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Yelena Dembo
Y Dembo 
Photo courtesy of  
Number of games in database: 443
Years covered: 1992 to 2012
Last FIDE rating: 2448
Highest rating achieved in database: 2482

Overall record: +138 -61 =184 (60.1%)*
   * Overall winning percentage = (wins+draws/2) / total games in the database. 60 exhibition games, blitz/rapid, odds games, etc. are excluded from this statistic.

With the White pieces:
 Sicilian (96) 
    B43 B48 B30 B31 B45
 French Defense (38) 
    C05 C07 C03 C11 C17
 French Tarrasch (28) 
    C05 C07 C03 C09 C04
 Sicilian Taimanov (23) 
    B48 B45 B46 B49
 Caro-Kann (19) 
    B12 B16 B13 B17 B18
 Scotch Game (19) 
With the Black pieces:
 Sicilian (92) 
    B31 B22 B30 B67 B65
 King's Indian (64) 
    E92 E62 E63 E97 E75
 Sicilian Richter-Rauser (24) 
    B67 B65 B63 B60 B61
 English (15) 
    A15 A10 A16
 Queen's Pawn Game (8) 
    D02 A45
 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
   Y Dembo vs R Palaj, 1994 1-0
   Y Dembo vs G Mammadova, 2010 1-0
   N Castaneda vs Y Dembo, 2001 0-1
   Y Dembo vs G Szamoskozi, 1999 1-0
   Y Dembo vs E Repkova, 2004 1/2-1/2
   Y Dembo vs Nadezda Stojanovic, 2001 1-0
   Y Dembo vs A Muzychuk, 2011 1-0

NOTABLE TOURNAMENTS: [what is this?]
   European Club Cup (Women) (2011)
   European Individual Championship (Women) (2010)
   European Individual Championship (Women) (2008)
   7th European Individual Championship: Women (2006)
   6th European Individual Women's Championship (2005)
   SportAccord Mind Games (Blindfold, Women) (2011)
   Dresden Olympiad (Women) (2008)
   European Team Championship (Women) (2005)
   Cappelle la Grande (2006)
   European Individual Championship (Women) (2007)
   Chess Olympiad (Women) (2012)
   37th Chess Olympiad: Women (2006)
   European Union Championship (2008)
   10th European Individual Championship (2009)
   Chess Olympiad (Women) (2010)

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

   Y Dembo vs I Krush, 1996
   Y Dembo vs D Driamin, 2000
   Y Dembo vs R Palaj, 1994

   🏆 Women's World Championship Knockout Tournament
   Khurtsidze vs Y Dembo (Nov-12-12) 1-0
   Y Dembo vs Khurtsidze (Nov-11-12) 1/2-1/2
   Y Dembo vs M Aulia (Sep-09-12) 0-1
   B Yildiz vs Y Dembo (Sep-07-12) 1/2-1/2
   Y Dembo vs D Vazquez Maccarini (Sep-06-12) 1-0

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

(born Dec-08-1983, 36 years old) Russia (federation/nationality 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.

Wikipedia article: Yelena Dembo

 page 1 of 18; games 1-25 of 443  PGN Download
Game  ResultMoves YearEvent/LocaleOpening
1. S Farhat vs Y Dembo ½-½441992Wch U10 GirlsB70 Sicilian, Dragon Variation
2. Y Dembo vs A Peterson 0-1271992Wch U10 GirlsB16 Caro-Kann, Bronstein-Larsen Variation
3. Y Dembo vs O Avraam 1-0571993Ch-Israel(men), 1/8C80 Ruy Lopez, Open
4. J B Rasmussen vs Y Dembo  0-1451994EU-ch U12 Disney GirlsB10 Caro-Kann
5. Y Dembo vs R Palaj 1-0271994Ch-Israel(men), 1/4B93 Sicilian, Najdorf, 6.f4
6. Wang Yu vs Y Dembo  1-0331996Wch U14 GirlsB40 Sicilian
7. C Moshina vs Y Dembo  1-0291996Wch U14 GirlsB81 Sicilian, Scheveningen, Keres Attack
8. Y Dembo vs I Krush 1-0301996Wch U14 Disney GirlsB89 Sicilian
9. Y Dembo vs N Resika  ½-½201998FSIMA DecC30 King's Gambit Declined
10. Y Dembo vs J Bergre  ½-½201999Budapest First Saturday ELO04B09 Pirc, Austrian Attack
11. D Fliszar vs Y Dembo  0-1401999Budapest First Saturday ELO04A15 English
12. Y Dembo vs V Vass  ½-½641999Budapest First Saturday ELO04C36 King's Gambit Accepted, Abbazia Defense
13. W Langer vs Y Dembo  0-1551999Budapest First Saturday ELO04A05 Reti Opening
14. Y Dembo vs G Szamoskozi 1-0441999Budapest First Saturday ELO04C38 King's Gambit Accepted
15. G Lakat vs Y Dembo  0-1401999Budapest First Saturday ELO04B83 Sicilian
16. Y Dembo vs L Dekany  ½-½261999Budapest First Saturday ELO04B57 Sicilian
17. Y Dembo vs R Csolig 1-0541999Budapest First Saturday ELO04B45 Sicilian, Taimanov
18. M Cleven vs Y Dembo 0-1281999Budapest First Saturday ELO04A04 Reti Opening
19. Y Dembo vs F Jansen 1-0161999Budapest First Saturday ELO04B28 Sicilian, O'Kelly Variation
20. Y Dembo vs D Driamin 1-0422000First Saturday IM sectionC05 French, Tarrasch
21. A Gara vs Y Dembo  ½-½622000t-EuCh U18 GirlsB56 Sicilian
22. Y Dembo vs A Srebrnic  1-0632000t-EuCh U18 GirlsC42 Petrov Defense
23. L Drljevic vs Y Dembo  1-0362000t-EuCh U18 GirlsA07 King's Indian Attack
24. Y Dembo vs A Pahor  1-0332000t-EuCh U18 GirlsB43 Sicilian, Kan, 5.Nc3
25. C Moshina vs Y Dembo  0-1342000t-EuCh U18 GirlsB63 Sicilian, Richter-Rauzer Attack
 page 1 of 18; games 1-25 of 443  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-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 highest rateds, so not "extremely low-rated opponents". Another inaccuracy on your part.> Zygalski, it's called'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 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:

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, 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 staff & an International Master closed her account. Yelena can no longer play on that site. Clearly I was wrong!

Premium Chessgames Member
  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

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 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 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 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, 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 account and as I keep saying, <engine match rate statistics were used by volunteers as a starting point to suggest possible engine users for staff to investigate. It is not known what methods use to determine if there is overwhelming evidence that a member has consulted an engine in their games. 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 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: Congratulations on a fine show!
Premium Chessgames Member
  brankat: Happy Birthday Yelena!
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!

Premium Chessgames Member
  Stonehenge: Happy Birthday :)
Premium Chessgames Member
  whiteshark: Happy Birthday <Yelena>. Hope you have a great Day!
Premium Chessgames Member
  brankat: Best wishes for Your Birthday!
Premium Chessgames Member
  Yelena Dembo: Thank you, guys! :) Best wishes!
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'
Dec-08-14  waustad: Happy b'day!
Premium Chessgames Member
  thegoodanarchist: Nice photo of Yelena - she looks a little like Mayim Bialik from the Big Bang Theory
Premium Chessgames Member
  ketchuplover: She is a trainer at
Premium Chessgames Member
  ketchuplover: I won 2 hours of training with her but decided to pass it on to someone else at chessrex
Premium Chessgames Member
  ketchuplover: chessrex appears infected for me at least in firefox browser
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