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DcGentle
Member since Jul-30-12
My career as chess analyst started at the end of the nineties of last century, some years before the famous match of the World Team against Kasparov 1999, where I also participated a member of the Team.

Having studied computer science, I developed an early interest in the algorithms of chess programs, which first appeared in dedicated chess computers and later as PC software.

Using them in correspondence chess, I recognized the limitations of these programs, especially the early PC programs were only strong with short range tactics.

So already to the end of the nineties of last century I thought about writing a chess program of my own, but with different algorithms that would overcome the limitations of contemporary software.

Because I also felt that my own knowledge of chess was not up to the task, I more and more started analysing openings, and I began with the Morra Gambit, because it is tactical and estimated as theoretically weak, which it is, according to current theory. But I found that its theory can be improved, so that White is not forced to lose the tempo gained by the gambit, as with some decisive lines of current theory.

Since then I studied the French, the King's Gambit, the Blackmar Diemer Gambit, the Queens Gambit, and other openings.

But I also analyzed endgames, motivated by a friend who is a renowned chess study composer.

In 2012 I participated in the World Team Game against GM Akobian and studied the Caro-Kann, and later, in 2013, I examined the Larsen opening the same way.

To realize the motivation of writing a chess program from scratch, I wrote a paper about the weaknesses of current chess programs, that you can find online here:
http://www.zenpawn.com/chessblog/20... (PDF: http://www.zenpawn.com/docs/Chesspr...)

So chess is more science and art than sports for me, although also for me it's very interesting to watch the games of today's top grandmasters live. Here one can see the differences of human and computer chess.

Computer chess is not perfect chess, only the endgame tables, which have stored the moves of very few pieces remaining on the board at the end of the game, offer perfect chess today, but no explanations, why a certain move is the best.

And whether chess can be solved in our life time, remains to be seen.

<PGN viewers online>:

Simple, no variations: http://www.caissa.com/chess-tools/p...

General purpose, may not work with all browsers: http://chesstempo.com/pgn-viewer.html

General purpose (click <open>, insert PGN-text, select ParsePgn=4, click <ok>, result in new window) http://www.lutanho.net/pgn/pgnviewe...

Can also edit PGN-text: http://www.chess.com/analysis-board...

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

Chessgames.com Full Member

   DcGentle has kibitzed 11747 times to chessgames   [more...]
   Jul-28-14 The World vs Naiditsch, 2014 (replies)
 
...
 
   Jul-28-14 DcGentle chessforum (replies)
 
DcGentle: <This is simply NOT TRUE! More knowledge means more code. Which makes an engine slower.> Only with traditional evaluation functions, integrated into the alpha-beta (advanced) methods. This is based on Shannon's Minimax method, published 1950. This is stone age, it's high time
 
   Jul-25-14 notyetagm chessforum (replies)
 
DcGentle: <notyetagm>: Sorry for the late reply, but thanks for this mate on move 5. Amazing, what people can overlook, but not only people, also engines. I am busy with the World Team game, as you may know.... ;-) We'll see. Ģ
 
   Jul-20-14 Leko vs Caruana, 2014 (replies)
 
DcGentle: Position after <14. Bf4> [DIAGRAM] Black to move
 
(replies) indicates a reply to the comment.

Chess means Analysis

Kibitzer's Corner
< Earlier Kibitzing  · PAGE 40 OF 40 ·  Later Kibitzing>
Jul-27-14  truefriends: Don't think your analysis was very deep?!

Black has a better defensive setup.

For example... play continued: 32. Nc4 Rb8 33. Nd2 Qg5 34. Nb3 Be3 and blacks DSB is much better on e3 than f2 in your line.


click for larger view

35. Rc2 Ne7 36. Qd3 Qh6 37. Ba3 Kf8 38. Nd2 Kg8 39. Nc4 Bg5


click for larger view

Just to give an idea. Btw <Houdini 4> still thinks this position is a draw. But my <SF/K> team didn't ;-)

We are at move 50 now. And H has finally seen the winning setup for white. Can you spot the idea?! Which piece plays a crucial part in whites winning plan (starting from the last diagram).

