The 1-3-2-6 betting system is similar to the Paroli system as it is a positive progression system which depends on your winning 4 in a row. The way it works is a little more complicated than either the Paroli or the Martingale system but it does offer some very definite advantages. The way it works is basically this. Your first bet would be 1 unit,your second bet would be 3 units your third would be 2 units and your last bet would be 6 units. After which time you would start the sequence over with 1 unit. The unit can be any amount you want from $1 on up. This system works best with games that have near even odds. I would also suggest that before you risk any real money using any gambling system that you practice,practice and practice some more. Most of the online casinos offer play for fun accounts.