Cheating Analysis

The Bulgarian player Borislav Ivanov was strongly suspected of cheating
at a recent tournament in Croatia.

After pulling off some fantastic wins v 2600 GMs (Ivanov is 2200) he was
reportebly strip searched and they found nothing.

A fellow Bulgarian, FM Lilov 2433 has looked at the games from this tournament
and some tournament games prior to this event played by Ivanov and presents his
findings in this hour long vid.

The evidence is pretty damning. Lilov supplies 90% computer match up's and
gives hints on where computers are at the weakest.

He also shows positions where unhuman like moves a few of which are sore thumbs.
The case against Ivanov is his very poor play and human moves prior to
his massive improvemnt which took place over a matter of a few days.
Also there was one day when live transmission was stopped.
Ivanov then proceeded to produce an awful game and lost.
Normal service was resummed the following day and Ivanov picked up where
he left off hammering GM's.

The link goes to a German article but the vid at the bottom is in English.

http://www.chessbase.de/nachrichten.asp?newsid=13813

The vid ends with a site where you can buy the virtually undetectable kit used to
cheat for as little as 50 Euro Bucks.

This game is one of the masterpieces played by Invanov and is analysed in great
detail by Lilov. 24.Nf5 is a wow!

Can any of the lads on here do their own match up.

Ivanov - GM Bojan Kurajica, Zadar Open 2012

Rb7 looks pretty hot too, as the more I look at it the more it looks like a forced exchange, and would have been part of the plan at move 24 (by who/whatever was doing the thinking)

I'm analysing at fixed depth of 20 ply with Houdini 1.5a x64

Originally posted by greenpawn34
The Bulgarian player Borislav Ivanov was strongly suspected of cheating
at a recent tournament in Croatia.

After pulling off some fantastic wins v 2600 GMs (Ivanov is 2200) he was
reportebly strip searched and they found nothing.

A fellow Bulgarian, FM Lilov 2433 has looked at the games from this tournament
and some tournament games prior to thi ...[text shortened]... b7 Qxb7 29. Qxf6 e3 30. fxe3 fxe3 31. Ne7 Kh7 32. Qf8 h5 33. Qg8 Kh6 34. Qh8 Bh7 35. Be4[/pgn]

Maybe he used psychology for the first time in his career?

Originally posted by greenpawn34
The Bulgarian player Borislav Ivanov was strongly suspected of cheating
at a recent tournament in Croatia.

After pulling off some fantastic wins v 2600 GMs (Ivanov is 2200) he was
reportebly strip searched and they found nothing.

A fellow Bulgarian, FM Lilov 2433 has looked at the games from this tournament
and some tournament games prior to thi ...[text shortened]... b7 Qxb7 29. Qxf6 e3 30. fxe3 fxe3 31. Ne7 Kh7 32. Qf8 h5 33. Qg8 Kh6 34. Qh8 Bh7 35. Be4[/pgn]

wow

Ah,such envious people.It's just that Borislav bought his first chess book and is reaping the fruits.

Originally posted by Zygalski
I'm analysing at fixed depth of 20 ply with Houdini 1.5a x64

How do you set up Houdini 1.5a x 64 to analyze at a fixed depth?

Originally posted by greenpawn34
The evidence is pretty damning. Lilov supplies 90% computer match up's and
gives hints on where computers are at the weakest.

Incredibly interesting.

Note: This is 90% top three mark-up.

I find it interesting that it is not just about percentage match, but also
detailed analysis of in which positions and situations mistakes were made.

For me the first surprising move was 20 Rxa7. I would have played Nc7 (I didn't used the analysis board or any other assistance)..

http://www.chessgames.com/perl/chessgame?gid=1703505

[Event "19th Open A"]
[Site "Zadar"]
[Date "2012.12.17"]
[Round "3.12"]
[White "Borislav Ivanov"]
[Black "Bojan Kurajica"]
[Result "1-0"]
[ECO "E00"]
[WhiteElo "2227"]
[BlackElo "2565"]
[PlyCount "69"]
[Analysis "Houdini 1.5a x64 Hash:640 Time:N/A Fixed Depth:20ply"]

{ Book Moves: }

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 c5 5. Bxb4 cxb4 6. Bg2 0-0 7. Nf3 d6 8. 0-0 Qe7
9. a3 bxa3 10. Rxa3

