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zanshin
Member since May-03-07
Born in Los Baņos, Laguna, Philippines. Started playing chess during Fischer - Spassky World Championship. Favorite player is Eugenio Torre, but Wesley So is one to watch. Attended University of the Philippines at Los Baņos, Imperial College (London) and Purdue (Indiana) for education in biology and computer science. Currently located in Tallahassee, Florida.

Avatar and handle because of interest in martial arts: 1st degree black belt Wado-ryu karate from http://www.higashi.org.uk/

Free chess engines or GUIs:
http://freechess.50webs.com/engines...
http://www.superchessengine.com/
http://www.superchessengine.com/che...
http://www.playwitharena.com/
http://homepages.tesco.net/henry.ab...
http://www.rybkachess.com/index.php...

Chess programming:
http://www.frayn.net/beowulf/index....
http://perl.guru.org/scott/hobbies/...
http://en.wikipedia.org/wiki/Nolot
http://chessprogramming.wikispaces....
http://members.home.nl/matador/ches...
http://www.pdf-search-engine.com/ch... http://www.gamedev.net/reference/pr... http://www.maths.nott.ac.uk/persona...

Alpha-beta pruning
http://www.cs.ucla.edu/~rosen/161/n...

http://www.ocf.berkeley.edu/~yosenl...

World Team Administrator of Gift Membership Page until April 6, 2011. Nominations and suggestions were made from April 25 to 30, 2009. Congratulations to User: zsoydd and User: DanLanglois

Latest recipient: User: DPLeo

Next awarding is planned for Christmas 2009.

Human GMs analyze schematically by formulating plans or objectives, then calculating the means to achieve them. Engines analyze as many positions as possible and play the move or line that returned the best numerical evaluation. In the position below from Short vs Timman, 1991


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Engines cannot see the strategy of mating with the King (starting with <31.Kh2>) until deep into the line or unless sliding back from the won position (Rybka 3 [+3.43] d=23 31.Ne1)(Modern Chess Analysis by Robin Smith 2004; Gambit Publications, London).

From <How to Use Computers to Improve your Chess by Christian Kongsted http://www.gambitbooks.com/books/co...) >

The horizon effect prevents engines from realizing that the Black Bishop will be pinned permanently after <32...Rxa2?>, thus salvaging a draw for Anand after <33.Rdd2> (From Anand - Fritz 6, 1999 zanshin chessforum).


click for larger view

Rybka 3: [-1.35] d=26 32...Rxa2 (1:07.46) 543881kN

<Types of positions misevaluated by engines, excerpts from Modern Chess Analysis by Robin Smith>

<1. exchange sacrifices> - Engines have difficulties evaluating material loss for positional considerations. In Kasparov vs Shirov, 1994


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Kasparov played <17.Rxb7!> dominating the light squares, especially d5. (See John Nunn's comments quoted on the gamepage)

<2. box canyons> - ie forced lines. The term is taken from canyons in the American southwest where floods have carved out a single path forward. Engine evals may be quite different at the entrance and exit of a box canyon. In Nunn vs Van der Wiel, 1982, Nunn played <29.e5?!> entering a box canyon until move 40 that he felt was won (and too many plies away for engines to analyze). Engines prefer <29.Rc1> or <29.Rxg8>.

<3. Prisons> - trap a piece, requiring a sacrifice to escape. From Timman vs P Nikolic, 1987, engines will want to play <24.Be2?> likely leading to a draw (Rybka 3 [+0.68] d=23 24.Be2).


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Timman played <24. Ra6! Nxa6 25. bxa6 Rd7 26. Kf1 Ra7 27.Bb7>


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imprisoning the Rook and winning the game.

<4. King drift> refers to gradual movement of pawns and pieces towards the King. Engines often do not sense the danger before it is too late. In Smirin vs Shredder, 2002, Shredder allows King drift by weak moves in the opening.

