#chess

• Alekhine — The surname of Alexander Alekhine, a legendary Russian chess player, later naturalized in France, who became the fourth World Chess Champion. Recognized for his highly aggressive, imaginative, and complex style of play, his name was structurally immortalized in modern chess theory through a famous opening (Alekhine's Defense), characterized by early provocation of the opponent's pawns.
• Audio chess — A digital system, software application, or game variant designed to allow chess matches to be played through sound commands and speech synthesis, primarily used to make the sport accessible to blind or visually impaired individuals. Moves are announced aloud using standardized coordinates, removing the need for visual interaction.
• Azurite — A natural basic copper carbonate mineral with a monoclinic crystal structure, characterized by an intense, glossy, vitreous blue color and a famous chemical instability, often transforming into malachite under the influence of moisture. This structural mineral is found in the oxidation zones of copper ore deposits, historically used as a fine paint pigment and currently as a semi-precious stone for jewelry or decorative objects.