Jul-27-14
Premium Chessgames Member
  DcGentle: <truefriends>: This was not a big effort of mine, I am busy with the WT game, we have a real winning chance there.

But as I see it, <12. Ba4> won't get voted in... *hmmm*

On the other hand, if I can show that this move has many winning lines, as it has already, who knows.

By the way, if you have a winning plan, congratulations!

as I said, I am currently extremely busy... but this may change this week, who knows.

Ģ

Jul-28-14  truefriends: <DcG> I don't see your lines in the AT. Maybe this can help?!

I don't know what to vote yet. Cause i haven't seen any convincing line yet.

Jul-28-14  truefriends: <DcGentle:

Strategy is a high level abstraction is chess. My engine will try to "decipher" chess positions in order to find the proper strategy and plans realizing it.

My program is much more complicated than current programs, which have a simple search compared to mine.>

This has been tried before. Just simply putting more "chess knowledge" into an engine will make it much slower and so weaker.

Jul-28-14
Premium Chessgames Member
  john barleycorn: <truefriends:...This has been tried before. Just simply putting more "chess knowledge" into an engine will make it much slower and so weaker.>

I remember Botvinnik's Pioneer which never played a game as far as I know and for which Botvinnik was seeking western hardware back in the 80's and 90's.

A fascinating topic and I would tend to agree with you. Chess is a combinatorial game and there either is a win for one side independent of the "strategy" of the opponent or it ends in a draw "by force". The speculation ever since is that it is drawish game. The limit in a combinatorial game is given by the huge amount of possible moves. The more and deeper the engines can calculate the better they get. Evaluation functions are just a subsitute for lacking calculation power, imo. I don't know how much calculating capacity these evaluation functions take from a machine.

Jul-28-14  truefriends: For example:

http://www.fzibi.com/pharaon/exacta...

See the answer of the first question.

<Most chess players tend to overestimate the influence of the chess knowledge in an engine strength. I believe that what makes a strong program is first the quality of its search (hashtables and null move management, sorting of moves, pruning, etc...), not the 'quantity of chess knowledge' that it includes.>

Jul-28-14  truefriends: < DcGentle: <truefriends>: By the way, if you have a winning plan, congratulations!>

My opponent just resigned on move 53!

The key was the bishop transfer Bg2-f1-e2-d3-c2-a4-c6.

Creating 2 passed pawns or winning d6.

Jul-28-14
Premium Chessgames Member
  DcGentle: <truefriends>: Good, honestly I would have tried somethng with the bishop as well.

By the way, my engine won't run along the game tree like all other current engines and can't be slowed down by more knowledge. To the contrary, the more knowledge, the better and maybe even faster my engine will be. It's a brand new method, not yet tried on chess.

Jul-28-14  truefriends: <DcGentle: <truefriends>: To the contrary, the more knowledge, the better and maybe even faster my engine will be.>

This is simply NOT TRUE! More knowledge means more code. Which makes an engine slower.

Jul-28-14  truefriends: <Strategy is a high level abstraction is chess. My engine will try to "decipher" chess positions in order to find the proper strategy and plans realizing it.>

<It's a brand new method, not yet tried on chess.>

Also NOT TRUE! This also has been tried before.

Jul-28-14
Premium Chessgames Member
  nimh: Have you tested your engine against current top ones at various time controls? Positionally strong engines tend to perform better at longer time controls. Des your engine also show this?
Jul-28-14  truefriends: <Because I also felt that my own knowledge of chess was not up to the task, I more and more started analysing openings, and I began with the Morra Gambit, because it is tactical and estimated as theoretically weak, which it is, according to current theory. But I found that its theory can be improved, so that White is not forced to lose the tempo gained by the gambit, as with some decisive lines of current theory.>

According to current CC theory the Morra is a DRAW. Or have you found anything better?

Jul-28-14
Premium Chessgames Member
  DcGentle: <nimh>: There is no prototype yet to test with. I don't start programming before the algorithm is not finished, a contractor cannot build a house if there are only parts of the plans for the house available ;-)

<truefriends>: Haven't you seen my positional queen sac in the Morra? This is new, not for me, but for the theory. (DcGentle chessforum)

There even is another positional queen sac somewhere, but I'll keep this for myself for now.