<5. material imbalances> Positions with significant material imbalances are difficult for engines to evaluate (eg where one side has sacrificed material for a positional bind). In the position below from Junior 8 - Hiarcs 8 2003, different engines evaluated the position as +2.5 to slight advantage to Black.


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White probably has the advantage and eventually won. Positions like this are good candidates for engine matches.

<6. quiet positions> When short term tactical gain is clear, engines are very purposeful. However, they can struggle in positions where there are no clear short term objectives. In R Knaak vs Geller, 1982, White needs to re-position his Bishop to b3, Rook b1 to d1, Knight to f4 all with pressure on d5. All engines tested preferred <22.h6?> (Rybka 3 [+0.69] d=19 22.h6)


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<7. fortresses> - are formations that prevent forces from breaking in. This technique is usually found in the endgame to hold a draw under material disadvantage. Black has played <45...Qb6?!> in A Petrosian vs L Hazai, 1970


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Engines cannot resist taking the Queen with high material gain. (Rybka 3 [+6.76] d=22 46.Nxb6 (0:08.56) 41463kN) However, the resulting fortress is a draw. This game was featured as a recent chessgames GOTD (April 19, 2009). A possible win for White is given in the CG game page.

<8. passed pawns> - Engines love passed pawns, especially advanced ones. In Abreu - Perez (1999), the following position is evaluated at between +2 to +2.5 by several engines (Rybka 3 [+1.41] d=17 1.Re1). However, the position is drawn because the pawns cannot Queen.


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<9. perpetual check> Whereas draws by repetition can be detected easily, perpetual checks are difficult for engines because one side can salvage a draw despite severe material disadvantage. At move 55 in Korchnoi vs G Rechlis, 1988, the game was drawn in the position below:


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Despite the large advantage given to White by engines (Rybka 3 [+7.25] d=19 55...Kh2), the game is a draw by perpetual check.

Another example based on J. H. Donner (2006) "The King" (white to move):


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Rybka finds the right move (5.Nh6!), but the evaluation is incorrect (-4.35 d=22 5.Nh6). The game is a draw by perpetual check along the g-file. (http://www.chessbase.com/newsdetail...)

<10. quirks in engine design> Based on a puzzle from http://susanpolgar.blogspot.com/ (8 July 2009).

In the position below, White wins by under-promoting the pawn to Bishop. Fritz and Fruit (but not Crafty) both find the solution. Rybka 3 does not because under-promotion to Bishop is not included in Rybka analysis (http://rybkaforum.net/cgi-bin/rybka...)


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Fritz 10: 2.h8B (5.55) Depth: 23/41 00:04:44 709mN, tb=336

Fruit: [+5.04] d=27 1.h8B Qb8 2.Be5 Qc7 3.Nd6 Kg5 4.Ne4 Kh4 5.Bg3 Qxg3 6.Nxg3 Kg5 7.Nf1 Kf4 8.Kg2 h4 9.Nh2 Ke4 10.Nf3 Kf5 11.Nxh4 Kf4 12.Nf3 Ke4 13.h4 Kf5 14.Kg3 Kf6 15.Kf4 Kg7 16.Kxe3 Kg6 17.Ke4 Kh5 (0:00.31) 56559kN

Crafty: [+7.58] d=21 1.h8Q Qxh8 2.Nxh8 Kg5 3.Nf7 Kf6 4.Nd6 Ke5 5.Nc8 Kd5 6.Ne7 Kc4 7.Nf5 Kxb5 (0:00.49) 132436kN

Rybka 3: [+0.00] d=27 1.h8Q Qb8 2.Qe5 Qd6 3.Nxd6 (0:02.13) 27379kN

(see also: zanshin chessforum)

