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One table Tournaments Sit-n-Go, known as the Double-up (another name – double-or-nothing) and the players simply called «double», or DON appeared in the online poker is relatively recent. But almost immediately gained popularity.

What is the secret of the success of «double»? Apparently, in that they attract a bad player, and good, both beginner and established gaming experience. The motives of all observed different types of players, but they all, without exception, contributed to the attractiveness of «double».

Prize structure of these events suggests that exactly half of the participants receive prizes, with prize money is divided equally among the winners, regardless of the amount of chips with which they finished the tournament. This may be one piece, and almost all the chips tournament – is still at the table half of the participants will redouble their tournament fee, and the other half left with nothing.

Thus, the prize structure of «double» is such that it creates a favorable environment for players of any type. Players with low skill, and often simply not enough self-assured, can feel «double» much more comfortable than conventional SnG. After all, their job a lot easier – just not to lose their chips before the half of his rivals will be broken out of the game.

In turn, the players with good skill can be learned from the «double» no less useful than other types of tournaments. On the one hand, the lack of differentiation of the prize fund in the «double» ROI objectively reduces even the strongest player, and reduces significantly.

On the other hand there is no need to play in the drink-zone, fighting for the highest place in the tournament, played at the same time allows for a much larger number of tables and a much lower level of the game of stress and attention. This compensates for the loss of ROI and can bring a different basis for the professional player figure, namely $ \ h, even at higher levels than normal SnG.

There is another advantage of «double» for the professional player who has indirect. As the «double», thanks to its prize structure creates a misleading sense of the majority of players «ease» games in them, and the average level of the opponents, playing in «double», as a rule, much less the same level in standard sng. A difference in skill inevitably leads to an increase in the average ROI.

It is therefore not surprising that the «double» today offered by most online pokerrumov and networks. This range of buy-ins with which they play, is quite wide.

With regard to the expected values of ROI for the «double», the practice of successful players in this type of sng, suggesting that they are in most cases should fluctuate between 10% and 15%. Because the prize structure of «double» fully coincides with the prize structure sng heads-up, then the normal average ROI of them will be roughly the same. And to ensure it is necessary to win about 6 out of 10 tournaments played.

In addition to the «double» of unlimited hold’em there «double» of Omaha Hi, but they are less popular and far more complex, so in this article, we are not going to stop.

Rules
Each room or network offer variations of regulations to «double», but the variation in this sense is not too much, because it can not affect the basic principle of «double», namely, their prize structure. Otherwise, the differences relate to the three elements of the rules.

1. The rate of growth of blinds. Depending on the room or the network offered «double» blinds increase at a rate equal to 3, 5 or 10 minutes.
2. The number of players. «Double» held on the tables as 10-max, and at 6-max tables. Some Romania and networks offer both types of «double» simultaneously.
3. The presence or absence of binding rates «Ante» at later stages of the tournament. In most rooms, and networks, which are played «double», they presuppose the existence of «Ante». But, for example, network rooms Ipoker «double» play without «Ante».

A third of the observed points is very important it is for the «double», as it has direct relevance to their strategy. If the «double» does not imply «Ante», then the later stages of the tournament can be drawn more titive because the stack is reduced only by the blind. However, for the «double» of the same network Ipoker it is not so relevant because the lack of «Ante» offset their relatively faster growth of blinds.

Now it makes no sense to dwell on this in more detail, since it directly on the strategy sng Double-or-nothing will go ahead. But as I said these nuances are of great importance for this type of sng.

Situation dependency
We know that among the different types of poker, the least situation-dependent cache a game where the player takes almost a constant strategy. A more situation-dependent game becomes MTT tournaments where all the solutions, especially in the later stages of the tournament depending on the size of the actual stack size stacks rivals and values blinds.

Best game in a sng to an even greater extent than in the MTT, is tied to these parameters, because they are severely limited by the number of rivals, and time passing. But in SnG Double-or-nothing situational dependence of all game decisions have hypertrophied nature. In fact, almost any decision in the «double» shall be based on a tournament situation.

For example, if a tournament situation dictates the need premium fold pocket pairs in standard sng extremely rare, in «double» This happens much more frequently.

Babbl, the table is 6 out of 10. Blinds 150 \ 300. We are in the position of UTG +1 and get pocket aces. Our stack is 3500 chips. The stack of chips UTG 4000. In an outsider, seated after us 600 chips. The remaining three rivals for about 2300 chips. UTG goes all-in.

