Author: José de Jesús García Ruvalcaba
Date: 03:01:21 08/05/03
Go up one level in this thread
On August 04, 2003 at 18:36:27, Dann Corbit wrote: >On August 03, 2003 at 18:30:50, Lei , Shiann-Tzong wrote: > >> >>I can play a rated game with fritz 8 or junior 8 or Shredder 7 >>and set it to the lowest rating . and win it many times a day . >> >>If you have a rating over 2400 elo , you can post your human vs machine games >>here . >>If not , don't post it . >>I don't belive anyone without a 2400+ rating can defeat computer >>without anyone "Help" . >> >>According to Shredder 7 play in argentina , can support my view-point . > >Mathematically, you are wrong. > >If a player rated 500 points below a machine in real strength plays enough >games, he will win one of them. > >It may take quite a lot of games. But this is not an opinion, it is a fact. > Actually, as long as an entity (human or computer) does not play perfect chess, it can be beaten even by a random mover (choses at each turn one move randomly among the legal moves available). Of course the probability of a random mover defeating even a complete beginner is very low, it is easier to win the lottery by buying a single ticket. José. >This assumes simply playing games based on strength. If the human is clever at >learning computer weakesses or playing anticomputer chess, it may tip the >balance somewhat. > >Win expectency for a difference of 0 points is 0.5 >Win expectency for a difference of 100 points is 0.359935 >Win expectency for a difference of 200 points is 0.240253 >Win expectency for a difference of 300 points is 0.15098 >Win expectency for a difference of 400 points is 0.0909091 >Win expectency for a difference of 500 points is 0.0532402 >Win expectency for a difference of 600 points is 0.0306534 >Win expectency for a difference of 700 points is 0.0174721 >Win expectency for a difference of 800 points is 0.00990099 >Win expectency for a difference of 900 points is 0.00559197 >Win expectency for a difference of 1000 points is 0.00315231
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.