![]() 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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