Even the ablest poker, blackjack, and craps strategists lose - on occasion, at least. But, luck is only one element.
Chance is another.
Chance in gambling can be managed in lots of ways. The simplest involve selecting games with low house edges and high odds of winning. A dimension of chance management that few folks fully fathom pertains to how the same total can be allocated on a single round. Roulette and craps offer the greatest flexibility for apportioning money among several simultaneous wagers. I'll illustrate with an example that ignores variations in odds, payouts, and other unrelated effects.