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Later Kibitzing> |
Jul-02-11
 | | Jimfromprovidence: I got the continuation first posted by <Phony Benoni> 19.Bxc7 Qxc7 20.Re8+ Bxe8 21.Rxe8+ Kh7 22.Rxh8+ Kxh8 23.Qf8+ Kh7 24.Bd3+ g6 25.Nf5 and the reply 25…Qe5 as posted by <fightclub>.
click for larger view
There really is no mate threat at this point because white has Bf1 if needed. The real threat is black’s 26…Qf6!, so a move like 26 h3?? extinguishes white’s attack. Position after 26 h3 Qf6.
click for larger viewWhite must play 26 Qxf7+ instead to maximize his advantage. |
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| Jul-02-11 | | Marmot PFL: Material is even, black has evidently played 18...d5, expecting white to trade on c7 then retreat Bc4, easing black's game. Instead though white has 19 Bxc7 Qxc7 20 Re8+ Bxe8 21 Rxe8+ Kh7 22 Bd3+ g6 23 Rxh8+ Kxh8 24 Qf8+ Kh7. Here I missed 25 Nf5, but black is clearly in big trouble. maybe the lesser evil was 14...0-0, giving up 2 pieces for the rook. |
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| Jul-02-11 | | PinnedPiece: Sat Time goal: 7:30 min.
Noted weak back rank, and WQ in firing position. At four minutes I had a long combination beginning with Bxc7. If queen takes, then I can get to the back rank with white queen as follows:
19...Qxc7
20.Re8+ Bxe8
21.Rxe8 Kh7
22. Rxh8 kxh8
23.Qf8+ and after Kh7 I figured that would give me enough lieverage to finish him off with my LSB moving to d3. I also figured there would be wrinkles...but after another two minutes (6 minutes total) I thought this was as good as anything I could see. The black queen has to take back. I had a minute and a half to spare.....
So following the game everything is good until 22.Bd3+.....do I lose if I don't play this sequence? 22.Rxh8 or 22.Bd3+....does move order matter?
Until someone says otherwise (I will check other kibitzing), I will count this as... Result: Success!!!! |
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Jul-02-11
 | | johnlspouge: Saturday (Very Difficult)
Leonhardt vs Tarrasch, 1910 (19.?) White to play and win.
Material: Even. The Black Kg8 has 1 legal move, h7. White has a battery Re3 and Re1 on the open e-file with the invasion point e8, which burdens both Qd8 and Bd7 with its defense. Black threatens 19…dxc4 and 19…Bxf4. Because Bc7 and Bf4 face each other, the Black Qd8 is in fact overburdened, suggesting the candidate 19.Bxc7. White should also improve the position of Qa3, which is presently out of play, strongly suggesting the following sequence, to exploit the invasion point f8 for Qa3. Candidates (19.): Bxc7
19.Bxc7 Qxc7 [else, drop material]
20.Re8+
(1) Black can accept the sacrifice
20...Bxe8 21.Rxe8+ Kh7 22.Rxh8+ Kxh8 23.Qf8+ Kh7 24.Bd3+ (1.1) 21…g6 22.Nf5 (threatening 23.Qxg7#)
(1.1.1) 22…Qe5 [gxf5 Bxf5#] 23.Qxf7+ Kh8 24.Qf8+ Kh7 25.Qxh6+ Kg8 26.Qxg6+ Here, and in some of the following lines, White has the initiative and B+3P for R. He denies the Black K the escape square e8 because of the K and R fork Qxc6+, and he has the resource Bd3-f1 to prevent a back-rank mate Qe8#. With <Patriot>, I prefer not to calculate beyond a won position. (1.1.2) 22…f6 23.Qxh6+ Kg8 24.Qxg6+ Kf8 [Kh8 25.Qf6+ Kg8 26.Nh6#] 25.Qxf6+, again with the initiative and B+3P for R.
(1.2) 21…f5 23.Nxf5 (threatening 24.Nxg7#]
There is no effective defense.
(2) Black can decline the sacrifice, but only with a losing disadvantage. 20…Kh7 21.Rxh8+ Kxh8 22.Qf8+ Kh7 23.Bd3+ f5 24.Nxf5
Black is down a P without compensation and facing a mating attack. |
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Jul-02-11
 | | Once: <Jim> I think white needs to play the moderately unusual queen reloader with 26. Qxf7+ Kh8 27. Qf8+ Kh7 28. Qxh6+ Kg8 29. Qxg6+ (fritz also likes 29. h4) 29...Kf8 30. Qxc6
click for larger viewI don't see an immediate mate, but that's an awful lot of "all you can eat" prawns that white has just tucked into. |
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| Jul-02-11 | | morfishine: <Jimfromprovidence> & <Once> Super job running that out guys; <g6> does prolong the game though in the end, black appears losing. <Once> Thats a position to run even further out after 30.Qxc6 <30...Nb6> looks best for black [to at least try to activate his rook by first protecting it]...I wonder if black's rook gets loose, is there a miracle draw in there somewhere? |
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| Jul-02-11 | | LIFE Master AJ: Somebody sent me an e-mail, they wanted to see the win after 28.h4!! - appraently they do not have access to an engine, they are using a computer in a public library. [ (28.h4!! Qe1+;
Black has nothing better.
