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Y Dembo 
Photo courtesy of yelenadembo.com  
Yelena Dembo
Number of games in database: 444
Years covered: 1992 to 2012
Last FIDE rating: 2448
Highest rating achieved in database: 2482
Overall record: +138 -61 =185 (60.0%)*
   * Overall winning percentage = (wins+draws/2) / total games
      Based on games in the database; may be incomplete.
      60 exhibition games, odds games, etc. are excluded from this statistic.

MOST PLAYED OPENINGS
With the White pieces:
 Sicilian (97) 
    B43 B48 B31 B45 B30
 French Defense (38) 
    C05 C03 C07 C11 C10
 French Tarrasch (28) 
    C05 C03 C07 C09 C04
 Sicilian Taimanov (23) 
    B48 B45 B46 B49
 Scotch Game (19) 
    C45
 Caro-Kann (19) 
    B12 B16 B17 B18 B13
With the Black pieces:
 Sicilian (93) 
    B31 B22 B30 B67 B65
 King's Indian (64) 
    E92 E62 E63 E97 E98
 Sicilian Richter-Rauser (24) 
    B67 B65 B63 B60 B61
 English (14) 
    A15 A10 A16
 Queen's Pawn Game (8) 
    A45 D02
 Sicilian Scheveningen (5) 
    B83 B81
Repertoire Explorer

NOTABLE GAMES: [what is this?]
   Y Dembo vs D Driamin, 2000 1-0
   Y Dembo vs I Krush, 1996 1-0
   N Castaneda vs Y Dembo, 2001 0-1
   Y Dembo vs N Stojanovic, 2001 1-0
   Y Dembo vs A Muzychuk, 2011 1-0

NOTABLE TOURNAMENTS: [what is this?]
   6th European Individual Women's Championship (2005)
   Cappelle la Grande (2006)
   7th European Individual Championship: Women (2006)
   37th Chess Olympiad: Women (2006)
   European Individual Championships (Women) (2007)
   European Union Championships (2008)
   European Individual Championship (Women) (2008)
   2008 Women's Olympiad (2008)
   10th European Individual Championship (2009)
   European Individual Championships (Women) (2010)
   Chess Olympiad (Women) (2010)
   Chess Olympiad (Women) (2012)

GAME COLLECTIONS: [what is this?]
   Yelena Dembo's collection - women chess bites:) by Yelena Dembo
   spasskey69's favorite games by spasskey69

GAMES ANNOTATED BY DEMBO: [what is this?]
   Y Dembo vs I Krush, 1996
   Y Dembo vs D Driamin, 2000
   Y Dembo vs R Palaj, 1994

Search Sacrifice Explorer for Yelena Dembo
Search Google for Yelena Dembo
FIDE player card for Yelena Dembo


YELENA DEMBO
(born Dec-08-1983) Russia (citizen of Greece)

[what is this?]
Yelena Dembo was born in Penza, Russia. At only 3 years and 9 months, she played chess in an under-13 tournament and became rated. When she was 7, her family emigrated to Israel, where her parents opened a chess academy. She was Israeli champion among the girls five times, including once in the category under 20 years. She became a WGM in 2001 and Men's IM in 2003.

She is an eight time medalist of World and European Youth and Women Championships, including winning the first place in Girl's Under 20 European Rapid Championship in 2002. She won the Bykova's Memorial (women's WGM event) in December 2004. She won the bronze medal in Women's European Individual Championship in Moldova 2005 and scored 6.5/11 (TPR 2464) at the 12th European Individual Championship (2011), which included a 4/8 (+2 -2 =4) result against her 8 GM opponents in that event. She qualified for the FIDE Knock-Out Women's World Championship (2012), but lost in the first round to Georgian IM Nino Khurtsidze.

