1. d4 e5 2. dxe5 Nc6 3. Nf3 Nge7 4. e4 Ng6 5. Qd5 Qe7 6. Bg5 Qb4+ 7.
Nbd2 Qxb2 8. Rb1 Qxc2 9. Bc4 Ncxe5 10. Nxe5 Nxe5 11. Qxe5+ 1-0
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1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. g3 Bb7 5. Bg2 Bb4 6. O-O d6 7. Qa4+
Nc6 8. Nd4 Bxc3 9. Bxc6+ Ke7 10. bxc3 Qc8 11. d3 h6 12. e4 e5 13. Nf5+
Kf8 14. d4 Rb8 15. dxe5 dxe5 16. Ba3+ 1-0
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1. d4 Nf6 2. c4 d5 3. cxd5 Nxd5 4. e4 Nf6 5. Bd3 e6 6. Nc3 c6 7. Nf3
Be7 8. O-O O-O 9. Bg5 Nbd7 10. e5 Nd5 11. Bxe7 Nxe7 12. Qc2 g6 13. b4
Nb6 14. Rac1 Nbd5 15. a3 a5 16. Rb1 Bd7 17. Ne4 Qc7 18. Rfd1 axb4 19.
axb4 Ra3 20. Qd2 Rfa8 21. Qh6 Nf5 22. Nf6+ Nxf6 23. Bxf5 Nh5 24. Ng5
Ng7 25. Qxh7+ Kf8 26. Qh8+ Ke7 27. Qxg7 exf5 28. Qxf7+ Kd8 29. Qf8+
Be8 30. Ne6+ Kd7 31. Nxc7 Kxc7 32. Qe7+ Bd7 33. e6 1-0
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1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nc3 Qe7 7.
Qb3 Na5 8. Qc2 Nxc4 9. a3 Ba5 10. b4 Bb6 11. e3 Ngxe5 12. Bxc4 Nxc4
13. Nd5 Qe6 14. Qxc4 c6 15. Nxb6 axb6 16. Qxe6+ fxe6 17. Bd6 h5 18. h4
Rh6 19. Ng5 Rg6 20. f4 c5 21. b5 Ra4 22. Ke2 e5 23. fxe5 Rg4 24. Rhf1
Rxd6 25. exd6 Rxg2+ 26. Rf2 1-0
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From: John Coffey <john2001plus@gmail.com>
Date: August 6, 2011 6:04:52 PM MDT
To: John Coffey <john2001plus@gmail.com>
Subject: Won Quick Tournament
[Event "Quick Tournament"]
[Site "Salt Lake Community College"]
[Date "Aug 6, 2011"]
[Round "3"]
[White "John Coffey"]
[Black "Alex Gustafsson"]
[Result "1-0"]
1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. a3 Be7 5. Nc3 d5 6. cxd5 exd5 7. Bg5 h6 8. Bxf6
Bxf6 9. e3 O-O 10. Rc1 Ba6 11. Bxa6 Nxa6 12. Qb3 c5 13. Nxd5 cxd4 14. Nxf6+
Qxf6 15. Nxd4 Nc5 16. Qc2 Rfe8 17. O-O Ne4 18. Qc6 Qg5 19. Qb5 Re5 20. Qc6 Ree8
21. Qb5 Re5 22. Qd7 Re7 23. Rc8+ Kh7 24. Qd8 Rxc8 25. Qxc8 Qc5 26. Rc1 Qxc8 27.
Rxc8 Nd6 28. Rc6 Rd7 29. f3 f5 30. Kf2 g6 31. Ke2 Kg7 32. a4 h5 33. b3 Nb7 34.
b4 Kf7 35. Rc8 Nd8 36. Nc6 Nxc6 37. Rxc6 Kg7 38. h4 Kf7 39. e4 fxe4 40. fxe4
Rd4 41. Ke3 Rxb4 42. Rc7+ Ke6 43. Rxa7 Rb1 44. Ra6 Kd7 45. Ra7+ Ke6 46. Rb7 Rb2
47. g3 Rb3+ 48. Kf4 Rb1 49. Kg5 Kd6 50. Kxg6 Ke5 51. Kxh5 Kxe4 52. g4 Kf4 53.
g5 Ra1 54. Rxb6 Rxa4 55. Rf6+ Kg3 56. g6 Ra5+ 57. Kh6 Kxh4 58. Rf4+ Kg3 59. Rc4
1-0. Final 20 moves are approximate since I had to pull the game from memory. This should put me over 2000 Quick Rating.
