Ключевые слова: activity, ai, arrangement, assembly, brain, brainstorming, challenge, challenging, close, cognitive, color, completion, complexity, concept, conundrum, design, difficulty, entertainment, finished, fun, game, games, geometry, hobby, incomplete, jigsaw, leisure, logic, minimalism, missing, pastime, patterns, pieces, play, problem solving, progress, puzzle, recreation, recreational, remaining, shape, skills, solution, solving, strategy, tabletop, task, teaser, thinking,