded Black Queen on g7, which is over worked in attempting to guard the pawns on c7 and h6. The tactical shot 25. Nxc7!! exploits the overloaded Queen with the decisive threat of 26. Qe6+ +-. So, I'm reclassifying 25. Nxc7!! +- as an overloading tactic, exploiting the overworked Queen. P.S.: Black's decisive mistake was 24...a6? allowing 25. Nxc7!! +-. Instead, 24...Nxd4 25. Nxd4 Qxd4 26. Qe6+ Bf7 = (0.00 @ 39 ply, Stockfish 8) holds it level. |
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| Dec-02-17 | | morfishine: <patzer2> Nice post exploring an alternate move (other than the Black Queen capture) as well as the earlier improvement. Clearly, Black was playing a bit sloppy since his 'chaser' 24...a6 forced the White Knight into a winning capture 25.Nxc7! Thanks for the mention
***** |
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| Dec-02-17 | | Whitehat1963: Why not 27. Qxh6? |
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| Dec-02-17 | | agb2002: The material is identical.
Black threatens axb5.
The black queen protects h6. This suggests 25.Nxc7 (25.Qe6+ Bf7 with the double threat Bxe6 and axb5): A) 25... Qxc7 26.Qe6+
A.1) 26... Bf7 27.Qxh6 Be6 (27... Be8 28.Qh8+ Kf7 29.Rh7+ Ke6 30.d5#) 28.Qh8+ Kf7 29.Qh7+ Ke8 30.Qxc7 wins. A.2) 26... Qf7 27.Qxh6 Qg7 28.Qe6+
A.2.a) 28... Qf7 29.Bh7+ Kh8 (29... Kg7 30.Qh6+ Kh8 31.Bh6+ and mate next) 30.Bg6+ wins. A.2.b) 28... Bf7 29.Qxd6
A.2.b.i) 29... Nxd4 30.Rh7 wins decisive material (30... Qxh7 31.Bxh7+ Kxh7 32.Qxd4). A.2.b.ii) 29... Qxd4 30.Bh7+ Kg7 (30... Kh8 31.Qxf8+ Bg8 32.Qxg8#) 31.Qh6+ Kh8 32.Bg6+ Kg8 33.Qh7#. A.2.b.iii) 29... Nd8 30.Qxb6 with four pawns and the better position foir the knight. B) 25... Qxd4 26.Qe6+
B.1) 26... Bf7 27.Bh7+ followed by 28.Qxh6 looks winning. B.2) 26... Rf7 27.Qxe8+ Rf8 (27... Kg7 28.Rxh6 Kxh6 29.Qh8+ Rh7 30.Qf6#) 28.Qg6+ Qg7 29.Rxh6 wins two pawns at least. B.3) 26... Kg7(h8) 27.Qxh6+ and mate next.
C) 25... Nxd4 26.Nxe8 Qd7 27.Qe4 seems to win a piece (27... Ne6 28.Qg6+ Ng7 29.Nf6+). |
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| Dec-02-17 | | varishnakov: I got the continuation played but went with 50.Qe4 instead of 50.g5 |
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| Dec-02-17 | | patzer2: <morfishine> Your welcome and thanks! Congratulations to you and your fellow Florida football fans on your new football coach Dan Mullen. IMO Florida got the best guy possible for the job. I was surprised to see Texas A&M offer FSU coach Jimbo Fischer $7.5 million a year for ten years. I wasn't surprised to see him take the offer. |
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| Dec-03-17 | | morfishine: <patzer2> I have to agree that Dan Mullen is the best Florida could hope for. A strong point for him is he already held an assistant coaching job at Florida from 2005 - 2008 Its odd to have Mullen come over to Florida since he had just signed a 4 year extension with MSU in Feb 2017. I hope this works out, or more accurately, I hope he can handle those Gator boosters. Tough crowd
***** |
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Kibitzing
sac: 25.Nxc7