The pockets numbered 1 to 36 alternate between black and purple, while the 0 and 00 are each green. Some wheels have curved pockets that make it tougher for players to predict the place the ball will land. Using this information, it's potential to test numerous betting systems for roulette. However, you want to keep in thoughts that there is no guarantee that any system will work. The cause for this is that the home edge for a given guess sort will at all times be the same, regardless of how many times the quantity seems in a row. For instance, if you guess on black, the chance of shedding is 18/37, which is the same irrespective of what number of instances purple has appeared in a row.