Sent from my iPhone
1. d4 Nf6 2. Nf3 d5 3. e3 c5 4. c4 e6 5. cxd5 exd5 6. Nc3 Nc6 7. Be2
Bd6 8. O-O O-O 9. a3 cxd4 10. Nxd4 Nxd4 11. exd4 Bf5 12. Bd3 Qd7 13.
Bg5 Ne4 14. Be3 Nxc3 15. bxc3 Rac8 16. Bxf5 Qxf5 17. Qb3 b6 18. a4 Qd3
19. Rfc1 Qc4 20. Qb5 Rc7 21. g3 Rfc8 22. Bd2 h6 23. Qxc4 Rxc4 24. a5
b5 25. a6 b4 26. Ra5 bxc3 27. Be3 c2 28. Rxd5 Ba3 29. Rd7 Bxc1 30.
Bxc1 Ra4 0-1. Some of black's moves could have been better.
1. Nc3 d5 2. d4 Nf6 3. Nf3 c5 4. e3 Bg4 5. Be2 e6 6. h3 Bxf3 7. Bb5+
Nc6 8. Qxf3 cxd4 9. exd4 Bb4 10. Bg5 O-O 11. a3 Nxd4 12. Qd3 Bxc3+ 13.
bxc3 Nxb5 14. Qxb5 Qd7 15. Qd3 Ne4 16. Bd2 Qc7 17. f3 Qg3+ 18. Ke2
Qxg2+ 19. Ke3 Qf2+ 20. Kf4 Qxd2+ 21. Qxd2 Nxd2 22. Rh2 e5+ 23. Kxe5
Nxf3+ 24. Kf4 Nxh2 25. Kg3 Rac8 26. Kxh2 Rxc3 27. Rd1 Re8 28. Rxd5
Re2+ 29. Kg1 g6 30. Kf1 Rcxc2 31. h4 Rf2+ 32. Ke1 Rce2+ 33. Kd1 Ra2
34. h5 Rh2 0-1
1. Nf3 d5 2. e3 c5 3. d4 Nf6 4. c4 e6 5. Nc3 Nc6 6. cxd5 exd5 7. Be2
Bd6 8. O-O O-O 9. a3 Ne4 10. Qc2 cxd4 11. Nxe4 dxe4 12. Qxe4 Re8 13.
Qc2 Bg4 14. Rd1 Rc8 15. Qd3 Bc5 16. b4 Bb6 17. exd4 Bxf3 18. Bxf3 Bxd4
19. Rb1 Re1+ 20. Rxe1 Bxf2+ 21. Kxf2 Qxd3 22. Bb2 Qc2+ 23. Kg3 Rd8 0-1
eventually
Sent from my iPhone
1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3
cxd4 8. Nxd4 Bc5 9. Qd2 O-O 10. Nce2 Qb6 11. c3 Nxd4 12. Bxd4 f6 13.
O-O-O fxe5 14. Bxc5 Qxc5 15. fxe5 Nxe5 16. Nd4 Ng4 17. Re1 e5 18. Nb3
Qb6?!?! (I was trying to give up a pawn for activity.) 19. Be2? Nf6
20. Rhf1 Be6 21. Qg5 Ne4 (ditto) 22. Qxe5 Qe3+ 23. Kb1 Nd2+ 0-1
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http://www.youtube.com/watch?v=0f3z21ciaKg&feature=youtube_gdata_player
http://www.youtube.com/watch?v=-FUQDCXDnoQ&feature=youtube_gdata_player
I saw an app for $2.99 that had 1200 tactics problems. I can no longer find this app. I am thinking that it was removed from the app store. I also read online about an app with the same description, but I could not find the app name in the app store.
I am thinking of paying $7.99 for the full shredder to get the extra 1100 tactics problems, so that I can have them on my trip.
John Coffey
| Message: | Hi John: I live in Brigham City and was wondering if you ever give chess lessons? Let me know. Thanks, Kevin. |
1. e4 e6 2. c3 d5 3. e5 c5 4. Na3 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Ne2
Qg5 8. O-O Qxe5 (d4!) 9. d4 Qh5 10. Qd3 Bd6 11. Bf4 Bxf4 12. Nxf4 Qg4
13. Qe3 cxd4 14. Qxd4 Nf6 15. Rae1 O-O 16. Re3 Qf5 17. f3 Nd7 18. Nd3
Rfe8 19. Ne5 Nxe5 20. Rxe5 Qf6 21. f4 Qg6 22. Rf3 f5 23. Rg3 Qf7 24.