<11. zugzwang positions> Engines are poor at handling positions where an advantage is conveyed by <not> moving (because of "null move heuristic"). In the position below, engines cannot find the winning line (<1.Qc8!> Kg8 2.Bc7 Qxc8 3.gxf7+ Kh8 4.Be5 Qc5 5.Bb2 Nc7 6.Ba1 a4 7.Bb2 a3 8.Ba1 a2 9.Bb2 a1Q 10.Bxa1 Qe5+ 11.Bxe5 Nd5+ 12.Kg5+ Nf6 13.Bxf6#):


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[+0.17] d=23 1.Qc5 Kg8 2.gxh7 Kh8 3.Be7 Qb8 4.Qg5 Qb2 5.Kxf7 Qb3 6.Kf8 Qb8 7.Bd8 Qb4 8.Kf7 Qb7 9.Kf6 Qc6 10.Ke7 Qb7 11.Kd6 Qb4 12.Ke5 (0:12.03) 132204kN (Rybka 3)

(See http://rybkaforum.net/cgi-bin/rybka...)

Contact: zanshin dot chess at gmail dot com

>> Click here to see zanshin's game collections.

Chessgames.com Full Member

   zanshin has kibitzed 7150 times to chessgames   [more...]
   Nov-20-09 zanshin chessforum (replies)
 
zanshin: <kormier: World Cup 2009> Thanks for the reminder <kormier>. There are three Filipinos playing, so I will be following closely. User: gmjoey has drawn Kamsky .. ugh! Tough draw.
 
   Nov-20-09 Renato Naranja vs Fischer, 1970
 
zanshin: <Eyal> Little numerical change in the evaluation after <19.Bb2>: [DIAGRAM] [+0.68] d=18 19...Kh8 20.Nd5 e5 21.Rg3 Rg8 22.Nc3 Qf4 23.Qxf4 exf4 24.Rf3 Ne8 25.Rxf4 Be6 26.Rh4 Be5 27.Na4 Ng7 28.Bd3 Bf5 29.Kf2 a5 30.b5 (0:11.15) 68032kN
 
   Nov-20-09 Kibitzer's Café (replies)
 
zanshin: <tpstar> That was pretty good - funny, yet clever with the fruity theme. Nice to see this page lightening up a little ;-)
 
   Nov-19-09 M Pavlovic vs G Cabrilo, 1991 (replies)
 
zanshin: <OK, but I was actually thinking of 35.NxR (or 37.NxR)> I see - good question! ... although at that point, White was lost. [DIAGRAM]
 
   Nov-19-09 Wesley So (replies)
 
zanshin: <AlphaTsino: When these WCC games start?> I think the opening ceremony is tomorrow and there is a typo on this page: http://www.ugra-chess.ru/eng/main_e... Kung hindi ako nagkakamali, the games start Saturday.
 
   Nov-19-09 Carlsen vs Kosteniuk, 2009 (replies)
 
zanshin: <TB> Lol! She's certainly not your average chess player ;-)
 
   Nov-18-09 Red October chessforum
 
zanshin: <RO> Ok, cool - thanks. You can use the email address in my forum header. Hope you had a nice flight ;-)
 
   Nov-17-09 RandomVisitor chessforum
 
...
 
   Nov-16-09 The Chess Express chessforum (replies)
 
zanshin: <TCE> Yes, I do know about BoB III. Thanks. Although I am officially signed up (I think with you on Team Black), I will not be participating. I just have too much going on at the moment. Thanks for the reminder though - and good luck with the game!
 
   Nov-16-09 AdrianP chessforum
 
zanshin: <Adrian> Thanks for your comments. In a past exchange with <achieve>, I expressed my sentiments about engine analysis during live games, so there is no need to repeat them. You can read them here if you are interested: achieve chessforum I probably sympathize with your ...
 
(replies) indicates a reply to the comment.

Go Gators! Go Purdue!

