Ключевые слова: abstract, background, brain, business, business concept, business problem, cardboard, challenge, compatibility, concentration, concept, connection, crowd, cutting, difference, different, difficulty, game, idea, jigsaw, jigsaw puzzle, meditation, missing, mix and match, notice, object, observe, piece, playing, problem, progress, puzzle, red and white, red and white puzzles, red jigsaw, resolve, shape, skill, solution, solve, standing, succes, table, team, teamwork, test, thinking, training, white, wooden,