1.8.05

Is it computer assistance?

Just after 6th round U1800 Pomaranch team was a leader of division and had a place in final. But teamchess stuff accused 1st board cerebero in using computer assistance. And overturned all his games.

They said "In Cerebero’s 6 games that we looked at, he had zero blunders.
He played 87 % number 1 move each time. I can even give you the
engine and version that was being used but I would rather not."

I cant believe it. There are no motivation to be winner by cheating. And looking through games I cant find something suspicious. But perheps I am not right.

Is someone reading that blog can judge if game is played with help of engine?

There are 9 games which Cerebero played in 45 45 tourney.
Guess in which 6 games he used computer assistance?

[Event "Team 45 45 League T27"]
[Site "Free Internet Chess Server"]
[Date "2005.06.25"]
[Round "1"]
[White "Atreus"]
[Black "cerebero"]
[Result "1/2-1/2"]
[WhiteElo "1850"]
[BlackElo "1851"]
[TimeControl "2700+45"]

1. e4 c5 2. f4 d6 3. Nf3 Nc6 4. Bb5 a6 5. Bxc6+ bxc6 6. O-O g6 7. d4 Qb6 8. c3 Bg7 9. Na3 cxd4 10. cxd4 d5 11. e5 c5 12. Nc2 Nh6 13. dxc5 Qxc5+ 14. Be3 Qb5 15. Ncd4 Qb7 16. Rc1 Ng4 17. Bd2 Bd7 18. h3 Nh6 19. Nb3 O-O 20. Nc5 Qb6 21. b4 Bb5 22. Rf2 Rfd8 23. a4 Bc4 24. Nd4 a5 25. Ncb3 Bxb3 26. Nxb3 axb4 27. a5 Qb7 28. Be3 Rdc8 29. Rfc2 Nf5 30. Bb6 e6 31. Nc5 Qe7 32. Nd3 Rxc2 33. Rxc2 Bf8 34. Rb2 Rc8 35. Rxb4 d4 36. a6 Qe8 37. Rb2 Ne3 38. Qa1 Qc6 39. a7 Ra8 40. Bxd4 Nc2 41. Qb1 Na3 42. Qc1 Qd5 43. Qe3 Nc4 44. Qf2 Nxb2 45. Qxb2 Qe4 46. Qc3 Rc8 47. Qxc8 {Game drawn by
mutual agreement} 1/2-1/2

[Event "Team 45 45 League T27"]
[Site "Free Internet Chess Server"]
[Date "2005.06.24"]
[Round "2"]
[White "cerebero"]
[Black "gonzolawyer"]
[Result "0-1"]
[WhiteElo "1853"]
[BlackElo "1752"]
[TimeControl "2700+45"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Ne5 7. Bb3 e6 8. O-O Be7 9. Bg5 O-O 10. f4 Ng6 11. Qe2 h6 12. Bh4 Nxh4 13. Rad1 e5 14. fxe5 dxe5 15. Nf3 Qb6+ 16. Kh1 Nxf3 17. Rxf3 Bg4 {White resigns} 0-1

