From all games of rummy family Gin Rummy (and its closest variant Oklahoma - later when we will speak about Gin it will be considered as we speak about both games at once) stand out to have the most influence of mastery and skill on the result of the game than ordinary luck. As the result Gin Rummy is seriously considered as the source of additional (for some people even main) source of money income and earnings. Knowing strategy and tactics of this game in perfection will result only in increasing of earnings in this field at the expense of weaker opponents.

Some mathematical facts about Gin Rummy are listed below. Thought, they may seem too obvious but they found necessary basic knowledge of the strategies and understanding of the game in general:

• There are 15,820,024,220 possible ten card combinations in game.
• It is possible to complete 52 different three-card sets from the deck.
• It is possible to complete 44 different three-card runs from the deck.
• Chance to enforce three card run to four card run is double more than chance to enforce three card set to four card set, because in first case there two cards in the deck that can help us and in second case only one card.

Since there is only one deck with 52 cards in play in Gin Rummy every player with good memory can rather accurately define chances to reinforce own hand and predict chances of opponent approximately knowing his cards. Remembering of all cards from the pile is of critically importance in Gin Rummy just like in other games of rummy family. In Gin unlike Classic Rummy our hand can be enforced with twice as fewer cards, because in Classic Rummy there are two decks in play. There are also situations when our bindings are doomed because the only needed cards are dead in the pile (situations when three or four players in the game and the opponent on whom you are not in position burns your outs). As the result it is highly recommended to remember cards that are off in the pile and according to this information form you bindings in such way that they will have most chances to enforce to complete combination.

Besides all mentioned above play with one deck of cards have the other important feature - it will in any way reveal a lot more information about the hand to the opponents. But on the other hand every folded or taken card can give priceless information about the hands of the opponents to you. According to these facts there were formed some moves that can delude your opponents and make them think in wrong way. As the result we can submit the rule that you should take only those cards from the pile that will complete combination in your hand.

Most often rounds in Gin Rummy will be ended by just knock rather than with Gin. So, ability to do correct knocks and understanding of the sense of the move called Undercat will give every player advantage before his opponents. Number of Deadwoods with which you should or should not knock depends on several factors: style of the opponents' play, phase of the game, information about his current hand.