Despite massive strides in computer technology and in particular video graphics, contemporary video poker machines are little different from their primitive forebears. Video poker fans are keen that their game is kept as ‘traditional’ as possible, and video poker has not developed in the same way that online slots games have evolved to be feature-rich monsters.
Once I hit two 4 of a Kinds back to back. The probability of hitting it once is 0.24%. The chances of hitting it back to back are 0.24%2 = 0.0006%, or 1 in 179,000. That's four times less likely than hitting a royal flush. And I would have preferred the royal! (By the way, purists will note that after you've hit a 4 of a Kind, the chances of hitting another four of a kind is just 0.24%, not 0.0006%, but I'm considering the probability of getting two back-to-back before I get the first one.)
Video poker is a very volatile game, about four times as much as blackjack. In any form of gambling, short-term results mostly depend on normal mathematical randomness (what some might call luck). However, in the long run, results mostly depend on skill. If you play a game with a return of 100.76% perfectly, that does not mean that you will have a 0.76% profit every time you play. The 100.76% is an EXPECTED return. Much in the same way, if you flip a coin ten million times, the expected number of tails will be five million, but it is unlikely you will hit five million on the nose. Actual results will vary significantly from expectations, but the more you play, the closer your actual return percentage will get to the expected return.
Think about how normal video poker play goes. After depositing your initial amount, you start playing hand after hand. Most often you lose your bet. The next most frequent occurrence is to simply get your bet returned by hitting a high pair (or sometimes two pairs) that returns 1 for 1. You will also hit other higher paying but less frequent hands. In each case, however, unless you hit a royal flush or other very high paying hand such as four aces with a kicker, the amount you win is not enough to cash out and be considered a good win for the day. Instead, all of these lesser wins are really just extra money that allows you to play a few more hands in order to try to win the jackpot sized hand(s).
All possible resulting hands and pays for a hold of just the ace of hearts must be calculated. The same must then be done for a save of just the 3 of spades, the 4 of hearts, the 5 of clubs, and the king of diamonds. Then the same must be done for each possible hold of two cards. Then the same is done for holds of three cards. The same is done for holds of four cards. Finally the return for a hold of all five cards is calculated. The returns are then compared in order to select the best possible hold (in terms of money returned). The results for each of the over two and a half million possible hands are summarized in order to develop the strategy.