She recently made her first men's GM norm in the Hamburg open.

http://yelenadembo.com/

Wikipedia article: Yelena Dembo


 page 1 of 18; games 1-25 of 444  PGN Download
Game  ResultMoves Year Event/LocaleOpening
1. S Farhat vs Y Dembo ½-½44 1992 World Champ under 10B70 Sicilian, Dragon Variation
2. Y Dembo vs A Peterson  0-127 1992 World Championship under 10 GirlsB16 Caro-Kann, Bronstein-Larsen Variation
3. Y Dembo vs O Avraam 1-057 1993 Ch-Israel(men), 1/8C80 Ruy Lopez, Open
4. Y Dembo vs R Palaj 1-027 1994 Ch-Israel(men), 1/4B82 Sicilian, Scheveningen
5. J Rasmussen vs Y Dembo  0-145 1994 EU-ch U12 Disney GirlsB10 Caro-Kann
6. C Moshina vs Y Dembo  1-029 1996 Wch U14 GirlsB81 Sicilian, Scheveningen, Keres Attack
7. Wang Yu vs Y Dembo  1-033 1996 Wch U14 GirlsB40 Sicilian
8. Y Dembo vs I Krush 1-030 1996 Wch U14 Disney GirlsB89 Sicilian
9. Y Dembo vs N Resika  ½-½20 1998 FSIMA DecC30 King's Gambit Declined
10. G Lakat vs Y Dembo  0-140 1999 Budapest First Saturday ELO04, HUNB83 Sicilian
11. Y Dembo vs J Bergre  ½-½20 1999 Budapest First Saturday ELO04, HUNB09 Pirc, Austrian Attack
12. Y Dembo vs F Jansen 1-016 1999 Budapest First Saturday ELO04, HUNB28 Sicilian, O'Kelly Variation
13. Y Dembo vs G Szamoskozi 1-044 1999 Budapest First Saturday ELO04, HUNC38 King's Gambit Accepted
14. M Cleven vs Y Dembo 0-128 1999 Budapest First Saturday ELO04, HUNA04 Reti Opening
15. W Langer vs Y Dembo  0-155 1999 Budapest First Saturday ELO04, HUNA05 Reti Opening
16. Y Dembo vs R Csolig 1-054 1999 Budapest First Saturday ELO04, HUNB45 Sicilian, Taimanov
17. Y Dembo vs V Vass  ½-½64 1999 Budapest First Saturday ELO04, HUNC36 King's Gambit Accepted, Abbazia Defense
18. Y Dembo vs L Dekany  ½-½26 1999 Budapest First Saturday ELO04, HUNB57 Sicilian
19. D Fliszar vs Y Dembo  0-140 1999 Budapest First Saturday ELO04, HUNA15 English
20. A Gara vs Y Dembo  0-140 2000 ch-HUN WomenB65 Sicilian, Richter-Rauzer Attack, 7...Be7 Defense, 9...Nxd4
21. Y Dembo vs A Pahor  1-033 2000 t-EuCh U18 GirlsB43 Sicilian, Kan, 5.Nc3
22. N Lakos vs Y Dembo  ½-½16 2000 ch-HUN WomenB31 Sicilian, Rossolimo Variation
23. Y Dembo vs D Driamin 1-042 2000 First Saturday IM sectionC05 French, Tarrasch
24. Y Dembo vs F Kiss  1-044 2000 ch-HUN WomenB48 Sicilian, Taimanov Variation
25. L Drljevic vs Y Dembo  1-036 2000 t-EuCh U18 GirlsA07 King's Indian Attack
 page 1 of 18; games 1-25 of 444  PGN Download
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2) | Dembo wins | Dembo loses  
 

Kibitzer's Corner
< Earlier Kibitzing  · PAGE 22 OF 22 ·  Later Kibitzing>
Dec-08-10  Zygalski: <bartonlaos>
I didn't cheat any analysis.
I simply auto-analysed her then 20 most recently completed high-quality games which all had 35 or more total moves.

<Xeroxx>
The alleged cheating & the closed Dembo account refer to actions staff took at chess.com in CC games where engine use if forbidden.

You can always analyse the games yourself.
Here's a link to them:

http://www.chess.com/home/game_arch...

Dec-08-10  Nietzowitsch: <dkappe1:

<The real question is, what the heck is she doing playing these patzers?>>

You might well ask!

Dec-08-10  bartonlaos: <Zygalski> You nitwit. Not only were there cherry-picked games for extremely low-rated opponents going all the way back to 2008, but when you realized that we discovered this trick, you tried cheating the analysis by altering our perception of which games were used in the set: <Zygalski Dec 06 "Here are the ratings of the opponents in the last 15 games Yelena played on chess.com...etc.> Tsk, such dishonesty to cover-up a witch hunt. You are certainly not a Chess.com authority, just a nameless troll who fantasizes to be one.

<Xeroxx>

Collyer in charge of the 'cheat-section' for Chess.com has realized the errors in the methods employed against Yelena, and has backed off of the accusation, so none exists. This decision was independent, made without pressure, and decided much later than Chess.com's own decision to retract the accusation.