Nc2 Re7 25. Qf2 Rc8 26. Nd4 Ba4 27. Rge3 Rce8 28. Qh4 Bd7 29. Nxf5 Kf8
30. Qxh7 Bb5 31. Qh8+ Qg8 32. Qxg8+ Kxg8 33. Nxe7+ Rxe7 34. Rxe6 Rf7
1/2-1/2 because black eventually swindled a stalemate. The score
toward the end is not totally accurate. It is as close as I can get.
Sent from my iPhone
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Nf3 e5 7. dxe5
dxe5 8. Qxd8 Rxd8 9. Bg5 Rd6 10. Nb5 Rc6 11. Nxe5 Rc5 12. O-O-O Rxe5
13. Rd8+ Re8 14. Bxf6 Rxd8 15. Bxd8 Nc6 16. Bxc7 Be6 17. Be2 Bh6+ 18.
Kb1 Rc8 19. Bg3 a6 20. Nd6 Rc7 21. Nf5 gxf5 22. Bxc7 fxe4 23. b3 e3
24. fxe3 Bxe3 25. Bg4 f5 26. Re1 fxg4 27. hxg4 Bxg4 28. Rxe3 Nd4 29.
Re8+ Kf7 30. Rb8 Bf5+ 31. Kb2 1-0
Sent from my iPhone
1. e4 e6 2. d4 d5 3. e5 c5 4. Qg4 cxd4 5. Nf3 Nc6 6. h4 h5 7. Qg3 Nh6
8. Bd3 Nf5 9. Bxf5 exf5 10. a3 Be6 11. O-O Rc8 12. b4 a5 13. b5 Na7
14. Nxd4 Qd7 15. a4 g6 16. Be3 Bc5 17. Nb3 Bxe3 18. Qxe3 Ra8 19. N1d2
Nc8 20. Nc5 Qc7 21. Nf3 b6 22. Nxe6 fxe6 23. Qg5 Qf7 24. c4 Ne7 25.
Rac1 O-O 26. Qh6 Qh7 27. Qxh7+ Kxh7 28. Ng5+ Kg8 29. Nxe6 Rfc8 30. c5
bxc5 31. Nxc5 Rcb8 32. Nd7 Rb7 33. Nf6+ Kf7 34. Rc5 Ke6 35. f4 Rc8 36.
Rxc8 Nxc8 37. Rc1 Nb6 38. Rc6+ Kf7 39. Kf2 Nxa4 40. Nxd5 Rxb5? 41. e6+
1-0
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1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. b6 d6 6. Nc3 Nbd7 7. e4 g6
8. Nf3 Bg7 9. Be2 O-O 10. O-O Qxb6 11. Nd2 Bb7 12. Nc4 Qc7 13. Bf4
Rfd8 14. a4 Ne8 15. a5 Rdb8 16. Qc2 Bc8 17. Na4 Ra7 18. Rfc1 Bd4 19.
Nab6 Nef6 20. Ra3 Rab7 21. Rd3 Nxb6 22. Nxb6 Rxb6 23. axb6 Qxb6 24. b3
Qb4 25. Bd2 Qb6 26. Be3 Nxe4 27. Bxd4 cxd4 28. Qc4 Bf5 29. Rxd4 Nxf2
30. Kxf2 Rc8 31. Qxc8+ Bxc8 32. Rxc8+ Kg7 33. Rc4 e5 34. dxe6 fxe6 35.
Rb4 Qc5 36. Kf1 e5 37. Rdc4 Qe3 38. Rc7+ Kf6 39. Bxa6 Qd2 40. Rbb7
Qd1+ 41. Kf2 Qd2+ 42. Be2 e4 43. Rf7+ Kg5 44. Rb5+ d5 45. Rd7?? Qf4+
46. Ke1 Qc1+ 47. Bd1 Qe3+ 48. Kf1 1/2-1/2
Sent from my iPhone
Yes. I know. I am on the board of directors of the Utah Chess Association that donated money to help him go to Greece.
I have played him in tournaments a number of times.
From: Witmer, Robert C.
On Oct 21, 2010, at 8:53 AM, <granthodson wrote:
John,
Q: What's this cool new chess program you mentioned that is free? Do you need to be a programmer to know how to use it?
From: John
Subject: Re: Chess Rating
Glicko is enough. The Glicko weights recent results more based on how infrequently you compete.
Best wishes,John CoffeySent from my iPhone
Larry wrote:
Do you think the Glicko system is good enough, or could you design a better one?
