(1) Multiple red ball numbers: Choose 7-20 numbers from red ball numbers and 1 number from blue ball numbers to form a bet with multiple betting numbers. For example: 010311223 3133 (7-20)+01.

(2) Multiple numbers of the blue ball: 6 numbers are selected from the red ball numbers and 2- 16 numbers are selected from the blue ball numbers to form a bet with multiple betting numbers. For example: 010311223 31+012 (2-16).

(3) Full-duplex: select 7-20 numbers from the red ball number and 2- 16 numbers from the blue ball number to form a multi-bet number.

In 2003, after 1 years of market preparation, the two-color ball was officially put on sale on February 6, 2003. "More big prizes, more small prizes", double-zone number selection, the characteristics of a blue ball attracted people's attention. After the prize pool exceeded 100 million yuan, the introduction of the "inverted Sanqi" lottery added more charm to the two-color ball and promoted its development. In the sales of 10 month in that year, the two-color ball completed 89 lottery draws, and the cumulative sales reached 2.829 billion yuan.

On June 23rd, 2003 10, the fund of the 70th prize pool of two-color ball broke through1000000 yuan for the first time. On the same day, the lottery center revised the relevant provisions of the rules of the two-color ball game and launched the "Inverted Sanqi" lottery; Results In June of that year, 65438+February 2 1, the single prize of the second prize of two-color ball reached 3594732 yuan.

In 2004, the two-color ball was launched in an all-round way, and the number of joint sales provinces increased to 3 1 unit, and the lottery frequency was increased, and the column of "Fucai Aid List" was launched.

In 2005, on the basis of perfection, the two-color ball began to pay attention to the construction of integrity. With the development of "approaching the two-color ball" activity, the lottery credit construction has been pushed to a climax, and the lottery credit system has also become the focus of social attention. On April 12 of that year, the first public delegation of "Approaching the Two-color Ball" composed of Shanxi public representatives walked into the scene of the two-color ball, and the "Approaching the Two-color Ball" activity was officially launched.

In 2006, the two-color ball put forward the concept of "lottery culture", and launched "Happy Holidays" on major festivals such as May 1 ST, November 1 ST, New Year's Day and Spring Festival to create lottery culture on holidays.