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< Earlier Kibitzing · PAGE 3 OF 3 ·
Later Kibitzing> |
| Aug-28-09 | | zanshin: Ok, I had no clue here. So I plugged the position into Rybka (top 2 moves only):
click for larger view [-1.64] d=19 29...Bxd4 30.Rxd4 Qc7 31.Qa8 Kg7 32.Qd8 Qxd8 33.Rxd8 Rxa2 34.Rd7 Kf8 35.Rd8 Ke7 36.Rb8 Rb2 37.Rb7 Kf8 (0:32.19) 263927kN [-1.23] d=19 29...Rc3 30.e6 fxe6 31.Rd1 Kf7 32.Kg2 Bxd4 33.Rxd4 Qc6 34.Qxc6 Rxc6 35.a4 Rc2 36.Kf1 Ke7 37.axb5 axb5 38.Rb4 Rc5 39.Ke2 Kd6 40.Rd4 Rd5 41.Re4 Rh5 42.Re3 Rh4 43.Rf3 (0:42.13) 342782kN |
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| Aug-28-09 | | BOSTER: White king without pawn's shield,almost is naked. White bishop on d4 is absolutely pinned.
Black rook on the second rank!
The using the pin we play 29...Rc3 -removing the support for bishop.
In all variations after 30.Rxc3,or 30.Bxa7, or 30.Qa8+ Black is better.
When you read our comments you can see very often the cliche "Let's check",and I can understand this.People are very curious and we want to know the correct answer immediately.
But sometimes I am thinking,what would happend if <chessgames.com> did not give us the such possibility and we could not see the correct answer right now.
1. In this case we could see the game until move "N" on the picture.
When the position is very very complicated it is not enough to see only the position after the move "N", it is very important to see how we get there in order to understand the player's ideas.
2. WE would not be in hurry to send our comments and no doubt check them himself more times even playing "blind".
3. It would be more interesting to learn the opinion in different comments to compare it with own answer.
Of course, here as usual ,pros and cons.
Maybe this has a lot of technical problem. (to open the game after "for a while"). |
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| Aug-28-09 | | vanytchouck: The easiest friday puzzle i've ever seen.
Once you see the pin of the Bd4, the following is a piece of cake. And as my first target was the pawn h3 ... |
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| Aug-28-09 | | MaczynskiPratten: Interesting that Rybka reckons the spectacular game move is inferior to the simple bishop swap. After 29..Rc3, 30 e6 is subtly stronger than it first looks. I thought "doesn't it just postpone Black's win by 1 move?". But after 30..fxe6 the Queen's diagonal to h3 is blocked so now White can play Rd2 or Rd1 safely. White also has the powerful-looking 31 Qe5, but I think Black can take the Rook and risk the check; Rxd3 32 Qh8+ Kf7 and I think the Black King eventually escapes the checks via d8/c7 or d6/c6 (or by 33 Qf6+ Ke8 34 Qh8+ Ke7 35 Qf6+ Kd6 36 Qf8+ Qe7!) The pin on the White Bishop is key in all these lines. I assume that's why Rybka prefers 31 Rd1. |
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| Aug-28-09 | | Frito: This took me five seconds, and I thought, " wow, I just solved a Friday instantly."
I went to check, and only then did i notice "Black to Play".. Score one for not reading the rules.. |
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| Aug-28-09 | | jheiner: 29...Black to play.
Material even. Black B is loose. Black pawn on a2 is hanging. White has discovered threats on the d file if the B moves and the b1-h7 diagonal if the R moves. White has Qa8+. And if later Kg7, then e6+ discovered is bad for Black. Candidates: 29...Bxd4
29...Bxd4+ 30. Rxd4 (if 30.Qxd4 Qxd4 31.Rxd4 Rxa2 and Black has a good endgame.) Now both the Q and R are hanging. 31...Rc1+
31.Kf2 Qxh3 and Black has good chances. Up a pawn and can probably force the Q trade and snap off a2 as well.