From: larry.r.trout@
Date: September 22, 2010 6:50:39
'The Elo rating system was invented half a century ago by Hungarian-born physicist and chess master Arpad Elo. It is the most famous technique for rating chess players and is used throughout the chess world. It has been applied to many other contests as well, including other board games, sports, and video games. However, it has never really been demonstrated that the Elo approach to calculating chess ratings is superior. Elo's formula was derived theoretically, in an era without large amounts of historical data or significant computing power. With the benefit of powerful computers and large game databases, we can easily investigate approaches that might do better than Elo at predicting chess results.
There are several alternatives to the Elo approach. Professor Mark Glickman developed the Glicko and Glicko-2 systems, which extend the Elo system by introducing additional parameters to represent the reliability and volatility of player ratings. Ken Thompson uses a linearly weighted average of a player's last 100 results to calculate a weighted performance rating. Jeff Sonas (who put together this competition) developed Chessmetrics ratings to maximize predictive power. More details are available on the hints page.
We want to see if somebody out there can do even better. Competitors train their rating systems using a training dataset of over 65,000 recent results for 8,631 top players. Participants then use their method to predict the outcome of a further 7,809 games.'Halfway point:
'We have just passed the halfway mark of the "Elo vs the Rest of the World" contest, scheduled to end on November 14th. The contest is based upon the premise that a primary purpose of any chess rating system is to accurately assess the current strength of players, and we can measure the accuracy of a rating system by seeing how well the ratings do at predicting players' results in upcoming events. The winner of the contest will be the one whose rating system does the best job at predicting the results of a set of 7,800 games played recently among players rated 2200+.
So far we have had an unprecedented level of participation, with 162 different teams submitting entries to the contest! There is also a very active discussion forum to promote the free flow of ideas, although many teams are still hesitant to share too many details about their approach (especially considering that the winner will receive a copy of Fritz signed by Garry Kasparov, Viswanathan Anand, Anatoly Karpov, and Viktor Korchnoi). Both Chessbase and Kaggle have donated generous prizes, to be awarded to top-performing participants who are willing to share their methodology publicly.
A wide range of approaches have been tried, including almost every known chess rating system as well as other tries involving neural networks, machine learning, data mining, business intelligence tools, and artificial intelligence. In fact over 1,600 different tries have been submitted so far, and we anticipate far more submissions as the competition heats up over the final seven weeks.
The #1 spot is currently held by Portuguese physicist Filipe Maia, who confesses to little knowledge about statistics or chess ratings, but is nevertheless managing to lead the competition! He is also the author of El Turco, the first-ever Portuguese chess engine. Out of the current top ten teams on the leaderboard, seven use variants of the Chessmetrics rating system, two are modified Elo systems, and one is a "home-grown variant of ensemble recursive binary partitioning". That last approach belongs to the #3 team on the public leaderboard, a team known as "Old Dogs With New Tricks". This team is a collaborative effort between Dave Slate and Peter Frey, both prominent leaders in computer chess for many years.
Although the "Old Dogs With New Tricks" team clearly has a lot of chess expertise, and the #2 spot is held by Israeli mathematician and chess player Uri Blass (FIDE rating 2051), the top ten or twenty teams are primarily comprised of mathematicians, data miners, and other scientists having minimal direct experience with chess or chess ratings. This suggests that experts on chess rating theory might still have a lot to learn from experts in other fields, which of course is one of the desired outcomes of this contest. We have attracted interest from around the globe, with the top twenty comprised of participants from Portugal, Israel, USA, Germany, Australia, UK, Singapore, Denmark, and Ecuador.'
http://kaggle.com/blog/2010/09/21/elo-vs-the-rest-of-the-world-at-the-halfway-mark/
Do you think you either have, or could come up with a good rating system?
See the link below. In chess tournaments going back many years I have played with almost all of the Chen siblings...
1. d3 d5 2. Nd2 e5 3. Ngf3 Nc6 4. e4 Nf6 5. Be2 Bc5 6. c3 O-O 7. b4
Bb6 8. b5 dxe4 9. dxe4 Ng4 10. O-O Ne7 11. h3 Nxf2 12. Rxf2 Ng6 13.
Nc4 Bxf2+ 14. Kxf2 Qe7?? 15. Ba3 Qf6 16. Bxf8 Kxf8 17. Ne3 Nf4 18. Nd5
Nxd5 19. Qxd5 Qb6+ 20. Kf1 f6?? 21. Bc4 1-0
A fine example of how not to play chess.
I was lucky.