Dec-18-10  Zygalski: <bartonlaos>
Is it possible for you to post in this thread <without making personal attacks>... I wonder?

Here is the full set of opponent ratings in the 20 Dembo chess.com games:

2797, 2503, 2304, 2377, 2367, 2309, 2371, 2475, 2371, 2528, 2209, 2355, 2238, 2228, 2266, 2216, 2299, 2257, 2198, 2189.

So the lowest in the set was 2189, the highest 2797. The average opponent rating from the set is 2342.85.

These are all top 1 percentile chess.com highest rateds, so not "extremely low-rated opponents". Another inaccuracy on your part.

Finally, again <without personal attacks> if you can manage, please show me an inaccuracy by Dembo in any of these chess.com games where she drops a mere 0.25 or more of a pawn at depth 20. You, or anyone else have yet to provide any such evidence which is surprising, considering even the best GM's regularly drop 0.50 or more in their games.

Here is the link to her chess.com games.

http://www.chess.com/echess/profile...

Simply load any version of a 3000+ Elo rated engine up, preferably on a multi-core modern pc & look for the top 3 or 4 lines & allow the engine to reach depth of 20 & compare to the played moves.

Finally, as I keep saying I and several other <volunteers> auto batch analysed the games & the account was later closed by an International Master who works as chess.com staff. I made it quite clear I was a volunteer & have never claimed to be a member of staff on that site. Please either show me evidence to the contrary or stop trying to troll. :)

Dec-18-10  Zygalski: Here's Yelena's final gift to chess.com.
Her last win, which <didn't> form part of the analysis sent to staff. The opponent was rated 2608, so not really patzer material!

http://www.chess.com/echess/game.ht...

[Event "Let's Play!"]
[Site "Chess.com"]
[Date "2010.02.01"]
[White "BoboXXL"]
[Black "YelenaDembo"]
[Result "0-1"]
[WhiteElo "2608"]
[BlackElo "2541"]
[TimeControl "1 in 10 days"]
[Termination "YelenaDembo won by resignation"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Bd3 h6 9.Ne4 Nd5 10.O-O Nf4 11.Be2 Be7 12.d3 Rb8 13.Re1 O-O 14.a3 c5 15.Bf3 Qc7 16.b3 Rd8 17.Nec3 Be6 18.Bxf4 exf4 19.Bg4 Bxg4 20.Qxg4 Bf6 21.Ra2 c4 22.Ne4 Be5 23.b4 cxd3 24.cxd3 Nb3 25.Qd1 Nd4 26.Nbd2 a5 27.Nc5 Ra8 28.Nc4 Bf6 29.Ne4 axb4 30.Nxf6+ gxf6 31.Qh5 Re8 32.Rxe8+ Rxe8 33.h3 b3 34.Rb2 Kg7 35.Qd5 Re1+ 36.Kh2 f3+ 37.g3 Qc8 38.Qh5 f5 39.Qh4 Qc5 40.Qf4 Re2 41.Rd2 b2 42.Rxb2 Nc2 43.d4 Qxc4 44.Qxf3 Nxd4 45.Qb7 Re1 46.Rd2 Qf1 47.h4 Qg1+ 48.Kh3 Re4 49.Qxe4 fxe4 0-1

4 x AMD Phenom 2.30 GHz 4GB RAM
Analysis Deep Rybka 3 x64 Hash:640 Time:60s Depth: Max 20 ply

Result for non-database moves:

White: BoboXXL
{ Top 1 Match: 19/39 ( 48.7% )
{ Top 2 Match: 30/39 ( 76.9% )
{ Top 3 Match: 31/39 ( 79.5% )
{ Top 4 Match: 33/39 ( 84.6% )

Black: YelenaDembo
{ Top 1 Match: 36/40 ( 90.0% )
{ Top 2 Match: 39/40 ( 97.5% )
{ Top 3 Match: 40/40 ( 100.0% )
{ Top 4 Match: 40/40 ( 100.0% )

Dec-19-10  bartonlaos: Give it up, Zygalski. You got caught and then tried to cover it up by listing the correct games. It won't work. No one here believes you anymore.