(28...Nb6; 29.Qxh6+ Kg8;
30.Qxg6+ Kf8; 31.f4! Qe1+;
32.Kh2 Nd7;
The machine wants to give away
the BQ here with ...Qe7; most
humans would resign before
doing something like this.
33.h5  ,
White can just run his RP in.
*** *** *** *** *** ***
The Knight on f5 is completely
untouchable:
28...gxf5??; 29.Bxf5+ Qxf5;
30.Qxf5+ Kg8; 31.h5 )
29.Kh2 Qe5+; 30.g3 Rb8;
31.h5! Ne7;
Or Black can give up the ♕ ...
32.Qf7+ Kh8; 33.Nxe7 Qg7;
34.Nxg6+ Kh7; 35.Qe6 Ra8;
(</= 35...Rxb2?; 36.Ne7+ Kh8;
37.Qc8+ Qf8; 38.Qxf8#)
36.Ne7+ Kh8; 37.Nf5 Qf8;
There aren't any "saves" here for Black.
(37...Qc7; 38.Qf6+ Kg8; 39.Nxh6#)
38.Qe5+ Kg8; 39.Ne7+, " "
and Black is forced to give up his Queen,
most humans would resign here. ) ] |
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| Jul-02-11 | | LIFE Master AJ: <<<patzer2> "P.S.:> While I suspect some of our stronger members below expert level saw much or all of this, I think difficult positions like this, requiring visualization well more than six or more moves ahead, provide an insight into what distinguishes masters and experts from most tournament or club players.">This is probably true.
The beautiful thing about this site is that you get to practice. I have been coming here everyday for YEARS ... and I think it is slowly getting easier to visualize positions in advance: like anything else, PRACTICE MAKES PERFECT!!! Thanks CG ... and the staff!!!!!!!!!!!!!!!!!! |
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| Jul-02-11 | | rossvassilev: now this one was too easy...even I figured it out. |
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| Jul-02-11 | | Patriot: I gave myself 10 minutes to solve this and spent all of it looking at the crazy 19.Nxc6 until I noticed it gets refuted: 19...Bxc6 20.Bxd5 Qxd5 (not 20...Bxd5 21.Re8+, etc.). Then about 2 or 3 minutes past the time control, I decided on 19.Bxc7. This is not a good way to analyze! |
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| Jul-02-11 | | CHESSTTCAMPS: Material is even, but white is fully mobilized and black is not. The observation that two black rooks sit on their initial squares is suffcient to summarize the white advantage in this position. Black threatens 19... dxc4, but it's two late - the doubled rooks are ready to charge into the black position. Here, the natural continuation wins: 19.Bxc7 Qxc7 20.Re8+! (an exchange sac is low risk with the Ra8 out of play) and now: A) 20... Bxe8 21.Rxe8+ Kh7 22.Rxh8+ Kxh8 23.Qf8+ Kh7 24.Bd3+ g6 25.Nf5 f6 (gf 26.Bf5#) 26.Qxh6+ Kg8 27.Qxg6+ Kf8 28.Qxf6+ Qf7 29.Qh8+ Qg8 30.Qh6+ Kf7 31.Qxc6 wins due to the double threat of 32.Qxa8 and Nh6+. A.1) 25... Qe5 26.Qxf7+ Kh8 27.Qf8+ Kh7 28.Qxh6+ Kg8 29.Qxg6+ Kf8 30.Qxc6 with 4 pawns for the exchange and ongoing attack against the unsheltered king. A.1.1) 29... Kh8 30.Nh6! Qe1+ 31.Bf1 Nd6 32.Qxd6 with an easy win. A.2) 28... Ke8 (Kg8 29.Nh6#) 29.Ng7+ Kd7 30.Bf5#
A.3) 30... Ke8 31.Qxc6+ wins
B) 20... Kh7 21.Rxh8+ Kh8 22.Qf8+ Kh7 23.Bd3+ f5 (g6 24.Qxf7+ Kh1 25.Bxg6 forces mate) 24.Nxf5 wins. Time for review - A.1 can probably be improved. |
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| Jul-02-11 | | CHESSTTCAMPS: Made it harder than necessary. |
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| Jul-02-11 | | hedgeh0g: Got the line up to 22.Bd3+, but missed 22...f5 as a resource, although I don't personally feel it's much of an improvement over 22...g6. Otherwise, it wasn't a particularly difficult combination to calculate. |
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| Jul-02-11 | | wals: Rybka 4 x 64
27.Qf5+, +#16. and Black resigned.
