| 0 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 | 27 | 30 | 33 | 36 | 2 to 1 |
| 2 | 5 | 8 | 11 | 14 | 17 | 20 | 23 | 26 | 29 | 32 | 35 | 2 to 1 | |
| 1 | 4 | 7 | 10 | 13 | 16 | 19 | 22 | 25 | 28 | 31 | 34 | 2 to 1 | |
| 1st 12 | 2nd 12 | 3rd 12 | |||||||||||
| 1 to 18 | Even | 1 |
Odd | 19 to 36 | |||||||||
Total -1
Thomas Donald's roulette system is based on increasing the bet when losing and decreasing the bet when winning. This strategy is simple and often yields positive results.
The essence of the Thomas Donald roulette system is that when playing roulette in a casino for "equal chances" (red/black, even/odd, 1-18/19-36), in case of loss, the current bet must be increased by 1 unit, and in case of winning at roulette, decrease by one unit.
Bets can change or be constantly in one place on the playing field.
It is not difficult to understand the advantages of this roulette system based on the following data:
- done 37 spins (starts of the roulette wheel)
- on the roulette wheel, "red" and "black" fell equally - "18" and "18" and once "zero"
We will assume that according to the strategy in an online casino we constantly bet only on "red" in roulette.
Let's draw a table of such a roulette game:
| Spin | Result | Bet | Winnings | Balance |
| 1 | red | 1 | +1 | +1 |
| 2 | red | 1 | +1 | +2 |
| 3 | red | 1 | +1 | +3 |
| 4 | black | 2 | -1 | +2 |
| 5 | black | 3 | -2 | 0 |
| 6 | black | 4 | -3 | -3 |
| 7 | red | 3 | +4 | +1 |
| 8 | red | 2 | +3 | +4 |
| 9 | red | 1 | +2 | +6 |
| 10 | black | 2 | -1 | +5 |
| 11 | black | 3 | -2 | +3 |
| 12 | black | 4 | -3 | 0 |
| 13 | red | 3 | +4 | +4 |
| 14 | red | 2 | +3 | +7 |
| 15 | red | 1 | +2 | +9 |
| 16 | black | 2 | -1 | +8 |
| 17 | black | 3 | -2 | +6 |
| 18 | black | 4 | -3 | +3 |
| 19 | red | 3 | +4 | +7 |
| 20 | red | 2 | +3 | +10 |
| 21 | red | 1 | +2 | +12 |
| 22 | black | 2 | -1 | +11 |
| 23 | black | 3 | -2 | +9 |
| 24 | black | 4 | -3 | +6 |
| 25 | red | 3 | +4 | +10 |
| 26 | red | 2 | +3 | +13 |
| 27 | red | 1 | +2 | +15 |
| 28 | black | 2 | -1 | +14 |
| 29 | black | 3 | -2 | +12 |
| 30 | black | 4 | -3 | +9 |
| 31 | red | 3 | +4 | +13 |
| 32 | red | 2 | +3 | +16 |
| 33 | red | 1 | +2 | +18 |
| 34 | black | 2 | -1 | +17 |
| 35 | black | 3 | -2 | +15 |
| 36 | black | 4 | -3 | +12 |
| 37 | zero | 5 | -4 | +8 |
Under this roulette system, we won 18 times, lost 19 times, and still remained in positive territory by 8 units.
It would seem that the «Thomas Donald» roulette system is a universal and the best strategy for playing roulette and with its help you can constantly win in an online casino.
However, this system has many disadvantages:
- it is considered that to play «Thomas Donald» roulette it is necessary to have a pot 3,000 times the minimum bet.
Those. if you play roulette in a casino with a bet of 1 dollar, your bank must be at least 3000 dollars, which is quite a lot for a roulette player.
- the «Thomas Donald» roulette system is designed for a constant, even odds on roulette. Only in this case the roulette strategy will give a result.
