Perfect Game and Twin Game

Submitted by sam_musil on Sat, 07/11/2009 at 7:25pm.

This week, I want to share a chess game with my friends that is just as rare as a pawn mate, the game that I analyzed last week.  This week, I want to analyze a "Perfect Game" that is the first one that I have played at Chess.com.  First, I want to define a "Perfect Chess Game" according to an article that was published in Chess Life back in the 1970's:

A perfect chess game is one in which one side mates or gains a winning position over the opponent and each move of the winning side stands up to Grandmaster analysis as being unsurpassed in strength,  i.e. as strong as any possible move after the defining opening variation position is reached. 

I have played 9 previous perfect games out of the thousands of rated games that I have played over the last 35 years.  Most of these were fairly quick mates, some of them following a prepared line that I had developed after post-mortem analysis of a previous game.  Here the Grandmaster analysis to verify my perfect game is provided by the Chess.com computer set at the 2500 level.

The second concept that I want to discuss called "twinning" was introduced in a Chess Life article about twin games where an A-player defeated a master in a tourney by following a line from the famous Nottingham Tounament of the 1930's.  His master opponent was unfamiliar with the Nottingham game and followed the moves of the losing player right up until the point of resignation!  This spectacular game was originally played by a GM, of course, but the A-player had been studying it and lucked out against the hapless master.  Twin games are also very rare because of the modern use of databases, but they still occur in OTB tournaments.  They also occur at Chess.com because the database for each opponent only contains their completed games!

This game, started in July of 2008, was played at 14 days per move and a second game, started on Feb.28, in a team match played at 3 days per move caught up to the first game at move 20 in early May.  I was winning both games at that time, so I continued to play the same line in both games.  Adrian deliberately follows the international team game that we were playing at 3 days per move since that game was much further along after May 9.  When he saw in early July that the team match game was lost, he tried to divert his play and blundered at move 23.  When he saw that his slip gave white an extra pawn, he resigned immediately on July 4.  Later he resigned the team match game on July 7.

Enough said, the following Ruy Lopez game is both a perfect game and a twin game and it gave me the championship of my section in The Strongest Tournament Ever!  Enjoy!

» posted in sam_musil's Blog
 

Comments:

by peterwaffles - 4 months ago
Fortress of Solitude Panama
Member Since: Jun 2009
Member Points: 619

read your profile, watched this game like a movie. Great game! But down with computers. The human mind is full of surprises. Sealed

by chris1011 - 4 months ago
new york United States
Member Since: Jan 2009
Member Points: 47
Well im not going to say that you are a bad chess player but i will say that it is not good to relly too heavily on an engine especially one as weak as the chess.com engine at some point you will have to think for yourself
by chess506 - 4 months ago
Plano United States
Member Since: Jan 2009
Member Points: 49

you were using fritz?!

by RC_Woods - 4 months ago
Nijmegen Netherlands
Member Since: Jan 2008
Member Points: 539

The chess.com engine tends to bump into its search horizon when making verdicts.  I don't know if this has changed the last months, but I've seen it question best moves and suggest solid question marks.

Of course, Fritz at a reasonable search depth (15 or deeper) would be much more apt to give solid suggestions. If the chess.com engine hasn't improved, its really only good for blunder checking.

That being said, I think you played a very good game! congrats!

by Phobetor - 4 months ago
Eindhoven Netherlands
Member Since: Aug 2007
Member Points: 1201

I agree with Steinar, but I'd like to add that I think it is ridiculous at all that all your "analysis" is based on computers and databases. How about some brains? I'm sure you've got some? Your "analysis" such as "Here 343 of 345 games in the master DB feature this obvious capture! ", or "Chess.com estimates that white is up 0.61 of a pawn after this move. ", or " Chess.com agrees that the knight move is best! " just makes me suspect you're a cheat who only has an engine and a DB to play his games. Why don't you give us some of your own opinions? Apparently after move 10 you were out of book; why not share your insights about WHY you made the moves, instead of saying that Fritz likes it? Or was that the reason you chose that move?

by Steinar - 4 months ago
Oslo Norway
Member Since: Mar 2009
Member Points: 80

I hereby sumbit my opinion that it's ridiculous to let a computer program, let alone a measly 2500-rated one (which is frankly pretty weak as computers go), judge if a game is "perfect" or not. Much more so in a correspondence game. How did you come up with this concept of "perfect" games anyway? In almost all games there are certain moves that are simply a matter of playing style, e.g. do you wish to keep a dynamic advantage, or convert it into a static one when given the chance. Could depend for example if you're an endgame expert or not. I'd love to give examples from your game, but I haven't really checked it out.

by sam_musil - 4 months ago
Marysville, Kansas United States
Member Since: Jan 2008
Member Points: 271

bobobbob ,

Obviously, you have to have luck to play a perfect game and you have to make some strong moves in difficult positions.  I have played about 10,000 rated games and I now have 10 perfect games, so they are very rare!

I could not believe it when Chess.com came back and said No inaccuracies, No mistakes, and NO blunders!   It may never happen to me again!

Here is the twin game given from the white move 23 position where the two games diverted because Adrian had already lost this faster game.  This game is not perfect because Adrian played better and avoided the slip at move 23.  Chess.com declared that I had two inaccuracies in the few different moves of this game before Adrian resigned!

Your chess buddy,  Sam

by bobobbob - 4 months ago
Dallas, Texas United States
Member Since: Feb 2008
Member Points: 701

Very nice game! I wish I could play a perfect game!

 

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