To begin to unlock the 51 Bonus, you must first make a pure sequence out of the 51st & 52nd cards in a standard deck, the 5 of Hearts and 1 of Spades. Other Difficulties and Techniques. Players may also neeek rummyd to meet additional secondary requirements in addition to this primary condition, like finishing a specific number of sets or sequences in a predetermined number of moves. Players must carefully consider their moves and make calculated decisions in order to meet the requirements for unlocking the 51 Bonus, which adds an additional layer of strategy & challenge to the game. Planning Strategically & Adapting.