The clanger for Black.
18...d5, +5.67. Best, Nb6, +1.14.
and
22...f5, +#18 sort of ruined Black's day, there was no respite. |
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| Jul-02-11 | | fightclub: <abuzic> You are correct. Sorry for the typo. As pointed out by <Jimfromprovidence>, there's no mate threat for white after 25...Qe5.
So <Jimfromprovidence> and <Once>'s line looks like the correct continuation to me. |
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| Jul-02-11 | | jcb: Maybe someone else has already addressed this, but what is white's response if black plays 15 ... c5 instead of 15... Bc7? I don't see how white answers the simultaneous attacks on his queen and the night. |
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| Jul-02-11 | | WhiteRook48: I got the first four moves |
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| Jul-02-11 | | howlwolf: Easy for a Saturday; got it almost immediately. (That doesn't happen a lot.)Looked more at g6 instead of f5 so I didn't consider Bxg6 but feel 100% confident I would have found it. |
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| Jul-02-11 | | Patriot: <jcb> If 15...c5, 16.Bb5 looks like a good candidate. If 16...Bxb5 17.Nxb5 saves the knight and black must deal with 18.Nxd6 or 18.Bxd6. |
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| Jul-03-11 | | Passionate PatZER: Life MASTER -- may I suggest humbly that "PERFECT practise makes Perfect." I have spent a lot of time practising BAD habits so it is important to practise Correctly with good habits. |
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| Jul-03-11 | | Dr. J: <CHESSTTCAMPS: ... 19.Bxc7 Qxc7 20.Re8+! and now: A) 20... Bxe8 21.Rxe8+ Kh7 22.Rxh8+ Kxh8 23.Qf8+ Kh7 24.Bd3+ g6 25.Nf5 f6 26.Qxh6+ Kg8 27.Qxg6+ Kf8 28.Qxf6+ Qf7 29.Qh8+ Qg8 30.Qh6+ Kf7 31.Qxc6 wins due to the double threat of 32.Qxa8 and Nh6+.> Correct, but there is one more point in this line: 31...Ne7 (counterattack) 32 Qb7 with the additional threat of Nxe7, and Black must lose N, R, or Q. |
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Jul-03-11
 | | The Long Diagonal: This was an interesting puzzle. I had a look at it for about five minutes and couldn't figure it out. But yesterday night I had difficulties to sleep since it's so hot here (might be surprising for some people that it actually gets warm up here in Finland occasionally, but it was nearly 30 C yesterday) and instead I began poundering the position. I felt like playing 20.Re8+ because I realized that removing the light-squared bishop would weaken black's defense dramatically, especially the important b1-h7 diagonal. However, for a long time I completely overlooked that the white queen can jump to f8 from a3, playing 23.Qf8+. After I had understood this, it didn't take very long to find 25.Nf5! Must admit that I never even considered 25. .. Qe5, I thought that 25. .. f6 is completely forced. So the variation I calculated in the end and considered it to be optimal play by both sides was 20... Bxe8, 21.Rxe8+ Kh7, 22.Rxh8+ Kxh8, 23.Qf8+ Kh7, 24.Bd3+ g6, 25.Nf5 f6, 26.Qxh6+ Kg8, 27.Qxg6+ Kf8 28.Qxf6+ Qf7. Here I was calculating the consequnces of Qe8+, Qh8+, Qh6+ but couldn't find anything decisive and started already feel sleepy. Finally I decided that Qxc6 must be good enough to win since white has 4 or 5 pawns for an exchange (I was not sure whether there was a white pawn in b2) and the black king is exposed to checks with no more black pawns on K-side, so propably white can just exchange the queens at some point and win the endgame easily by advancing with his K-side pawns. Must say that I was quite surprised and happy to be able to solve this puzzle blindfolded almost 100% correctly (missing a few sideline defenses like 25. .. Qe5) since most Saturdays are too difficult for me even with a board to stare at. I have only tried blindfold chess a few times and never in a serious game but it would be interesting to take part in some sort of an Amber tournament for amateurs and patzers... wonder if there are any. |
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Jul-03-11
| | The Long Diagonal: And yes, I also never seriously thought of .. f5 as an alternative to .. g6. But I don't think that was a serious miss since it doesn't help black at all, I think .. g6 is a better try because black still has some (tiny) hope that white might miss the killer Nf5. |
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| Jul-04-11 | | LIFE Master AJ: <David2009> Did you ever try my quick win against Crafy / EG Trainer? |
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| Feb-07-16 | | TheFocus: This game was awarded the Brilliancy Prize of 300 marks, donated by Baron Albert de Rothschild. See <American Chess Bulletin>, February 1911, pg. 31. |
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Kibitzing
sac: 20.Re8+