This is known as the cancellation system. Pick a series of numbers, say 1,2,3,4,5. Your first bet is the total of the two numbers on the end, or 6 units in this case. If you lose it, you cancel out the 1 and the 5, add the six to the end of the series and bet the 6 and the 2, for a total of eight units bet. Lose that one and you add the eight to the series, cancel the 2 and the six and bet a total of 11 (3+8) and so on. If you win, you proceed to the inside numbers until they are all cancelled out. Again, a loser, but an insidious one.

The player who's current go it is, is called the shooter. The shooter wins if he rolls a 7 or 11 and this is entitled 'Natural' and he loses if he rolls a 2, 3 or a 12. This is known as 'craps' and it is where the name gets its name from. Rolling any of the remaining numbers (4, 5, 6, 8, 9 or 10) is known as the 'point'. If the shooter achieves point on his first roll, he must roll again, if he achieves point again, then rolls again and rolls a 7 then he wins. If a 7 is rolled after the first point then the shooter loses and the dice are passed on to the next person. The next person will then become the shooter.