Also possible is 31...Qa7 pinning the R and if 32.Ke3?? then Re1 wins the Q 31.Kg2
31.Kh2
Perhaps 31...Qe6 where Black has a strong quiet endgame with pressure on the a2-g8 diagonal, an eventual a4 push and a decent endgame. This is a terribly slow evaluation of this position, but I'm doing a quickie today. Let's check the game to see what I missed, because this doesn't feel right. Wow, blew this completely. Great solution. I love how Black "reversed" the double threats White had. It makes sense too that since both sides had symmetric material, it should be simple to create identical threat combinations. The difference here was that White's position was compromised. Will have to read the kibitzing thoroughly. Looks like White could have defended better. Perhaps. |
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| Aug-28-09 | | geniokov: How about 29...Bxd4+ 30.Rxd4 Qxh3!?...Isn´t it strong for Black since he already penetrate White´s fortres? If 30.Qxd4 Qxd4+ 31.Rxd4 Rxa2 was already strong enough for a won endgame... |
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| Aug-28-09 | | remolino: I am late reviewing today's problem and probably my solution is not the right one. Would like to capture on h3 with queen but in a way that disallows counterplay by white, so: 29...Rc3 (rook cannot be captured neither with bishop or rook), but white can play 30. Rd2 then 30... Bxd4 31. Qxd4 Qxh3 with what seems like a powerful attack on the somewhat exposed white king. There is probably something more forcing. Time to check. |
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| Aug-28-09 | | remolino: My line does not work given the perpetual check by the white queen on d8, f6 and g5. But the main line as played wins despite the bishop sacrifize. |
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| Aug-28-09 | | Patriot: <geniokov: How about 29...Bxd4+ 30.Rxd4 Qxh3!?...Isn´t it strong for Black since he already penetrate White´s fortres?> How about 31.Qxc2? |
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| Aug-28-09 | | geniokov: Then 31...Qd3+ as a God saving move!...(huh! actually,i didn´t notice that 31.Qxc2...) |
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| Aug-28-09 | | Patriot: <geniokov: Then 31...Qd3+ as a God saving move!...(huh! actually,i didn´t notice that 31.Qxc2...)> And after 32.Qf2? |
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| Aug-28-09 | | geniokov: <Patriot>...Sorry,i didn´t really notice that 31.Qxc2 even i have a check at d3...i´m retracting my analysis coz it seems drawish with both Queens still on the board...Pardon!...It must be win for Black...not Draw... |
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| Aug-28-09 | | geniokov: After 31.Rxd4 Qa7 is good,pinning Rook! And after 32.Qxc2 then Qxd4+...and so on... |
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| Aug-28-09 | | zanshin: After reading some of the comments, I started to wonder why Rybka favored <29...Bxd4> over <29...Rc3>. So I started analysis at White's move 30. Rybka considered 30.Rd2 (the move played) as so inferior to <30.e6> that analysis was stopped after only 4 plies. (Rybka 3 - top 2 moves only)
click for larger view [-1.21] d=20 30.e6 fxe6 31.Rd1 Kf7 32.Kg2 Bxd4 33.Rxd4 Qc6 34.Qxc6 Rxc6 35.a4 Rc2 36.Kf1 Ke7 37.axb5 axb5 38.Rb4 Rc5 39.Ke2 h6 40.Kf3 Kf6 41.Kg4 h5 (0:13.54) 108175kN [-4.33] d=4 30.Rd2 (0:00.00) 9kN |
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| Aug-28-09 | | muralman: I got this one! I needed to pull the white rook off guarding white's H3 pawn. Black's queen is poised to take off on this. The black rook was the obvious candidate. Moving the rook up a square sets a trap which white avoids by moving it's rook out of place. Just what I wanted. Next thing is to take the H pawn with the queen. I had in mind to save the bishop for a one two punch, but taking the queen advantage straight off seemed prudent. Now all that was left to do is simple run a queen/rook mate pattern. The non chess player, muralman. |
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| Aug-28-09 | | wals: [Event "Cetinje"]
[Site "Cetinje"]
[Date "1991.??.??"]