<These are all top 1 percentile chess.com highest rateds, so not "extremely low-rated opponents". Another inaccuracy on your part.> Zygalski, it's called Chess.com's pool of online correspondence players. In that pool any patzer can have a high rating. It also exists for large OTB pools, such as USCF ratings. These ratings have relative strengths that are are slightly different than the FIDE rating. A USCF rating is about 100 points lower than a FIDE rating. And a Chess.com rating is about 100 points lower than a USCF rating. So it doesn't matter whether they are top 1% of a tight chesspool, all that matters is their relative strength. Her opponents were incredibly weak, by hundreds of points, relative to her own FIDE rating and especially considering her tournament experience.

So you've finally understood that. Good. It was a major error, and by doing that you manipulated the downstream interpretation of her results. Guilty before innocent. But instead of apologizing for your wrongdoing, you decide to stop talking about the batch that was analyzed, and instead cherry-pick a brand new game that wasn't analyzed to try to rescue your sunken position. It's not going to work.

That game you listed was played in the Two Knights Defense, an opening that is as familiar to any master as a milk is to a child. Yelena Dembo has probably had that opening mastered for at least 20 years, being a rated chessplayer since she was 3! In this game, Dembo followed Shcherbakov vs. Khismatullin Moscow. 2010.2.7. The results for black were equally devastating.

Top 1: 70%
Top 2: 75%
Top 3: 90%
Top 4: 100%
Houdini depth 20: http://www.freeimagehosting.net/upl...

That's from an entire game in a few hours, over the board, typical of the forcing nature of this opening, and also of Yelena's style. Why you are so exasperated about the fact that Yelena can do about 10-20% better given 2 to 6 days per move, free access to Chessbase, and an interactive digital board with which to practice lines and variations is beyond anyone's comprehension.

It's over, Zygalski. Crusading against Yelena is not doing anyone any good. You keep repeating your lost arguments, rallying against her for a topic that has nothing to do with Chessgames.com, and then chasing into her personal forum to make sure she reads your attacking posts. It's as if you have a personal axe to grind against a premium member. As such, your attempts should be considered as cyberstalking - see rule 4.

Dec-19-10  Zygalski: You're right bartonlaos, I lose.

Yelena's games were referred to chess.com staff & an International Master closed her account. Yelena can no longer play on that site. Clearly I was wrong!

Jan-06-11  dkappe1: <Zygalski> Which IM?

I've been running some tests on games where opponents are mismatched by more than 600 points. I have to go to some other chess sites for that, as I haven't found many on chessgames.com.

The new rybka aquarium scripter makes running these sorts of analyses much easier.

In a small sample of 20 otb games, the average match rate (using the same methodology of the articles) for the higher rated player out beyond move 12 is over 90%.

Small sample. Not conclusive. But interesting enough to run a bigger test.

Heck, I might get a published paper on this illustrating the limits of automated cheat detection.

"There are lies, damned lies, and statistics." and there is a danger when amateurs blindly follow an algorithmic recipe proposed by an expert. "If she floats, she's a witch. If she drowns, she's innocent."

Feb-10-11  croco: @dkappe1: I can hardly imagine that a game between two players with such a rating discrepancy can last 20 moves out of the opening book to be included in your sample. Why do you need such a high rating gap? Are you saying that all the opponents Yelena encountered were below 1900 ELO? Again, the matching rate is not the only factor, you can also count the average total error (and there is a paper comparing world chess champions which describes the method).

Anyway, I think that the site in question withdrew any accusations. Or could not back them up.

Mar-26-11  Lennonfan: User<BARTONLAOS>directed me to this page....and i dont see your point old pal...and i can still only conclude one thing after reading the above posts.,...your OBSESSED with proving that ppl cheat,when all your accusations are baseless and i agree with user<zygalski>'s post..<bartonlaos> <is it possible for you to post on this thread without making personal attacks...i wonder?>...i dont think it is!! Do you spend your entire time devoted to running games through chess engines,finding some moves agree with the players moves,then insinuate they've cheated??? Why dont you post one of your games up over at the cafe,and let some other engine anorak go through one of your games?? Your not gonna do that though are you? I wonder why! Seriously mate,you know nothing about chess just computers.,,.so stick to the computers
Mar-28-11  bartonlaos: <Lennonfan> You've inverted it completely, old chap. The ppl you agreed with were the ones obsessed with cheating.

Here's an excerpt of what I had written:

<"The stronger the opponent, the greater their ability to find good moves, making it harder for you to find the clear winning lines. Conversely, the weaker is your opponent, the easier it is to maintain fidelity. This shows how erroneous it is to take engine-fidelity as any indication of 'cheating' without considering the Chess itself.

