The four step double dozen progression is very effective. It also includes the once in a while perfect combination that kills it. I know. I tried to perfect a most unlikely pattern that could be the only way to kill it.
Consider this too: 1, 4, 13, 40 -- where you win one unit for every step of the progression. Example 1,2,3,4. BTW it's possible to lose this the very first time you play it. I did.
Consider this too: 1, 4, 13, 40 -- where you win one unit for every step of the progression. Example 1,2,3,4. BTW it's possible to lose this the very first time you play it. I did.