Hi! Nazar, See the example, assuming that I already won 1st 10 bets as follows: If using 1234, 1st 10 bets win = 10 units, 11th loss = -1 unit 12th loss = -2 units 13th loss = -3 units 14th loss = -4 units, total loss = -10 units Total win (+10 units) less total loss (-10 units) = 0 units If using 3456, 1st 10 bets win = 30 units, 11th loss = -3 unit 12th loss = -4 units 13th loss = -5 units 14th loss = -6 units, total loss = -18 units Total win (+30 units) less total loss (-18 units) = 12 units See the difference?? This is based on the assumption that you already won in the 1st 10 bets. Then you will be ask, what happen if I loss in the 1st 4 bets....... whoops! this is different stories....... This need Mr Ellis to answer. Thanks Tsen