Kibitzer's Corner
< Earlier Kibitzing  · PAGE 114 OF 114 ·  Later Kibitzing >
Nov-17-09   kormier: tk's <<zanshin>>, i only remember a possible prediction for "2030 and something about a cluster of petaflops that would use or be that exact 6.23 x 10^23, that was about 1 year ago, by.....
Nov-17-09
Premium Chessgames Member
  zanshin: Hi <kormier> OK, I see what you're saying. Thanks for the clarification.
Nov-18-09
Premium Chessgames Member
  Red October: actually I am on the Rybka Warriors, though my contribution has been minimal as I do not want to steal their thunder, PM Vytron at the Rybka forum if you want to join
Nov-18-09
Premium Chessgames Member
  Red October: btw I have the first Beta version of my Opening Book in .ctg format if you have the Fritz interface I can send it to you however I would prefer it be kept private and not circulated for now :)
Nov-18-09
Premium Chessgames Member
  Red October: this is a 16 min testing game against a well known book makers book :)

(my book is playing White)

[Event "[20] Rybka 3 Dynamic 32-bit vs Rybka 3 32-bit (19/"] [Site "Local computer"]
[Date "2009.11.19"]
[Round "1"]
[White "Rybka 3 Dynamic 32-bit"]
[Black "Rybka 3 32-bit"]
[Result "1-0"]
[ECO "B90"]
[TimeControl "16 min/game"]

[%t Long] White checkmates.[%t bLon] Processor: Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz^13 ^10 White: Rybka 3 Dynamic 32-bit, hash size: 128M, opening book: Pandora5^13 ^10 Black: Rybka 3 32-bit, hash size: 512M, opening book: Heretic 4.2^13 ^10 1. e4 [%clko 0:16:00][%emt 0:00:00][%eval 11,1] 1... c5 [%clko 0:16:00][%emt 0:00:00][%eval 29,1] 2. Nf3 [%clko 0:15:58][%emt 0:00:00][%eval 29,1] 2... d6 [%clko 0:15:58][%emt 0:00:00][%eval 29,1] 3. d4 [%clko 0:15:58][%emt 0:00:00][%eval 22,1] 3... cxd4 [%clko 0:15:58][%emt 0:00:00][%eval 22,1] 4. Nxd4 [%clko 0:15:58][%emt 0:00:00] [%eval 22,1] 4... Nf6 [%clko 0:15:58][%emt 0:00:00][%eval 22,1] 5. Nc3 [%clko 0:15:58][%emt 0:00:00][%eval 22,1] 5... a6 [%clko 0:15:58][%emt 0:00:00][%eval 29,1] 6. Be3 [%clko 0:15:58][%emt 0:00:00][%eval 26,1] 6... e5 [%clko 0:15:58][%emt 0:00:00][%eval 52,1] 7. Nb3 [%clko 0:15:58][%emt 0:00:00][%eval 52,1] 7... Be6 [%clko 0:15:58][%emt 0:00:00] [%eval 52,1] 8. f3 [%clko 0:15:58][%emt 0:00:00][%eval 22,1] 8... Nbd7 [%clko 0:15:58][%emt 0:00:00][%eval 22,1] 9. Qd2 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 9... b5 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 10. a4 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 10... b4 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 11. Nd5 [%clko 0:15:58][%emt 0:00:00] [%eval 18,1] 11... Bxd5 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 12. exd5 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 12... Nb6 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 13. Bxb6 [%clko 0:15:58][%emt 0:00:00] [%eval 18,1] 13... Qxb6 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 14. a5 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 14... Qb7 [%clko 0:15:58][%emt 0:00:00][%eval 18,1] 15. Bc4 [%clko 0:15:58][%emt 0:00:00][%eval 18,1]

