Ключевые слова: background, brain, business, challenge, conceptual, connect, copy, creative, design, development, difficulty, education, flat, game, group, hobby, idea, incomplete, intellectual, intelligence, iq, jigsaw, lay, learning, logic, logical, match, missing, object, pattern, pieces, play, problem, puzzle, rational, shape, solution, solving, space, strategy, success, symbol, task, text, thinking, top, toy, view, white, yellow,