The D'Alenbert
system: (Money management betting systems, gambling
systems.)
Negative progression and insurance system.
This is a mixture of Martingale and Insurance systems.
Bets are raised one unit after each losing bet and lowered
one unit after each winning bet. The sequence and amount
raised or lowered can be varied to suit particular games
and odds.
* Negative progression betting systems: You
increase the bet when you lose. Require more capital and
usually employed to force a winning outcome following a
losing streak. (Nerve-wracking, very painful when you
lose. Avoid these systems if you can.)
* Insurance betting systems: You decrease the
amount of your bet when you win, usually following a high
initial bet or following short 'let-it-ride' progressive
wins. (Play it safe. A good compromise.)