Nov-18-09
Premium Chessgames Member
  Red October: 15... g6 [%clko 0:15:58][%emt 0:00:00][%eval 68,1] 16. Ra4 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 16... Rb8 [%clko 0:15:58][%emt 0:00:00] [%eval 0,1] 17. Nc1 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 17... h5 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 18. Nd3 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 18... Bh6 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 19. Qe2 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 19... Nxd5 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 20. Bxd5 [%clko 0:15:58][%emt 0:00:00] [%eval 0,1] 20... Qxd5 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 21. Nxb4 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 21... Qd4 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 22. c3 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 22... Qf4 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 23. Kf2 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 23... h4 [%clko 0:15:58][%emt 0:00:00] [%eval 0,1] 24. b3 [%clko 0:15:58][%emt 0:00:00][%eval 0,1] 24... Qd2 [%clko 0:15:58][%emt 0:00:00][%eval 0,1]White out of book 25. Qxd2 [%emt 0:00:17][%eval 80,14] 25... Bxd2 [%clko 0:15:41][%emt 0:00:00][%eval 0,1] 26. Nxa6 [%emt 0:00:20][%eval 97,16] 26... Rxb3 [%clko 0:15:20][%emt 0:00:00][%eval 0,1] 27. Rb4 [%clko 0:15:58][%emt 0:00:00][%eval 97,15] 27... Rxb4 [%clko 0:15:20][%emt 0:00:00][%eval 0,1] 28. cxb4 [%clko 0:15:58][%emt 0:00:00][%eval 97,15] 28... Kd7 [%clko 0:15:20][%emt 0:00:00][%eval 0,1] 29. Ke2 [%emt 0:00:42][%eval 89,16] 29... Ra8 [%clko 0:14:39][%emt 0:00:00][%eval 0,1] 30. b5 [%emt 0:00:30][%eval 114,16]Black out of book 30... Bg5 [%emt 0:00:20][%eval 100,14]
Nov-18-09
Premium Chessgames Member
  Red October: 31. Rd1
[%emt 0:00:17][%eval 113,17] 31... Be7 [%clko 0:13:52][%emt 0:00:00] [%eval 0,1] 32. g3 [%emt 0:00:49][%eval 114,16] 32... g5 [%clko 0:13:02][%emt 0:00:00][%eval 0,1] 33. g4 [%emt 0:00:06][%eval 148,14] 33... h3 [%emt 0:00:14][%eval 117,16] 34. Ke3 [%emt 0:00:11][%eval 141,15] 34... Bd8 [%emt 0:00:14][%eval 136,15] 35. Kd3 [%emt 0:00:11] [%eval 141,16] 35... f6 [%emt 0:00:23][%eval 136,15] 36. Ra1 [%emt 0:01:30][%eval 202,16] 36... Ke6 [%emt 0:00:24][%eval 171,15] 37. Kc3 [%clko 0:14:23][%emt 0:00:00][%eval 202,15] 37... f5 [%emt 0:01:31] [%eval 211,16] 38. gxf5+ [%emt 0:00:06][%eval 220,13] 38... Kxf5 [%emt 0:00:25][%eval 236,16] 39. Kc4 [%clko 0:12:27][%emt 0:00:00][%eval 220,12] 39... d5+ [%emt 0:01:10][%eval 250,16] 40. Kxd5 [%clko 0:11:17][%emt 0:00:00][%eval 221,14] 40... Kf4 [%emt 0:01:41][%eval 230,17] 41. Kc6 [%emt 0:00:47][%eval 217,14] 41... Ra7 [%emt 0:01:26] [%eval 210,17] 42. Ra3 [%emt 0:00:46][%eval 217,14] 42... e4 [%emt 0:00:07][%eval 273,12] 43. fxe4 [%emt 0:01:07][%eval 284,15] 43... g4 [%emt 0:01:12][%eval 321,14] 44. Kd5 [%emt 0:00:53][%eval 284,16] 44... Rd7+ [%emt 0:00:17][%eval 325,14] 45. Kc4 [%clko 0:06:33][%emt 0:00:00] [%eval 284,14] 45... Rd2 [%emt 0:00:18][%eval 325,14] 46. b6 [%emt 0:00:17][%eval 331,13] 46... Be7 [%emt 0:00:15][%eval 325,14] 47. Nb4 [%emt 0:00:04][%eval 438,12]