Jul-28-14
Premium Chessgames Member
  DcGentle: <This is simply NOT TRUE! More knowledge means more code. Which makes an engine slower.>

Only with traditional evaluation functions, integrated into the alpha-beta (advanced) methods.

This is based on Shannon's Minimax method, published 1950. This is stone age, it's high time for something new.

Jul-28-14  truefriends: <<truefriends>: Haven't you seen my positional queen sac in the Morra? This is new, not for me, but for the theory.>

Too bad this was already played on the (chessbase) playchess server before you published your analysis.

And it's also the first choice of Komodo and Stockfish.

BTW it even isnt a Queen <sac>!

< White has got only rook and knight for the queen and a pawn.>

Queen = 9
Rook = 5
Bishop/Knight = 3
Pawn = 1

So Queen (9) = Rook (5) + Knigth (3) + Pawn (1)

Jul-28-14
Premium Chessgames Member
  nimh: I see, your programm will be, as a whole, modeled after requirements of positional chess, instead of being like a formular where one simply fills in blanks with a pencil. Am I right?
Jul-28-14
Premium Chessgames Member
  john barleycorn: <DcGentle: <This is simply NOT TRUE! More knowledge means more code. Which makes an engine slower.>

Only with traditional evaluation functions, integrated into the alpha-beta (advanced) methods.>

All good and fine. We need to see your engine play. When is the estimated inauguration?

Jul-30-14
Premium Chessgames Member
  cormier: any news on 11.h3 Bh5 12.Ba4...
Aug-04-14
Premium Chessgames Member
  notyetagm: Topalov vs Vallejo-Pons, 2014

Wow, what a *fantastic* game by Topalov. He was a simply unbelievable understanding of <MATERIAL IMBALANCES>.

Aug-11-14
Premium Chessgames Member
  hoodrobin: Hi <DcGentle> you ok? If you're not on vacation the Team miss you!
Aug-13-14
Premium Chessgames Member
  arrvin: <DcGentle> I hope things are OK with you. The team misses your comments and analysis.
Aug-24-14
Premium Chessgames Member
  mistermac: I, too, hope you are OK. Many in the Team miss you, but apparently not all.

Without wishing to enter into a cotroversy, I will say that you are probaly more sinned against than sinning.

But, there are some big egos on this site, I will say that!

Mine is also, but it does not come out in my Chess discussions, as I know my severe limitations at the Game.

Aug-26-14
Premium Chessgames Member
  notyetagm: B Bok vs R Rapport, 2014

<wordfunph: simply impressive.>

Yes, a 2587-rated player (Bok) completely missed the elegant <MATE IN 3> beginning with 24 Bc5xRf8? Qf5-h3+!!.


click for larger view


click for larger view


click for larger view

Aug-26-14
Premium Chessgames Member
  parisattack: <mistermac: I, too, hope you are OK. Many in the Team miss you, but apparently not all. Without wishing to enter into a cotroversy, I will say that you are probaly more sinned against than sinning.

But, there are some big egos on this site, I will say that!

Mine is also, but it does not come out in my Chess discussions, as I know my severe limitations at the Game.>

I as was told early o,e if you play chess seriously you are not a normal personality...egos of all flavors, prima donnas, just plan strange. An unholy lot we are. Not a place to cast stones...

I've read enough of <Dcs> writing, theory on his new paradigm engine, and at that level it sounds promising, indeed. "He's on to something!" But how is the rubber actually going to hit the positional road remains a mystery. Some examples, specific paradigm,,,even some code snippet would be good to see soon to keep the drive alive. But such things take a lot of time unless he commands a team of programmers. The devil in the details, for sure. If hes not here, then hes working on his engine and perhaps more specific output if even of a sample nature may come forth in the weeks to months ahead.

Aug-27-14
Premium Chessgames Member
  mistermac: Well, <parisattack>, thank for your thoughts on <DcG> and Chess. As for the geat man's new Chess Machine, so far his paradigm ain't worth a dime. But, <JB> seems to have got to him, and we are fighting Naiditsch on our own. Any four will have to have what it takes.

Drive you in Seine, would it not? Like it did to Jack Lemmon.

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