Mar 20, 2017
Testing roulette system

Testing Roulette Systems - The Havana System

The system Havana is a relatively unusual gambling system. It is based on the betting of certain numbers within one dozen. First of all, you have to determine the value of the initial unit and distinguish low units from high units. The value of the high unit is two times bigger than the value of the low unit (as following: the low unit = 1 unit, the high unit = 2 units).

You start the game by choosing one dozen and you bet on all numbers within this 1st 12 by one low unit (so altogether you bet 12 units). If you do not hit one number from 1st 12 either, you continue playing and keeping still the same bet sizes. If you hit then you proceed with following rules:

  • If you hit a number, which you have bet the low unit on, this low unit is substituted by the high unit and at the same time you take away any low unit from any other number at the opinion of you (for example gradually you take units from the lowest number).
  • If you hit a number with the high unit, the high unit remains on this number and again you take away any low unit from further numbers/
  • If you hit an uncovered number (thus this number from which we have taken the high unit), you put the high unit on that number and again you take away the low unit from somewhere else.

It practically means that during the game numbers are occupied by high units and low units are eliminated. The round is finished at the moment when all low units are taken away and there are only high units and uncovered numbers on the table. Then you bet again on all numbers within this 1st 12 by one low unit and the game starts from the beginning.

It is recommended for this system to use of a linear progression, so after each losing series, you can increase the value of the low unit by one (and value of the high unit by 2) until you again make a profit.

What do the Statistics say?

This was a really difficult issue to estimate what progression the system would have. Theoretically, this system was supposed to work...but further conclusions were made after the practical testing. We have attempted to design a progression and do a test simulation per 25.000 spins firstly without using a series progression as follows:

As you could see, the system was not successful without using the progression. We observed a typical downward trend and the average loss oscillated approximately around the value of 10.000 units per 25.000 spins. Therefore it was necessary to apply a series progression and we again tested the system as you can see on the following graph:

Unfortunately, the progression remained the same as the system headed downward and went completely and drastically below zero (it even reached values of millions of units above zero per 25.000 spin). So this was really horrible finding and means that losing series achieved dominance over winning series. We tried to analyze the sample of series with using no progression in detail.
Series Profit Series Frequency Frequency in % Total Profit
200 up to 300 16 1.62% 3 602
101 up to 200 132 13.39% 18 567
1 up to 100 341 34.58% 17 077
0 up to -100 301 30.53 % -13 661
-101 up to -200 151 15.31% -22 270
-201 up to -300 33 3.35% -8 029
-301 and less 12 1.22% -4 262
Total 968 100% -8 976

As you could see, the losing series again achieved dominance over the winning series. The losing series resulted in a loss and reached values of 100 and more units. Therefore this system went unambiguously below zero and is unplayable in this form. It requires further work and improvement if it is to be usable in the long term.

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