Author: P. Massie
Date: 13:50:01 05/15/02
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I believe the last two columns in the opening book display represent the probability of the move being played, assuming the "Fritz" column (for learning) is 0. My Fritz column is 0 - I'm using the book exactly as distributed. It is under the Hiarcs8 GUI, and I'm using it to play against myself, rather than with computers. In the Tchigorin line mentioned previously, 2 ... c5 has a 77% probability, so it will usually be played. But 2 ... Nc6 has a 9.2% probability, so it will show up occasionally. Also, in the Ruy Lopez line mentioned (1 e4 e5 2 Nf3 Nc6 3 Bb5 a6) the move 4 Bc4 is given a 17% probability of being played. This is the book as distributed, so my conclusion is that this book is designed for a wide variety of play against human buyers, rather than being designed for optimal strength against humans or computers. I would speculate Hiarcs8 would drop a LOT of ELO if using this book against equivalent opposition. Paul
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