20 Jul '08 14:48>2 edits
Kepler recommended to me the book How to Choose a Chess Move by Andrew Soltis and I brought it and it is incredibly helpful (thanks Kepler). In the Chapter "Reality Check" he brings up a fascinating point and some very interesting data from two detailed studies of GM games published in Chess Informant.
First, the point:
The greatest limitation we regularly face in finding the best move is not lack of time. Nor is it our insufficient powers of visualization. It is the absence of a best move.
Next the data. He made two studies of 50 random games in separate Chess Informant dividing the moves into one of four categories:
Book - established opening or endgame theory
Forced - routine recaptures, mandatory responses to checks or other one move threats.
Best - Non-forced move situations in which there was one move which post-mortem analysis proved to be best.
Discreationary - Remaining positions; none of the choices are clearly "best".
The percentages of each type of move were (combining the two studies 😵:
Book - 29%
Forced - 6%
Best - 30%
Discretionary - 35%
Musing on these figures they certainly show that forced moves are relatively rare. What light does this info throw on previous threads regarding the differences between the play of an engine and that of strong human players?
BTW, the book has a Fischer quote I am quite fond of and consider to be some of the best advice I've ever read: Don't worry about finding the best move. Just try to find a good move.
First, the point:
The greatest limitation we regularly face in finding the best move is not lack of time. Nor is it our insufficient powers of visualization. It is the absence of a best move.
Next the data. He made two studies of 50 random games in separate Chess Informant dividing the moves into one of four categories:
Book - established opening or endgame theory
Forced - routine recaptures, mandatory responses to checks or other one move threats.
Best - Non-forced move situations in which there was one move which post-mortem analysis proved to be best.
Discreationary - Remaining positions; none of the choices are clearly "best".
The percentages of each type of move were (combining the two studies 😵:
Book - 29%
Forced - 6%
Best - 30%
Discretionary - 35%
Musing on these figures they certainly show that forced moves are relatively rare. What light does this info throw on previous threads regarding the differences between the play of an engine and that of strong human players?
BTW, the book has a Fischer quote I am quite fond of and consider to be some of the best advice I've ever read: Don't worry about finding the best move. Just try to find a good move.