[Round "6"]
[White "Pajkovic Vladimir"]
[Black "Goran Cabrilo"]
[Result "0-1"]
[ECO "A11"]
[BlackElo "2494"]
[Annotator "Rybka 3 1-cpu (30m)"]
[PlyCount "62"]
A11: English Opening: 1...c6
1. Nf3 d5 2. c4 c6 3. e3 Nf6 (3... Be6 4. Qb3
Qc7 ) 4. Be2 (4. Nc3 e6 ) 4... e6 (4... g6 5. Nc3 ) 5. b3 (5. O-O Bd6
) 5... Bd6 (5... Be7 6. O-O ) 6. O-O (6. Bb2 O-O ) 6... Qe7 (6... e5
7. Ba3 ) 7. Bb2 (7. d4 b6 ) 7... O-O (7... e5 8. cxd5 cxd5 9. Nc3 ) 8.
Nc3 (8. d4 b6 ) 8... Nbd7 (8... b6 9. Rc1 ) 9. Rc1 (9. h3 g6 ) 9... a6
Consolidates b5 (9... e5 10. d4 ) 10. d4 (10. Na4 Rb8 ) 10... Re8 (
10... b5 11. h3 ) 11. Qc2 (11. h3 b6 $11) 11... dxc4 (11... b5 12. h3
12. Bxc4 (12. bxc4 b5 ) 12... c5 (12... b6 13. Bd3 ) 13. d5 (13. Be2 b5
) 13... Ne5 (13... Nb6 14. dxe6 Nxc4 15. exf7+ Qxf7 (15... Kxf7 16.
bxc4 Kg8 17. Rcd1 ) 16. bxc4 Qxc4 ) 14. Ne4 (14. Nxe5 must
definitely be considered Bxe5 15. f4 ) 14... Nxf3+ 15. gxf3 Nxe4 16.
fxe4 b5 ♗lack threatens to win material: b5xc4 17. e5 White threatens to
win material: e5xd6 Bb8 (17... Qg5+ 18. Kh1 Bf8 19. Bd3 exd5 20. Bxh7+ Kh8 21.
f4 ) 18. Be2 (18. Bd3 exd5 19. Qxc5 Bxe5 20. Qxe7 Rxe7 21. Bxe5 Rxe5 )
18... Bb7 19. Bf3 Bxd5 (19... Qg5+ 20. Kh1 Bxe5 21. Bxe5 Qxe5 ) 20.
Bxd5 exd5 21. f4 (21. Qxc5 is worthy of consideration Qd7 22. h3 )
21... Ba7 (21... c4 22. Bd4 ) 22. Rf3 (22. Qg2 d4 ) 22... d4 (22... c4
23. Rg3 ) 23. exd4 (23. Rh3 g6 24. exd4 cxd4 ) 23... cxd4 24. Qg2 (24.
Qe4 Rad8 ) 24... Rac8 (24... f6 25. Re1 ) 25. Rxc8 Rxc8 26. Rd3 (26. Rg3
g6 27. Kf1 Qc7 ) 26... Qd7 (26... Qh4 27. Qg3 Qh5 28. Qg2 ) 27. h3 g6
28. Qe4 (28. Qg4 Qd8 29. Qd1 Qh4 ) 28... Rc2 (28... Qc7 29. Qe2 ) 29.
Bxd4 Rc3 Decoy: c3 30. Rd2 ?? Blunder strolling merrily down the path to
disaster (30. Rxc3 Qxd4+ Double attack (30... Qxd4+ Decoy)) 30...
Qxh3 31. Bxa7 Qg3+ (31... Qg3+ 32. Kf1 Rc1+ 33. Rd1 Rxd1+ 34. Ke2 Re1+ 35.
Kd2 Rxe4 36. b4 Qxf4+ 37. Kc3 Qf3+ 38. Be3 Qxe3+ 39. Kc2 Rc4+ 40. Kb2 Qc1+ 41.