{ Analyzed: }

10... b6 { h6 35 20 : a6 35 20 : Rd8 36 20 : Nc6 36 20 }

11. Nc3 { Nc3 37 20 : Nh4 33 20 : d5 25 20 : Qd2 22 20 }
11... Bb7 { Bb7 41 20 : a5 42 20 : Rd8 45 20 : Nc6 67 20 }

12. d5 { d5 40 20 : Qd2 26 20 : Re1 23 20 : Qa4 23 20 }
12... e5 { Rc8 39 20 : exd5 46 20 : e5 50 20 : Nbd7 53 20 }

13. Nh4 { Qd2 54 20 : Nh4 49 20 : Qc1 39 20 : b4 36 20 }
13... g6 { Bc8 50 20 : a6 56 20 : g6 57 20 : Qd8 65 20 }

14. Qd2 { Qc1 63 20 : Qd2 59 20 : f4 33 20 : b3 31 20 }
14... Nh5 { Ne8 54 20 : Qd8 58 20 : a5 61 20 : Nfd7 70 20 }

15. Qh6 { Qh6 106 20 : Rfa1 68 20 : Nf3 57 20 : Rc1 52 20 }
15... f5 { Bc8 105 20 : f5 129 20 : Rd8 133 20 : Nd7 156 20 }

16. e4 { Nxf5 198 20 : e4 136 20 : Rfa1 107 20 : Bh3 90 20 }
16... Ng7 { f4 145 20 : Ng7 190 20 : Qg7 217 20 : fxe4 317 20 }

17. exf5 { exf5 166 20 : Rfa1 123 20 : b4 123 20 : Rd1 95 20 }
17... gxf5 { gxf5 207 20 : Nxf5 225 20 : Rxf5 237 20 : g5 517 20 }

18. Nb5 { Nb5 202 20 : g4 146 20 : b4 136 20 : Rfa1 123 20 }
18... Rf6 { Rf6 219 20 : a5 266 20 : Nd7 332 20 : Ne8 363 20 }

19. Qg5 { Qg5 223 20 : Qe3 63 20 : Qd2 53 20 : Qc1 47 20 }
19... Qf7 { Qf7 224 20 : Qf8 268 20 : Kf7 287 20 : Nd7 400 20 }

20. Rxa7 { Rxa7 221 20 : Nxa7 210 20 : Bh3 143 20 : Bf3 107 20 }
20... Rxa7 { h6 225 20 : Rxa7 225 20 : Nd7 739 20 : Qf8 915 20 }

21. Nxa7 { Nxa7 212 20 : Nxf5 -53 20 : c5 -210 20 : Bh3 -250 20 }
21... f4 { h6 206 20 : Kf8 223 20 : e4 251 20 : f4 253 20 }

22. Ra1 { Ra1 245 20 : Re1 173 20 : Rd1 158 20 : Bf3 136 20 }
22... Na6 { Na6 273 20 : Qf8 279 20 : Kf8 316 20 : Nd7 331 20 }

23. Nc6 { Nc6 281 20 : Qg4 209 20 : Nb5 185 20 : Ra3 160 20 }
23... Bc8 { Qf8 273 20 : Bc8 274 20 : fxg3 385 20 : Nc5 418 20 }

24. Nf5 { Nf5 280 20 : gxf4 278 20 : Nd8 204 20 : Nf3 200 20 }
24... Bxf5 { Kf8 280 20 : Kh8 342 20 : Bxf5 354 20 : fxg3 580 20 }

25. Rxa6 { Rxa6 342 20 : gxf4 35 20 : g4 -50 20 : f3 -58 20 }
25... h6 { h6 354 20 : Kf8 515 20 : Qf8 568 20 : h5 641 20 }

26. Qh4 { Qh4 348 20 : Ra8+ 205 20 : Nxe5 -85 20 : Nd8 -122 20 }
26... Bd3 { Bd3 341 20 : Kh7 356 20 : Bc2 388 20 : Ne8 418 20 }

27. Rxb6 { g4 397 20 : Rxb6 342 20 : Ra7 293 20 : b4 283 20 }
27... e4 { Nf5 342 20 : fxg3 481 20 : e4 531 20 : Qh5 556 20 }

28. Rb7 { Rb7 545 20 : Ne5 479 20 : Bf1 253 20 : h3 244 20 }
28... Qxb7 { Qxb7 533 20 : Qf8 945 20 : e3 1012 20 : fxg3 1123 20 }

