Author: Vincent Lejeune
Date: 09:52:29 12/16/02
Go up one level in this thread
after pasting the url here : http://babelfish.altavista.com/ ;) Interview of the Month Exclusive interview to the Programmer Per-wave Valfridsson Programmer of " the Ruffian " At the moment " Ruffian " is best engine of free circulation, in addition to being a Top to classic rate, to demonstrated to be almost insurmountable also in short times, really of the few that including obtained a to win to the commercial programs like Fritz, Shredder, Junior etc., " Ruffian " also are remarkable in the elaboration of plans, of attack, defense, he is also tactical and strategic, all this has been worth to him so that this including in the new version of CHESSASISTANT 7. (Their ELO borders the 2650 - 2690) [ to classic rate) the EXCLUSIVE interview I am made by electronic mail since she was in Sweden and I in PERU. For all the Friends of the Winboard step to transcribe it: Considered Per-Wave Valfridssion, First of all muchisimas thanks to extend your time to us for this interview. Hello I mean, that I hope to him to answer all the questions, hurts that I will not be able to read the interview, because I do not speak español:-(, but a warm greeting to all. 1. - Where it is at the moment and to that Per-wave is dedicated? I have 37 years of age. I was born in the northern part of Sweden. At the moment alive in Nynäshamn, a small, beautiful town and pleasantly located in the archipelago the Baltic Sea about 50 the south of km of Stockholm. I have been working like software programmer in a Telecom company near ten years. I have studied Mathematical, Computer science and Telecommunications in the Real Institute of the Technology and in the University of Stockholm. 2. - In the Chess always there are exceptional players, has some special one? The truth I do not have any favorite player. I do not follow the chess close by very but I always admire and enjoy to watch the spectacular games. 3. What motivated to him to write " a chess " motor? Everything began at the beginning of 1998. It interests much to me in the learning of the used algorithm search in the chess programs. Soon comenze playing started off against other motors and I learned that this Ruffian needs more and every time but knowledge of the chess to compete with other motors. Thus everything arose. 4. In what language the Ruffian program writes " "? [ is written " in " C a programming language very used ] with the advantage of to be transportable and the high performance of its versatility in mind. The Ruffián Has been compiled in a great variety of operating systems inclusively Linux, Mac, OS2, WindowsXp etc. In the version for Intel processors few routines have been added to assembler in the program. 5. In your opinion that differentiates " Ruffian ", of the rest of programs? It will have to say clearly what the difference between " Ruffian " and the other motors basically all motors are small then that I know they are based on the same algorithm of the search and differ only by extensions and how they evaluate the positions of the chess. In this indeed it defers " Ruffian "; in the extensions search. 6. Which is the basic characteristics of Ruffian " motor "? You would define it as a motor with attack style or perhaps a motor of positional style? I tried to give to Ruffian an attack style that also is attractive, but that tries to combine this, clear with some basic positional understanding. There are always positions where you must attack for being able to gain the game and are also positions where you need other strategies to be able to win. 7. It contemplates the motor typical characteristic of the game of the chess like the value of the pieces the factor of the security The way as the program considers the laborer last? The characteristics of the motor or are formed for some position, for example a last laborer or an attacked king. Everything can be evaluated, but always it considers the advantage material. In aim it is a combination of several terms of the evaluation that is used to find that " the best " movement is made or that it entails to the victory. 9. That type of positions according to the test that has made considers that the motor includes/understands better? The ruffian prefers the open positions where you have the complete archives of the program to use them and also prefers the open center where there are centralized and related laborers. 10. Read the tables of Nalimov in the end of chess? Yes, Ruffian leans in the tables of Nalimov in the end of the game. This is important for the Ruffian, because this obtains some extra knowledge in complicated end is only covered using the tables with end. 11. Chess Assistant 7 in its interfaces has an option of Multivariantes analysis? It supports the multivariant analysis " Ruffian "? Yes " Ruffian " has support for MultiPV " analysis " [ Multivariantes ]. If Ruffian is installed like a UCI motor and " MultiPV " is maintained by the GUI you you can analyze this option, in addition that also can be placed in any position. I think that this is one of the most useful functions of the module. 12. The motor more is optimized for short or long rates of game? It does not matter. I am not right to think that " Ruffián " is stronger in a particular control of time. 13. It can be used in the interfaces of ChessAsistant, Chess Academy, Chess Partner and ChessBase? Where it thinks that it is executed better? I do not believe that this is important really. " The Ruffián " has a quite complete implementation of both protocols as much Winboard and the as long UCI and as it is the GUI uses the protocol destined, within all this I do not see no problem for the program. 14. A somewhat difficult question, as you think that they are the 3 better programs of sale at the moment? Many laughter. Good really the best motors at the moment seem to be Fritz, the ChessTiger and Shredder. Fritz is the motor that he gives to Ruffian most of the problems. 15. What thinks to improve next in " " the Ruffian? There are many things that can be improved. The advantage that can give a book of openings, as to select the best continuation within the book, also the structures of the laborers, more knowledge of end and a more active style. This is to denominate few points. 16. Which is for you the weakest point of " Ruffián "? The Ruffian, like mayoria of programs, cannot see a long strategy in the time and loses the games by this sometimes, or perhaps some simple knowledge in the end and loses by this, and good the opening book is also weak. (Note of the Translator: Although this point facilmente is eliminated the power to use powerful books of openings of Chess Assistant, with more than 60 Mb, of positions or bigbook of Inforchess, or powerbook of ChessBase) 17. It participated in some championship of chess or perhaps in the championship of the world? Yes clear that if, but takes much preparation to participate in this type of matches, I hope at some moment for participating. 18. Somebody it aid in: some part of the design of the program the book of Openings, etc. I only obtained some aid in some test, and the book of openings is generated automatically of a PGN file. 19. " Ruffian " is very good in his depth and rapidity of the analysis of the game, how you you obtain this depth? Very important it is an aggressive called technique of null movement, therefore the pruning or cuts to generate an idea she is fast and he returns to order and to deepen. 20. - You consider the possibility of creating your own " GUI "? No, I do not think this. First of all at the moment I do not have time to write a GUI and second I am not sure that a GUI can write like which at the moment they are available for free use. Good Per-Ola single we have left desearte EXITOS in all your future projects as much familiar as professionally. Saludo of the equipment of Inforchess. Thanks for the interview, Per-wave Juan Carlos Malasquez Note: I want to thank for much the collaboration of the Dra. Doris Malasquez that gentily translated the interview for all in Compulibre Ruffian plays under interfaces Winboard and UCI including within Chess Assistant 7, with a tactical ability and power *** TRANSLATION ENDS HERE *** posicional importante.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.