[Event "Team 45 45 League T27"]
[Site "Free Internet Chess Server"]
[Date "PDT.07.0"]
[Round "3"]
[White "cerebero"]
[Black "watson"]
[Result "1-0"]
[WhiteElo "1822"]
[BlackElo "1943"]
[TimeControl "2700+45"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Nf3 Ne7 5. Bg5 O-O 6. cxd5 exd5 7. g3 h6 8. Bd2 Nbc6 9. Bg2 Bg4 10. e3 Re8 11. O-O a6 12. Qb3 Rb8 13. Rfc1 Qd6 14. Ne5 Be6 15. Nd3 Ba5 16. Nf4 Red8 17. Nxe6 fxe6 18. a3 Rf8 19. Qc2 Rf6 20. b4 Bb6 21. Ne2 Rbf8 22. Nf4 g5 23. Nd3 Ng6 24. Be1 Nd8 25. a4 c6 26. b5 R8f7 27. bxa6 bxa6 28. Rab1 Ba7 29. Ba5 Nb7 30. Bb4 Qd8 31. Qxc6 Kh7 32. Qxa6 Bb8 33. Rc6 Qd7 34. Rb6 h5 35. Be1 Qc8 36. Rxb7 Kh6 37. Nc5 Bc7 38. Qd3 h4 39. e4 hxg3 40. hxg3 Qd8 41. e5 Nxe5 42. dxe5 Bxe5 43. Rxf7 Rxf7 44. Nxe6 Qf6 45. Qxd5 Re7 46. Nxg5 Qxg5 47. Bd2 Qxd2 48. Qxd2+ Kg6 49. Rb6+ Bf6 50. Rxf6+ Kxf6 51. Qd6+ Re6 52. Qxe6+ Kxe6 53. a5 Kd7 54. f4 Kc7 55. f5 Kb8 56. a6 Ka7 57. f6 Kxa6 58. f7 Kb6 59. f8=Q Kc7 60. Kf2 Kd7 61. Ke3 Ke6 62. Kd4 Kd7 63. Bh3+ Kc6 64. Qc5+ Kb7 65. Bg2+ Ka6 66. Qb4 Ka7 67. Qb7# {Black checkmated} 1-0
[Event "Team 45 45 League T27"]
[Site "Free Internet Chess Server"]
[Date "2005.07.12"]
[Round "4"]
[White "rambovz"]
[Black "cerebero"]
[Result "0-1"]
[WhiteElo "1680"]
[BlackElo "1904"]
[TimeControl "2700+45"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. Qc2 Nc6 7. a3 Bf5 8. Bd3 e6 9. Bd2 dxc4 10. Bxf5 gxf5 11. Qa4 e5 12. dxe5 Ne4 13. Rd1 Nc5 14. Qb5 Nd3+ 15. Ke2 Ncxe5 16. Nxe5 Nxe5 17. Bc1 Qh4 18. h3 b6 19. Rd4 Qh5+ 20. f3 Qg6 21. g4 fxg4 22. hxg4 c6 23. Qa4 b5 24. Qd1 Nd3 25. Re4 f5 26. gxf5 Qg2# {White checkmated} 0-1

[Event "Team 45 45 League T27"]
[Site "Free Internet Chess Server"]
[Date "2005.07.10"]
[Round "4"]
[White "cerebero"]
[Black "Atreus"]
[Result "1-0"]
[WhiteElo "1896"]
[BlackElo "1883"]
[TimeControl "2700+45"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 O-O 7. e4 Bg4 8. Ne5 Be6 9. d5 Bd7 10. Be2 Ne8 11. f4 Nd6 12. Qd3 c6 13. Nxd7 Qxd7 14. e5 Nf5 15. g4 Nh6 16. dxc6 Qxd3 17. cxb7 Qd7 18. bxa8=Q Nc6 19. Qxf8+ Bxf8 20. g5 Nf5 21. O-O Ncd4 22. Bg4 Qc6 23. Rf2 Nh4 24. Be3 Nhf3+ 25. Rxf3 Nxf3+ 26. Kf2 Nh4 27. Kg3 Qg2+ 28. Kxh4 Qxh2+ 29. Bh3 e6 30. Ne4 Qxb2 31. Nf6+ Kg7 32. Ne8+ Kg8 33. Rh1 Qxa2 34. Nf6+ Kg7 35. Bf1 a5 36. Kg4 h5+ 37. gxh6+ Kh8 38. Kf3 Qb1 39. Bg2 Qb7+ 40. Kf2 Qb2+ 41. Kg3 Qb3 42. Ng4 Bc5 43. Re1 Qc3 44. Rc1 {Black resigns} 1-0

[Event "Team 45 45 League T27"]
[Site "Free Internet Chess Server"]
[Date "2005.07.14"]
[Round "5"]
[White "gonzolawyer"]
[Black "cerebero"]
[Result "0-1"]
[WhiteElo "1732"]
[BlackElo "1915"]
[TimeControl "2700+45"]

1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. cxd5 cxd5 5. d3 Nc6 6. Nc3 e5 7. Bg5 Be6 8. Nf3 Be7 9. O-O h6 10. Bxf6 Bxf6 11. a3 O-O 12. Rc1 Rc8 13. b4 a6 14. Na4 b6 15. Qd2 Re8 16. Rc2 e4 17. dxe4 dxe4 18. Qxd8 Bxd8 19. Nd2 Nd4 20. Rxc8 Nxe2+ 21. Kh1 Bxc8 22. Nxe4 Bd7 23. Nac3 Nxc3 24. Nxc3 Bf6 25. Nd5 Bd4 26. Nc7 Rc8 27. Nd5 Kf8 28. f4 Bg4 29. Bf3 Rc1 {White resigns} 0-1

