Here are some basic tips on playing in ten-person single table tournaments, which are commonly called "Sit and Gos" or "SNGs". I recommend playing Sit and Gos if you do not have a lot of time to play online. You can win as much as five times your buy-in in less than an hour. Most SNGs pay prize money to the top three places with 50% of the prize pool going to the winner. SNGs are also a great way to gain experience playing short-handed.
Early Levels
 There are two philosophies about what style you should be playing 
          in a single table tournament: passive or aggressive. When I first started 
          playing $10 SNGs on Party Poker a year ago, my buddy the Poker Penguin 
          suggested that I avoid playing any hands other than AA and KK in the 
          first two levels. It is an ultra-conservative strategy. You are choosing 
          to fold marginal hands early and avoiding having to call big bets. You 
          are essentially electing to wait for monster hands (and playing them 
          strongly) and not moving all-in unless you have the absolute nuts, while 
          the other players knock themselves out early. Survival is the key in 
          the first three levels. Playing against seven or eight players early 
          on increases your odds of winning and you are in a better position to 
          make the money.
           
          The other philosophy is to play hyper-aggressive and see as many flops 
          as you can in the first level while the blinds are cheap. You are also 
          looking to double up as soon as possible and aggressively push all-in 
          with high pocket pairs preflop or with big draws on the flop in a multi-way 
          pot. You will see a lot of maniacs who will try to double up on the 
          first hand with any two cards! It's an all-or-nothing strategy for them 
          and they usually lose. However, if you double up very early, you will 
          be in the best position to win if you play your big stack right. 
           
          Pay attention to the players at your table. You will have to size them 
          up very quickly. Find out who the best two players are. Then find the 
          two weakest players. Keep your eyes on all four. Weaker and inexperienced 
          players are harder to bluff. And better players will try to trap you 
          and mix up their play. Never slowplay (unless you flop the absolute 
          nuts) or try to trap in the early levels.
Middle Levels
 There was a stretch when I never played anything out side a Group 
          1 hand (AA, KK, QQ, AKs) before the table was reduced to six players, 
          and that's when I'd shift gears. I would always be close to making the 
          money, but I never had enough chips to be a real contender. I had to 
          rethink my strategy. Selective aggression is important as the blinds 
          increase. You are going have to steal blinds in order to survive. You 
          have to win small pots and avoid calling short stacks that push all 
          in when you have marginal hands.
           
          Level 4 is the most important stage of any single table tournament. 
          At least a few players are knocked out with one or two big stacks and 
          a couple of short ones. If you are in the chip lead, you want to use 
          your stack size to bully people out of pots. If you are short stacked, 
          then it's time to double up. The standard measuring stick for a short 
          stack is 10x the big blind. I use 8x myself, but 10x is quicker and 
          easier to calculate. You need to get lucky and beat a superior hand 
          at some point to win any tournament. Pick a hand, hold your breath, 
          and push.
Short-handed and Bubble Play
 When it gets to four players, you will find that the better players 
          will win regardless of their stack size. The key to short-handed play 
          is aggression and position. Use both to your advantage. You will have 
          to bluff to pick up blinds (and antes if applicable) in order to survive. 
          You will have to loosen up your starting hand selection and hit flops. 
          By then you should have a feel for the remaining players and go with 
          your hunches based on the information you have gathered on them. You 
          will have to win all your coinflip situations (example... 77 vs. KQ 
          or AK vs. 99) in the later rounds in order to make the money. Your overcards 
          will have to beat small pairs and vice versa. 
           
          When it gets to the bubble, players will tighten up to make sure they 
          make the money and avoid playing marginal hands and fold to any raise 
          pre-flop. That's the time to be aggressive and add to your stack. You 
          are also in a better position to slowplay if you flopped a set or straight 
          or smooth call any raises preflop with big pocket pairs. 
Summary
 To summarize, you should play smart and be patient in the early 
            levels. Increase your aggression later in the tournament by stealing 
            enough blinds and pots. Keep your opponents off balance by mixing 
            up your style of play and hand selection. That is crucial. And lastly, 
            avoid falling into any betting patterns especially post-flop. Some 
            of your more savvy opponents will quickly pick up on your patterns 
            and use that information against you. 
             
            The smaller buy-in SNGs on Party Poker are loose and wild. It's more 
            like gambling than playing poker. Players will move all-in with anything 
            and they bluff too much. The quality of play is better at the middle 
            levels with a nice mix of good players and a few loose players. I 
            usually play $30 and $50 SNGs on Party Poker and Empire Poker, where 
            I discovered that patience and selective aggression pays off in the 
            long run.
Basic strategy for Sit and Go Tournaments
Hand Selection In SNG Tournaments ? Part 1, Early Play
Hand Selection In SNG Tournaments ? Part 2, Middle Play
Hand Selection In SNG Tournaments ? Part 3, In the Money