"Chess is just so much more complex than the percentages from the Top 3 method can show that each game must be analyzed as a whole, and the evaluations for each candidate need to be considered before anything can be assumed about the player's choices involved. As for analyzing or interpreting what the percentages mean?? Without the proper controls any percentage you get from analyzing those games is arbitrary."

- bartonlaos>

Mar-28-11  Lennonfan: Not interested in your excerpts..no one else is either! Everyone's said their piece regarding you and your opinions on here<BART>....night night...the nurse will be round soon lol
Apr-02-11  Cmb: The cheats on chess.com do not always cheat, so in some cases you might find games with close to 100% of the first choice computer (e.g Houdini, Rybka, Stockfish) moves - and even if the accusations are true I find it much more likely that a titled GM would have such results. I think that since chess.com do not allow for an Arbiter to ajourn games the rules are wrong with reference to paying cheaters, especially if they have a string of non-computer games to support their claims to innocence. This has happened to me on chess.com, my opponent had a history of games with 100% accuracy, then some games played without any obvious computer use.
Apr-03-11  Zygalski: Well I haven't even viewed this page in quite some time.

I see that <Bartonlaos> is still up to his old nonsense, trying to recruit people to post in this thread (which seems to have back-fired badly) whilst arguing that others are obsessed with this issue. LMAO!

International Master David Pruess closed Yelena's chess.com account and as I keep saying, <engine match rate statistics were used by volunteers as a starting point to suggest possible engine users for chess.com staff to investigate. It is not known what methods chess.com use to determine if there is overwhelming evidence that a member has consulted an engine in their games. chess.com refuse to release their own cheat detection methodology.>

Some simple minds on here seem confused by the oft-repeated statement & I can't really understand why.

I personally suspect chess.com use average error analysis, which I think is better than the rather simplistic top 4 match rate methodology & have so stated on several occasions.

I also think they may use a Page Viewer Log in combination with their undiscolsed methods. A PVL could provide valuable circumstantial evidence. For instance, it would show a suspected cheat logging into site, viewing their games, pulling down PGN/FEN then moving in these games. It would record dates & times of all the activity by that user. If a suspect repeatedly pulls down PGN/FEN then moves in complex and/or balanced positions in their games moments later, whilst also matching an engines preferred choices, this would be extremely compelling circumstantial evidence.

Apr-03-11  bartonlaos: Hi <Zygalski>.

I don't have any desire to revisit the dead horse. This guy thought I had accused him of cheating when one of his 40+ move games registered something like 65% 88% 100% on the Top 3 method 20dHou1.5.

I explained to him that this isn't what happened, and directed him to this thread to read more about what the top 3 method represents. He didn't comprehend it though, which is why he gave such a heated response that I had also been accusing Dembo - hence the necessity for me to clarify what it all means.

Apr-03-11  wanabe2000: At the 2011 European Individual Championship (Mixed), behind Judit Polgar's third place performance, the best finish by a woman was Yelena Dembo with 6.5/11 points: http://chess-results.com/tnr45941.a.... Congratulations on a fine show!
Dec-08-11
Premium Chessgames Member
  brankat: Happy Birthday Yelena!
Dec-08-11
Premium Chessgames Member
  whiteshark: Many happy returns of the Day, <Yelena>!
Dec-08-11  wuvmuffin72: Happy Birthday Yelena Dembo!

I hope you write a repertoire book for Black in the Classical Sicilian one day!

Dec-08-11
Premium Chessgames Member
  Stonehenge: Happy Birthday :)
Dec-08-12
Premium Chessgames Member
  whiteshark: Happy Birthday <Yelena>. Hope you have a great Day!
Dec-08-12
Premium Chessgames Member
  brankat: Best wishes for Your Birthday!
Apr-14-13
Premium Chessgames Member
  Yelena Dembo: Thank you, guys! :) Best wishes!
Apr-16-13
Premium Chessgames Member
  HeMateMe: Nice hat, Yelena! Your bio says your first chess tournament took place before you were four years old--do you remember playing chess at that age?
Jun-27-14  independentthinker: I am very impressed with the games on Yelena's website. The first example in her 'wins over grandmasters' is simple chess at its best. Very impressive. Hope she takes all of her training and makes a book for Quality Chess like 'chess lessons'
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