29. Qxf6 { Qxf6 521 20 : b4 -637 19 : b3 -791 19 : Bxe4 -812 19 }
29... e3 { e3 534 20 : Qf7 559 20 : Kh7 572 20 : Nf5 849 20 }

30. fxe3 { fxe3 556 20 : Bf1 502 20 : Ne7+ 246 20 : Qd8+ 194 20 }
30... fxe3 { Qf7 561 20 : Kh7 603 20 : Qa6 654 20 : Qa8 654 20 }

31. Ne7+ { Ne7+ 1968 20 : Bf1 610 20 : Qd8+ 514 20 : b4 435 20 }
31... Kh7 { Kh7 1197 4 : Qxe7 1541 3 : Kh8 #2 3 }

32. Qf8 { Qf8 2049 20 : Bf1 546 20 : Qf7 468 20 : Qc3 286 20 }
32... h5 { Qxe7 #8 9 : Qa8 #8 9 : Qc8 #8 9 : Qb8 #8 9 }

33. Qg8+ { Qg8+ #5 20 : Bf1 545 20 : h4 517 20 : Bf3 490 20 }
33... Kh6 { Kh6 #4 4 }

34. Qh8+ { Qh8+ #4 20 : Qf7 255 20 : Qf8 255 20 : Qd8 35 20 }
34... Bh7 { Bh7 #3 4 : Kg5 #2 3 }

35. Be4 { Be4 #3 20 : Ng8+ 2130 20 : Qf8 1628 20 : Qd8 582 20 }

1-0

{ Game Summary }

{ White: Borislav Ivanov }
{ Top 1 Match: 21/25 ( 84.0% )
{ Top 2 Match: 25/25 ( 100.0% )
{ Top 3 Match: 25/25 ( 100.0% )
{ Top 4 Match: 25/25 ( 100.0% )

{ Black: Bojan Kurajica }
{ Top 1 Match: 12/25 ( 48.0% )
{ Top 2 Match: 16/25 ( 64.0% )
{ Top 3 Match: 20/25 ( 80.0% )
{ Top 4 Match: 21/25 ( 84.0% )

As you can see, the 4 moves in which Ivanov didn't play the top engine choice
13. Nh4 { Qd2 54 20 : Nh4 49 20 : Qc1 39 20 : b4 36 20 }
14. Qd2 { Qc1 63 20 : Qd2 59 20 : f4 33 20 : b3 31 20 }
16. e4 { Nxf5 198 20 : e4 136 20 : Rfa1 107 20 : Bh3 90 20 }
27. Rxb6 { g4 397 20 : Rxb6 342 20 : Ra7 293 20 : b4 283 20 }
he instead played the 2nd choice move with very little difference in score...

Originally posted by Zygalski
http://www.chessgames.com/perl/chessgame?gid=1703505

[Event "19th Open A"]
[Site "Zadar"]
[Date "2012.12.17"]
[Round "3.12"]
[White "Borislav Ivanov"]
[Black "Bojan Kurajica"]
[Result "1-0"]
[ECO "E00"]
[WhiteElo "2227"]
[BlackElo "2565"]
[PlyCount "69"]
[Analysis "Houdini 1.5a x64 Hash:640 Time:N/A Fixed Depth:20ply"]

{ Book Moves: }

1. ...[text shortened]... tead played the 2nd choice move with very little difference in score...

Is 100 Percent a lot of percents?

Originally posted by RJHinds
How do you set up Houdini 1.5a x 64 to analyze at a fixed depth?

You didn't happen to be at The Zadar Open did you?

Originally posted by RJHinds
How do you set up Houdini 1.5a x 64 to analyze at a fixed depth?

Wrap your computer in chains and submerge upside down in water at a fixed depth.

Originally posted by RJHinds
How do you set up Houdini 1.5a x 64 to analyze at a fixed depth?

Ah, so that is the engine you use. Funny, when i saw white play dxe5 i was immediately reminded of your 'game' against kingshill...

Originally posted by Zygalski
http://www.chessgames.com/perl/chessgame?gid=1703505

[Event "19th Open A"]
[Site "Zadar"]
[Date "2012.12.17"]
[Round "3.12"]
[White "Borislav Ivanov"]
[Black "Bojan Kurajica"]
[Result "1-0"]
[ECO "E00"]
[WhiteElo "2227"]
[BlackElo "2565"]
[PlyCount "69"]
[Analysis "Houdini 1.5a x64 Hash:640 Time:N/A Fixed Depth:20ply"]

Got time to do a similar analysis on his "awful" game ?