Ключевые слова: abstract, achievement, analysis, blue, business, challenge, chance, checkmate, chess, chessboard, clean, competition, competitive, concentration, contest, dark, decision, design, figure, flat, goal, icon, idea, intelligence, king, leader, leadership, metaphor, motivation, organization, pawn, piece, plan, play, poster, process, professional, progress, shadow, sign, solution, strategic, strategy, success, symbol, tactical, tactics, think, vision,