Lyudmil Tsvetkov Move Choice in Chess (English Edition) áudio-livro
de Lyudmil Tsvetkov
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Descrição do livro
Chess engine Stockfish has been an inspiration for another peculiar book. Until couple of years back, such work would have been impossible, but now, thanks to a 4000 elos strong player and evaluator we are able to conjure up some quite nice comparisons. The aim has been to ascertain how good top human chess players perform. For the purpose I have selected 200 positions, stemming from the games of world champions - Botvinnik, Kasparov, Karpov, Anand, Tal, Morphy, Fischer, Carlsen, Capablanca and Alekhine. Then I ran one of the latest versions of Stockfish in multivariation mode, asking it to calculate and provide output for the best ten moves available in each position. The evaluation scores are given from the point of view of white, with positive scores meaning white stands on top, while negative scores meaning black stands better. The scores are in centipawns as usual, with 100 centipawns equal to one full pawn material, and the supposed winning margin set at 100 centipawns or so.
The evaluation scores are arranged in descending order of strength and meaningfulness, thus the first, top choice will be the best for the side to play, while the 10th best the weakest in the row of outputted moves. In chess, there are usually 30-35 possible legal moves on average, in any given position, but of course only a smaller number will be good and meaningful, reflecting the character of the position. In general, the top 10 could be regarded as nice moves, improving in some manner, or defending efficiently, the next 10 moves would comprise options that are somewhat inferior, perhaps positionally, while the next 10 moves could come down to straight bigger tactical blunders, like giving away a piece etc.
For the purposes of the present book we will be concerned with the top 10 moves, and we are checking how top human players perform. You want to tell you a secret? And it's interesting, because I think such experiments have not been made. Out of the 200 investigated positions, and I selected them as randomly as humanly possible, world champions primarily guessed the best move in only 69 instances, that means approximately only every third attempt was accurate, often human champions hit upon only 5th or 8th best choice, while sometimes they even are unable to strike one of the 10 best moves at all. That's whopping news, basically meaning top chess players do play quite weak in comparison with what Stockfish manages, and by default with what best chess play would look like. Surprised? Check carefully provided output.
What is more important, by studying the spread of moves chosen, we can take away significant information, allowing us to potentially become far stronger. It proves that chess is far more rich than we supposed until this point. Humans frequently tend to neglect quite good, decent choices, due to tactical blindness, strategic incompetence, or simply because we are hardwired to take a specific biased look at chess positions. As a matter of fact, most positions do hide moves, most humans would never consider, but it is them the most welcome and most robust continuations.
Every single position is analysed with Stockfish output, optimal variations some 5-10 moves long, with added explanations as to what these separate moves do, as well as other useful general considerations concerning evaluation and relevant board factors. Thus you can get a whole picture of what's going on, and if you are focused enough, and eager to delve into the specific output, you might certainly get quite some useful information, construct some mental patterns, allowing you to pick the best move easier, and with higher probability of success.
Wanna get as strong as Stockfish? Wanna beat the hell out of your opponents? Wanna shine and always pick the best move? Well, in such case you must simply read this book, sorry.
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