[Event "Team 45 45 League T27"]
[Site "Free Internet Chess Server"]
[Date "2005.07.17"]
[Round "5"]
[White "adingod"]
[Black "cerebero"]
[Result "0-1"]
[WhiteElo "1854"]
[BlackElo "1919"]
[TimeControl "2700+45"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nbd2 O-O 5. e4 d6 6. Bd3 Nc6 7. h3 Nb4 8.
Be2 Nh5 9. Bh2 e5 10. dxe5 dxe5 11. Nxe5 Qe7 12. Nd3 Nxd3+ 13. cxd3 Bxb2 14.
Rb1 Bg7 15. O-O Rd8 16. Qc2 c5 17. a4 Nf6 18. a5 Nd5 19. Nb3 Nc3 20. Rbc1
Be6 21. Na1 b5 22. axb6 axb6 23. e5 Nxe2+ 24. Qxe2 Ra2 25. Nc2 b5 26. Ra1
Rda8 27. Qe4 R8a4 {White resigns} 0-1

[Event "Team 45 45 League T27"]
[Site "Free Internet Chess Server"]
[Date "2005.07.23"]
[Round "6"]
[White "ButiOxa"]
[Black "cerebero"]
[Result "0-1"]
[WhiteElo "1780"]
[BlackElo "1952"]
[TimeControl "2700+45"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. g3 d6 6. Bg2 e5 7. d3 Nge7 8. O-O Nd4 9. h3 O-O 10. Kh2 f5 11. Nd2 exf4 12. Rxf4 Be5 13. Rf2 f4 14. gxf4 Rxf4 15. Rxf4 Bxf4+ 16. Kh1 Be6 17. Nf3 Bxc1 18. Rxc1 Nec6 19. Nxd4 Nxd4 20. Ne2 Qf6 21. b3 Bxh3 {White resigns} 0-1

[Event "Team 45 45 League T27"]
[Site "Free Internet Chess Server"]
[Date "2005.07.22"]
[Round "6"]
[White "cerebero"]
[Black "CamyC"]
[Result "1-0"]
[WhiteElo "1942"]
[BlackElo "2011"]
[TimeControl "2700+45"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. g3 Be7 6. Bg2 O-O 7. Qd3 b6 8. Ne5 Bb7 9. O-O dxc4 10. Qxc4 Bxg2 11. Kxg2 Nxe5 12. dxe5 Nd7 13. f4 Qc8 14. Be3 Rd8 15. Nb5 a6 16. Nd4 c5 17. Nf3 b5 18. Qc2 Nb6 19. Rad1 Qc6 20. Bf2 Nd5 21. a3 c4 22. e4 Nb6 23. Nd4 Qc7 24. f5 Rd7 25. fxe6 fxe6 26. Nxe6 Qxe5 27. Nxg7 Rd3 28. Qe2 Na4 29. Nf5 Rad8 30. Qg4+ Kh8 31. Nh6 Rf8 32. Bd4 {Black resigns} 1-0

8 comments:

Pawnsensei said...

The funny thing is he didn't win all his games. If he were cheating wouldn't he have won? And against lower rated players too.

PS

Jens said...

It also clearly says: 'in the six games that we looked at', so we are only talking about a subset of games, possibly all wins. Take my advice: don't spend too much time arguing your player's case, it is not likely to change anything. At least I never heard of a single case where the 'cheat detectives' admitted to making wrongful accusations. You guys have to bite the bullet and move on!

/Jens

bahus said...

I don't believe that there was computer assistance in any of these games. There were six games without real blunders, but in three of them his opponents avoided them as well (one draw and two unnecessarily resigned). In many games there were typical moves that cerebero plays (weakens castled kings pawn structure needlessly, exchanging pawns). Class B-A players can have good streaks, excellent tournaments and play every now and then games where Fritz finds hardly no improvements. In all of these games there were moments that computer would have handled differently but of course the argument is that he has used computer only on background, avoiding blunders and spotting tactics.