Nov-18-09
Premium Chessgames Member
  Red October: 47... Kxe4 [%emt 0:00:15][%eval 335,12]
48. Rb3 [%clko 0:05:44][%emt 0:00:00][%eval 424,12] 48... g3 [%emt 0:00:52][%eval 490,14] 49. Rxg3 [%clko 0:04:53][%emt 0:00:00][%eval 438,10] 49... Rd4+ [%emt 0:00:44][%eval 511,14] 50. Kb5 [%clko 0:04:09][%emt 0:00:00][%eval 424,12] 50... Rxb4+ [%emt 0:00:37][%eval 490,13] 51. Kc6 [%clko 0:03:32][%emt 0:00:00][%eval 438,10] 51... Kf5 [%emt 0:00:05][%eval 512,13] 52. a6 [%emt 0:00:10][%eval 475,14] 52... Bd8 [%emt 0:00:05][%eval 512,14] 53. b7 [%emt 0:00:08][%eval 468,15] 53... Rb6+ [%emt 0:00:07][%eval 512,14] 54. Kd7 [%emt 0:00:09][%eval 468,15] 54... Bf6 [%emt 0:00:03][%eval 511,13] 55. Rxh3 [%emt 0:00:13] [%eval 503,14] 55... Bd4 [%emt 0:00:05][%eval 514,12] 56. Rh4 [%emt 0:00:05][%eval 512,13] 56... Be5 [%emt 0:00:04][%eval 531,11] 57. Rh5+ [%clko 0:03:01][%emt 0:00:00][%eval 503,10] 57... Kf4 [%emt 0:00:03] [%eval 535,11] 58. Rxe5 [%emt 0:00:04][%eval 512,14] 58... Kxe5 [%emt 0:00:02][%eval 535,11] 59. Kc7 [%emt 0:00:05][%eval 512,15] 59... Rxa6 [%emt 0:00:02][%eval 534,11] 60. b8=Q [%emt 0:00:04][%eval 512,15] 60... Rh6 [%emt 0:00:03][%eval 540,11] 61. Qf8 [%emt 0:00:04][%eval 555,12] 61... Rf6 [%emt 0:00:02][%eval 553,11] 62. Qe7+ [%emt 0:00:04] [%eval 611,12] 62... Kf5 [%emt 0:00:06][%eval 654,11] 63. h4 [%emt 0:00:31][%eval 936,13] 63... Kg6 [%emt 0:00:24][%eval 1060,11] 64. h5+ [%emt 0:00:25][%eval 938,12] 64... Kf5 [%emt 0:00:21][%eval 1060,11] 65. Qg7 [%emt 0:00:06][%eval 937,12] 65... Ke6 [%emt 0:00:04][%eval 1045,10] 66. Kd8 [%emt 0:00:04][%eval 903,10] 66... Kf5 [%emt 0:00:06] [%eval 1039,9] 67. h6 [%emt 0:00:02][%eval 932,9] 67... Rg6 [%emt 0:00:05][%eval 1053,9] 68. Qf7+ [%emt 0:00:06][%eval 965,8] 68... Kg5 [%emt 0:00:02][%eval 1076,9] 69. h7 [%emt 0:00:07][%eval 972,9] 69... Rd6+ [%emt 0:00:02][%eval 1091,7] 70. Ke7 [%emt 0:00:09][%eval 29990,8] 70... Rc6 [%emt 0:00:04][%eval 29987,9] 71. Qd5+ [%clko 0:01:36][%emt 0:00:00][%eval 29993,3] 71... Kf4 [%clko 0:04:25][%emt 0:00:00][%eval 29991,5] 72. Qxc6 [%clko 0:01:36][%emt 0:00:00][%eval 29994,3] 72... Ke5 [%clko 0:04:25][%emt 0:00:00][%eval 29993,3] 73. h8=Q+ [%clko 0:01:35][%emt 0:00:00][%eval 29996,5] 73... Kf4 [%clko 0:04:24][%emt 0:00:00][%eval 29996,3] 74. Qd4+ [%clko 0:01:35][%emt 0:00:00][%eval 29997,3] 74... Kg3 [%clko 0:04:24][%emt 0:00:00][%eval 29997,3] 75. Qg6+ [%clko 0:01:35][%emt 0:00:00][%eval 29998,3] 75... Kh2 [%clko 0:04:24][%emt 0:00:00][%eval 29998,3] 76. Qh8# [%clko 0:01:35][%emt 0:00:00][%eval 29999,3] 1-0

