Which states, "In the Windows versions of Spider Solitaire, the scoring is calculated with a starting score of 500. One point is subtracted for each move; 100 points are added for each suit completed. This allows for a theoretical maximum score of 1256."
Professional gamblers are people who gamble professionally and make a living out of it. They rely on skill rather than luck to win and have full control over the time, money and energy they spend on gambling.