A sad business, if they rule that cerebero has used a computer he’s not allowed to play on TeamChess tournaments in the future. I hope TDs would still reconsider their judgement, but as Jens said it is very unlikely.

1. Atreus - cerebero

Unlikely computer assistance

Computer would have definitely taken the pawn (15..Qxb7). Cerebero missed some stronger moves (34..Qh5!) but played very caferully. A good game and both players played very well, I didn’t see neither player commit a serious blunder.

2. cerebero - gonzolawyer

Definitely no computer assistance :)

3. cerebero - watson

Unlikely computer assistance

Very human play; simplifying when winning instead of looking for mate and missing few tactically even stronger moves.

4. ramboviz - cerebero

No computer assistance

Human like moves:

a) Exchanging pawns when computer likes creating more pressure i.e. Cerebero played 21..fxg4 instead of 21..c6

b) Protecting pawn (23..b5) when computer sees it is protected tactically (23..Nd3! 24.Rxc4 b5! forking rook and queen)

Great game and excellent finish with 25..f5!

5. cerebero - Atreaus

Unlikely computer assistance

a) 11.f4 is a move an amateur would most likely play (11.Qb3 threats to grab the rook and 11.Bf4 develops bishop and protects knight).

b) 16.dxc6 again decreases tension, computer likes 16.f5! and normal 16.Be3 would be clearly better (developing the bishop and allows king finally to castle).

Another wild game and advantage swings from side to side. Atreaus made the last blunder and lost.

6. gonzolawyer - cerebero

No computer assistance

18..Bxd8 is clearly human move, computer sees that pawn b6 is tactically protected and 18..Rexd8! is much stronger.

White resigned needlessly, 29..Rc1 is a good move but 30.Bg2 would still keep the material equal.

7. adingod - cerebero

Unlikely computer assistance

Very good game and again white resigned for imaginary threat. Final move 27..R8a4 is also quite humanlike (threats the queen and there seems to be no escape without losing material) and there were two other moves that were equally strong. However, with 27..R8a4 there was one saving move and adingod missed it (28.Rxa2! and white has two rooks for a queen).

No real blunders on either side, adingod could have continued the game.

8. ButiOxa - cerebero

Unlikely computer assistance

Another short game where cerebero played very well. 13..f4! was excellent move (13..f4 14.gxf4), shattering pawns that protect enemy king but 14..Bxf4 seems to be slightly stronger than 14..Rxf4 (avoiding trades).

21..Bxh3! is nice fake sacrifice winning a pawn and his opponent resigned without reason (only move would have been 22.Nxd4 and black is a pawn up, has two passed pawns and a great position but white could still fight for draw). I don't think cerebero saw further than just gaining a pawn, in fact the sacrifice was very strong and if white accepts it he's going to lose a lot of material.

No real blunders on either side, ButiOxa could have continued the game.

9. cerebero - CamyC

Unlikely computer assistance

Very careful game and 24.f5! is a excellent move. I don't think it is too hard to see (what else white could do?), the knight fork on c6 seems quite obvious threat.

Nice finish and I liked 32.Bd4! a lot. Again I don't think that was too hard to see though, the threats were very basic motifs (royal fork, basic Q+N mate, decoying the defending pieces).

Pomaranch Captain said...

Thank you, bahus

I had a look through games with the same result:

1) cant be computer assistance;
2) unlikely computer assistance, all good moves have very basic motives;
3) one game may be computer assistance, ramboviz - cerebero. There are really may be 87% of
first moves of some strange engine. But I cant believe he used computer against lower-rated
player who had not castled.

Since there are many engines so I can agree that if there are no blunders a move in 90% can be
a 1st move of engine in game that has many forced moves. The problem for me is one. How can it
be that ALL 6 games have so much forced moves that it is like engine.

And Jens is right. There are no way for defence. If we will put games under engine that gives
87% of 1st moves like in games it will give the same again and again. No matter how basic
motives of those moves are, no matter how many of them are forced, result is the same.

Another interesting idea from cerebero's games: never resign in teamchess games.

CelticDeath said...

RomaLavrn, do you have an update on this post as far as the final resolution of this and how Cerebero is doing?

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