![]() The printed text through the first two editions presents the combinations nine to a page with the classification information printed above. Both positions actually reached in play and theoretical positions that might have occurred are included. The combinations in the Anthology originate in games played from the mid-nineteenth through the early twenty-first centuries. They are also presented in three levels of difficulty: 1) warm-up, 2) intermediate difficulty, and 3) challenging. The Anthology of Chess Combinations presents 2709 positions. Hence, the first Combination in Informant 113 (270) is designated Ia-a combination with a mating attack involving annihilation of the defense. The motifs are a) annihilation of defense, b) blockade, c) clearance, d) deflection, e) discovered attack, f) pinning, g) demolition of pawn structure, h) decoy, i) interference, and j) double attack. The categories are I) combinations with a mating attack, II) combinations to reach a draw, and III) other. Chess Informant's classification scheme for combinations has three categories and ten motifs. For the most part, these are used in Informant publications, but not elsewhere. The editorial board of Informant also set out to classify endings and combinations. Most books and all leading database programs employ ECO Codes. Many players understand the code E05 as well as they do the words Open Catalan. Chess Informant's classification of openings (ECO) was so successful that it became the standard. The Anthology of Chess Combinations (2005) is a product of a long history of efforts to list and classify the tactical elements in chess. ![]()
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