Author: Russell Reagan
Date: 19:42:39 11/10/03
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On November 10, 2003 at 21:29:15, Mike Byrne wrote: >It's not one specific move - it 's the pattern of moves - playing the exact same >moves as a program over a fixed number of moves. In real life, that does happen >over and over again in sequential games. It's the same method that a chess >program clone is identified. Computers will play the same move over and over >again in the same position. It's identifiable and repeatable- in fact every >program gives off a "signature" in every game that can be identfied. No human >will play 8 moves in a row in exact sequence of a program and then do that again >in the next game. Humans, GM or not, do not play like computers in that type of >sequencing (carbon copy 8 moves in a row non/opening/non end game - essentialy >random positions ) and then do it again the very next game. It may happen once >in a long while, it will not happen in back-to back games. That sounds good, but I have to disagree based on factual evidence. I decided to test out your theory, because it didn't sound logical to me. I assumed a player playing the same moves as the computer would be very common. So I downloaded a PGN from a tournament (just the first one I could find at TWIC, http://www.chesscenter.com/twic/ecc03.pgn), and tested a few games. Here are the results so far. Analyzed with Ruffian 1.0.5 Game 1: P. Svidler - S. Cicak P. Svidler statistics 41 moves played Different move: 17 times Streak of 1: 7 times Streak of 2: 6 times Streak of 3: 5 times Streak of 4: 4 times Streak of 5: 2 times S. Cicak statistics 40 moves played Different move: 21 times Streak of 1: 8 times Streak of 2: 3 times Streak of 3: 3 times Streak of 4: 2 times Streak of 5: 1 time Streak of 6: 1 time Streak of 7: 1 time Game 2: K. Fahrner - S. Cicak K. Fahrner statistics 41 moves played Different move: 21 times Streak of 1: 11 times Streak of 2: 5 times Streak of 3: 4 times S. Cicak statistics 40 moves Different move: 23 times Streak of 1: 7 times Streak of 2: 3 times Streak of 3: 2 times Streak of 4: 1 time Streak of 5: 1 time Streak of 6: 1 time Streak of 7: 1 time Streak of 8: 1 time These were the FIRST TWO GAMES that I tested, and in the first two games of the same event we have the same person with a streak of 7 moves and 8 moves that the computer would have recommended, had he been analyzing the game while playing online. Maybe if I had tested thousands of games and only found two of the same person, I would believe your theory, but these were the first two games I tested. Either you're wrong, or something very unprobable happened ;-)
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