this also highlights the case for hand tuning, 17...h5 has a 57% success rate so in raw priority it will be played but 18.Nd3 has an 85% success rate.. of course this is based on the seed games used to make the book...

one thing though.. high depth lines are of little use in these types of engine books since if the opposition deviates there is not enough time to calculate the correct continuation (unlike in centaur chess or long control CC)

so what most aim for in these types of books are imbalanced positions that the engines misevaluate in short depth analysis which is like a knife edge approach.. but it leads to a lot of wins and thats why 1.e4 and the Sicilian are very popular in these eng v eng matches...

Nov-18-09
Premium Chessgames Member
  hms123: <z> Please leave Red's games up for a bit--I want to copy them but don't have time now--dinner is about to be served--thanks--hms
Nov-18-09
Premium Chessgames Member
  zanshin: <howard> Don't worry - they will not be deleted. Hope you have (or had) a good dinner!
Nov-18-09
Premium Chessgames Member
  hms123: <z> I did--some wine and some swordfish with garlic. Yum! thanks--hms
Nov-19-09
Premium Chessgames Member
  Red October: I should be able to send you the mail some time in the evening US time, will be stuck in meetings all day :(
Nov-19-09
Premium Chessgames Member
  zanshin: <howard> Very exotic! I'm afraid to say I had pizza (end of season for my son's soccer team).
Nov-19-09
Premium Chessgames Member
  Red October: btw the book is 105 MB! (Sedat's is 125MB) hope you can download it...
Nov-20-09
Premium Chessgames Member
  Open Defence: Hi, I have sent you the link! let me know if there are any problems downloading the file
Nov-20-09
Premium Chessgames Member
  zanshin: Thanks <OD/RO> I will try later today and let you know.
Nov-20-09
Premium Chessgames Member
  zanshin: <RO/OD> I was successful in downloading the file. I'll play around with it later. Thanks.
Nov-20-09
Premium Chessgames Member
  Red October: great! have fun!!
Nov-20-09
Premium Chessgames Member
  zanshin: I think I have the Pandora book working. It appears as another selection in the Aquarium drop-down. Thanks again.
Nov-20-09
Premium Chessgames Member
  Red October: yeah in Aquarium you need to go to Tree-Load CTG select the .ctg file :)

but if you see the book then you've obviously already done all that :)

let me know how it plays

I did find a few areas it needs tweaking today which I will probably work on over the week end

Nov-20-09
Premium Chessgames Member
  Red October: btw you need to set the book options to run deep and not exit like at move 20...
Nov-20-09   kormier: World Cup 2009
Nov-20-09
Premium Chessgames Member
  zanshin: <Red October: btw you need to set the book options to run deep and not exit like at move 20...>

I will look at that. Btw, I am quite new to using opening books. But between you and hms, I should figure this out.

Nov-20-09
Premium Chessgames Member
  zanshin: <kormier: World Cup 2009>

Thanks for the reminder <kormier>. There are three Filipinos playing, so I will be following closely. User: gmjoey has drawn Kamsky .. ugh! Tough draw.

Nov-21-09
Premium Chessgames Member
  Red October: what do you think of the book's name ? :)
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