To use the Martingale betting system, you are required to first place a one-unit stake bet, so if playing on a Roulette table on which the minimum bet is just 1.00, then your initial bet is 1.00 on any of those even money paying betting opportunities. If the first bet you place is a winning one, then you have locked in a profit of 1.00 and on your next bet you simply place another 1.00 bet. However, each time you experience a losing spin you are then required to double the value of the last bet you placed. So, your first bet will be 1.00 in our example, and if that loses your next bet will be 2.00, if that loses then your next bet is 4.00. As soon as you do achieve a winning outcome, the way this system has been designed is that you will recover all previous losses and will still make a 1.00 profit.