In this situation, in the «double», there is only one single correct decision – namely, the fold of our AA.

The logic of this is very radical, and hence the maximum good example of this is readily apparent, but still explain it in detail. Despite the seeming simplicity, the principles of best game in the «double» is not trivial and a lot of controversial issues. Accordingly, they require a specific process «occurrence» in a particular logic of «double», and start it can and should be with the simplest example.

So, should we be compared to the UTG, having at the hands of the strongest of the possible starters? If we do, in most cases, almost double our stack. In a minority of cases, we will lose the comparison, and thus the entire tournament. But the need to double stack, there is no, since, winning «double», we get exactly the same prize as the winner with a small amount of chips.

At the same time, the game is a clear candidate to lose, the stack is equal to the size of just two big blinds. He will lose this tournament, and hence their loser will ensure a victory for all other participants, with a probability which is much higher than the probability to lose a comparison with tuzami. Therefore, to make the comparison useless, in fact it would mean the reduction of ITM, and hence the ROI at a distance.

Once again – in the above, there is no «discovery», this example is required just to implement the process of «entering» in particular the logic of «double». In particular, this logic is fundamentally different from the logic of standard SnG.

Differences
Best game in the «double» implies that the bulk of the player’s action is directed against its closest competitors, but not against the opponent, which is played by a distribution. The latter we consider, as a rule, as the indirect game against nearby rivals because the increase of the stack at the expense of other competitors is also a game.

In this example, a potential increase of the stack has almost zero value in a game against nearby rivals because their stacks are considerably lower and stack the last outsider to babble at all critically low.

Incidentally, the term – «the value of increasing the stack» – remember the future because it will be one of the tools for assessing the optimality of an action.

When you create a strategy game in the standard SnG they tend to share the stage conditional on the current size of blinds. These strategies generally are based on the fact that in the initial stages of the tournament should be played very taytovo, playing the very narrow range of hands. This is due to the theoretical setting, stating that in the initial stage of the tournament won worth of chips is considerably lower value lost.

The higher level than the blinds and, consequently lower level of the stack against them, the more extended range of hands played, the best game should be much luzovee. And in the final stages of the tournament or if the stack already contains a critical amount of M, the game is a so-called «push-bot», when treated according to the positions dealt cards and the situation only two solutions: all-in or fold.

This is the general scheme of the strategy is applicable to the SnG tournaments Double-or-nothing, only partially. And that is because they, unlike the standard SnG the size of the final stack is irrelevant. Therefore, the struggle to increase the stack is only at the level at which it must ensure the survival of the tournament before the attrition of his half of the participants.

This fact makes the vast majority of the differences in strategy «double» and SnG with the standard structure of prizes. For example, in the latest issue of survival for the babble, of course, is one of the most important. But in scope it is often incompatible with the problem of re-entry into the prize area with a good stack. Because the player in standard sng to ensure normal levels of ROI is not enough to have a high level of ITM.

The structure of his prize-winning places also should not have serious distortions in the second and third places, which are paid at only 30% and 20% of the prize pool, respectively. Thus, the babble he had to worry not only about the ITM, but also about the ROI, which is directly related to the structure of prizes.

In the «double» the problem of survival in the babble has become virtually the only one. And capacity-stack relevant only insofar as even a clear outsider has theoretical chances to take the player a prize if the stack is insufficient gap between stacks of other rivals.

Either way, this fact is determined by a slightly different approach to stage the tournament in the «double». It takes into account not only the current size of blinds, but the number of remaining players at the table. Therefore, in addition to a hard division to the stage (on the stages of growth blinds) to develop a strategy «double» should be taken into account and «Floating» divisions: the initial stage, predbabbl (7 players at the table for the tournament 10-max), and actually babbl.

This is all the more important that the «double» inherent trait, which is standard SnG is not in such an explicit form. Depending on the nature of the current tournament «floating» stage can occur at different «hard» stages.

For example, only a few distribution can occur babbl and quite the same success with all 10 players can stay in the game with a very high level blinds – for example, 150 \ 300, where the average stack is not more than 5VV.

Because of these circumstances, the conventional division of the tournament Double-or-nothing in the «hard» and «Floating» stage perfectly reasonable and necessary for the optimal strategy. You will face the same problem (to double or not) even playing online casino games.

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