Kb3 Qc3#) 0-1
The above may be of interest to those seeking help. |
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| Aug-28-09 | | wals: 11: Pajkovic Vladimir - Goran Cabrilo, Cetinje
Analysis by Rybka 3 1-cpu: 14 ply 1 min 15
1.  (-1.30): 30.e6 fxe6[] 31.Rd2 Kf7 32.Kg2 Bxd4[] 33.Rxd4 Qc6[] 34.Qxc6 Rxc6[] 35.a4 Rc2+[] 36.Kf3
2.  (-4.54): 30.Rxc3 Qxd4+[] 31.Qxd4[] Bxd4+[] 32.Kf1 Bxc3[] 33.Ke2 Bb2 34.Kf3 f5 35.h4 |
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| Aug-28-09 | | Artar1: Today's puzzle was a good one, and it had several ways for Black to win. After reading the chapter on pins in "Winning Chess," I was able to spot the idea of adding pressure to the bishop pin by playing <29...Rc3>. I then saw that <30.Rxc3> loses for White, but the difficult question for me to answer was where to place the White rook because it could not remain on the third rank? Then I spotted <30.Rd2> as the best place for the rook. But unfortunately that meant White's king was now vulnerable to <30...Qxh3>, followed by Qg3+. I never really looked at ...Bxd4, and I also saw that Bxa7 lost on the spot, so I went with the queen move. From there I worked out several scenarios before referring to the game: 29...Rc3 30. Rd2 Qxh3 31. Rg2
<31. Qe1 Bxd4+ 32. Rxd4 Rg3+  
click for larger view31. Bxa7 Qg3+ 32. Kf1 Rc1+ >
click for larger view31...Bxd4+ 32. Qxd4 Rc1+ 33. Kf2 Rc2+ 34. Ke1 Rxg2 35. Qd8+ Kg7 36. Qf6+ Kh6 I highly recommend "Winning Chess," which is now out of print but is still available in some locations. |
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| Aug-28-09 | | Artar1: This is really weird! I am now running Fritz 8 at work, and it favors Rybka 3's analysis. Wow! That's really amazing how far off my thinking was compared to a computer's. |
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| Aug-28-09 | | David2009: The position after 29...Rc3 30 e6! fxe6 (30..Qxe6 loses to 31 Rxc3: <Jimfromprovidence>) 31 Rd2 is very interesting. Crafty suggests as best for both sides 31 Rd2 Bxd4+ 32 Rxd4 Qc8 33 Qg2 Kf7 34 Kh2 Qc7
35 Qf2 Kf6 36 Rd8 e5 37 fxe5+ Kxe5 (an amazing position!) 38 Rd2 Ke6+ 39 Kg2 Qc6+ 40 Kh2 Rf3 41 Qh4 Rf1 42 Rxe2+ Kf5 43 Rf2+ Rxf2+ 44 Qxf2+
we reach 
click for larger view
A difficult Queen ending with good drawing chances for White. <wals> using <Rykba 3> proposes 31 ..Kf7 for Black instead of 31... Bxd4+, leading to 32 Kg2 Bxd4 33 Rxd4 Qc6 34 Qxc6 Rxc6 35 a4 Rc2+. 
click for larger view
So far Rykba-3 and Crafty defending as White have agreed in their replies but now Rykba 3 prefers the pawn sacrifice 36 Kf3 whilst Crafty plays 36 Kf1. Crafty playing Black:
http://www.chessvideos.tv/endgame-t... Crafty playing White (with colours reversed - the endgame trainer always assumes Crafty is playing Black) http://www.chessvideos.tv/endgame-t... |
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| Aug-28-09 | | Artar1: It now appears, as others have pointed out, that <29...Rc3 30. e6!> is the better defense for White than playing <30. Rd2>. |
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| Aug-28-09 | | gofer: 29 ... Rc3!
30 Rxc3 Qxd4+ winning
30 Bxa7 Rxd3 winning
30 Re3/Rf3/Rg3 Bxd4+ winning
30 Rd2/Rd1 Bxd4+ 31 Rxd4/Qxd4 Rg3+ 32 Kf2 Qxh3 winning The point being that the black R and Q are not only threatening mate,
but also defending as they are providing an escape square of h6 for the king
where perpetual check cannot be made before black starts on its mating sequence. which would be something like as follows...
35 ... Qh2+ 36 Ke1/Kf1 Rg1#
Time to check... |
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| Aug-28-09 | | WhiteRook48: no!missed this stupid puzzle again! |
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Aug-31-09
 | | LIFE Master AJ: I basically tried almost every other possible move ... including the Q-sack on d4 ... before stumbling across the right move. This was one of those problems I solved mostly by perspiration ... not inspiration! |
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< Earlier Kibitzing · PAGE 3 OF 3 ·
Later Kibitzing> |
Kibitzing
sac: 30...Qxh3