 To simplify the calculation of scores the cards are grouped in threes, their rounded-up values above are totalled and 2 points deducted.So a King, Jack and pip card are thus worth (5 + 2 + 1) – 2 = 6 points.If a single card is left over, 2/3 points are deducted from its rounded-up value; if two cards are left, 1 1/3 points are deducted.