Many errors in the book make it difficult to understand and are losing the fluidity of understanding of place parties. I find it more poorly organized particularly in the ratings, and annotated paragraphs. Perhaps had he been wise to take his model left to increase the number of pages. Additional graphics were also welcome on the variants, the possibilities for reading without altering the main explanatory trunk. I am disappointed to the extent that, not having been able to browse, I discovered the purchase. I prefer by far "The failures guide" of Nicolas Giffard and Alain Bienabe, chess encyclopedia of over 1500 pages, more expensive, but much more pleasant to read, with very smart key patterns.
