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Chess Combinations Encyclopedia is a fundamental program on chess tactics including more than 4000 training examples and exercises classified by more than 100 tactical methods and motifs. The complexity of the exercises grows inside each theme from beginner to advanced chess player. Individual ratings are calculated on the basis of the user's performance and statistics are gathered for each user. When studying each theme step by step, you can master all the tactical methods and improve your play drastically.


Specifications:

Languages: English, German, French, Spanish and ItalianCD, printed manual and plastic boxSystem Requirements:Win 95/98/ME/2000/XP, No additional software required


Encyclopedia Of Chess Combinations 6th Edition Free Download


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The book contains 3,001 classified and annotated combinations from all-time tournament practice. It will be appreciated by anyone who wants to raise their level of play or who wants their students to be fully primed for competitive tournament chess.

I am rated somewhat above 1900 at chess.com rapid. I dont play that much, but I think I could easly be 1950-2000 at rapid. At blitz, however, I am about 1850-1900 (peak rating of 1976) at chess.com. I am interested in buying a chess book on tactics. Which one do you recommend?

For over 20 years we have been serving the chess community. We pride ourselves on stocking a full range of products for chess-players, including boards, sets, books, videos, DVDs, software and computers. With fulfillment centers in Florida and London, England, we serve chess-players from all over the world. All our staff play chess and we are always happy to advise you on the products that will best suit your needs.

Artificial Intelligence (AI) has produced computer programs that canbeat the world chess champion, and programs with which one can conversein natural language. Our experience shows that playing chess andcarrying on a conversation are activities that require understandingand intelligence. Does computer prowess at chess and conversation thenshow that computers can understand and be intelligent? Will furtherdevelopment result in digital computers that fully match humanintelligence? Alan Turing (1950), one of the pioneer theoreticians ofcomputing, believed the answer to these questions was "yes". Otherworkers in AI have thought that computers already understand at leastsome natural language. Beginning in 1980, philosopher John Searleintroduced a short and widely-discussed argument intended to showconclusively that it is impossible for digital computers to understandlanguage or think.

We have developed methods for comprehensive comparisons of complex cancer treatment strategies for metastatic cancer. A strategy is not a specific treatment sequence, but rather a data-driven method for planning treatment sequences. A strategy may suggest which therapies to utilize at treatment initiation, when to switch therapies, when to use high dose monotherapy, and when to use combinations. Strategies individualize treatment sequences based on both static and dynamic features. The current dominant precision medicine paradigm is an example of a strategy, but it is not the only possible one.

In light of the importance of combinations [42], we asked whether ALTO could be useful in a setting where only sequential monotherapy was allowed. We found (Table 1, Additional file 1: Table S2, Table 3, and Additional file 1: Table S4, Supplementary Results) that the ALTO-SMO strategy gave overall comparable performance to single- and multi-step heuristics that allowed combinations. In the two drug system, ALTO-SMO gave shorter median survival but higher cure rates.

We note that the mean survival for both ALTO-SMO and ALTO will be underestimated due to censoring of these additional cured patients when the simulation is truncated at 5 years. This suggests that long range planning may be at least equally important as combinations in the treatment of cancer. The best results occur when long range planning, combination therapy, and high dose monotherapy are all utilized.

We have shown that longer term planning leads to additional improvements in outcome, which, while small on average, are of great importance for a subset of individual patients. In particular, there is a significant increase in cure rate, an outcome highly valued by patients. The popularity of high dose chemotherapy protocols with bone marrow transplantation demonstrates that patients will actually risk mortality from therapies in order to enhance their chance of a cure. However, applying long range planning to current therapies does not appear to be associated with any downside risk based on the results of this study. The average benefit of long-term planning is likely underestimated in the study in that survival of cured patients is truncated at 5 years (the length of the simulation). The relative frequency of different parameter combinations, representing different virtual patients, is unknown, and thus all parameter combinations were weighted equally. Thus, the magnitude of benefit observed in this study may differ from the benefit observed in a real population. The lack of downside risk does robustly indicate a net benefit, however. Further work is needed to identify the subset of patients who benefit from long range planning, increasing the average benefit further according to the principles of precision medicine.

We agree with several key conclusions from these authors. Combinations are an essential component of successful cancer therapy in our view. When it is possible to give the desired combinations in full dose, this is likely to be superior. Sequential monotherapy by the current personalized medicine strategy is clearly problematic. A sufficient number of non-cross-resistant agents or combinations are required to deal effectively with the diversity and dynamic nature of cancer. However, our work also differs in several important respects, and ultimately leads to a much more complex recommendation involving rapidly interleaved pulses of full dose monotherapy and combinations specifically tailored to individual population structure and dynamics.

Reviewer comment: Are the simulation inputs or results weighted according to relative frequencies of different parameter combinations? If not, then although the results are meaningful, it should be clarified that they do not suggest population outcomes for this set of virtual patients.

Author response: we agree with this comment and have qualified the conclusions appropriately. The relative frequency of different parameter combinations is unknown. Importantly, since few patients appear to be harmed by the proposed approach, the conclusion that the approach represents a net improvement in cure rate is probably robust. However, exact quantification of the magnitude of the effect is confounded by the issue raised in this comment.

Author response: Operationally, it means that no single molecular alteration conferring resistance to both agents simultaneously is known. Mechanisms of multiple resistance are known to exist for many classes of drugs, including those that work by different mechanisms. Like many features of this approach, increasing oncology knowledge will benefit this aspect. In vitro, one can treat with very high dose combinations and look for emergence of resistance in a forward mutation assay. It will not be easy to find truly non-cross resistant drugs. We have added some language to the introduction concerning these points. ff782bc1db

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