Ключевые слова: abstract, assemble, brain, business, concept, conceptual, difficulty, fit, game, hole, icon, idea, incomplete, jig, jigsaw, jigsaw pieces, jigsaw puzzle, join, last, making, match, missing, part, patience, piece, playing, precious, problem, puzzle, red, red background, resting, shape, simple, solution, solve, solved, struggle, success, support, task, toy, unfinished,