我觉得许多同学玩锦标赛的时候,都喜欢拿A带小推,如果有两个人靠你,你还不如推KQ或者QJ了。
听说我们北面那个叫红鹿的小镇,打1-2一群翻牌前推的。好奇心起,我到计算器上算一些翻牌前的百分率。发现一个现象,我想不太明白,希望霍华德等年轻的数学好的同学帮我说一下为什么。
单挑的时候,如果翻牌前推了,不同花KQ不如不同花A5,差挺多呢,57对42.当有第三个人进来的时候,比如第三个人是对8,那结果就变成88-38%,KQ-35%,A5-26%,由于第三个人的加入,KQ比A5厉害了。我想不太好为什么。是不因为他的两个牌都成了8的 over card,而A5只有一个。同时,还有顺子可能。这个结论告诉我,当有3个人翻牌前all的时候,A带小变成啥也不是了,而KQ仍然是很强的牌。
I don't understand how the odds was calculated but I disagree with the lists how the small pairs got put so high in the rank.
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i.e.
20 44 0.455
21 KQS 0.435
I would be much more willing to push with KQs than 44. The reason is based on the % of hands that completely dominate you. you push with KQs, the only hands completely dominate you (>75% chance beats KQ) are AA KK AK QQ AQ, 5 hands. All other hands are more or less coin flips or the hands you dominate against KX QX. On the other hand hands like 44 55 you have so many hands completely dominate you, all the bigger pairs. The other hands, are more or less coin flips. When you are pushing with a hand that could have larger % of hands dominates you, you are putting your tounament life at risk much too often. To me KQ is just as good as AK and AQ, only slightly worse.
The same reason why A 5 is no good either. when you push with A 5, you got even more hands that dominates you. all A X when X>5. All larger pocket pairs AA-66. There are way too many hands dominates you. Not as good a hand to push as KQ KJ.
Simply put, when you push with a hand and gets called. The cards flip over, you tell yourself, "oops, i wish i hadn't pushed" The more % of times this could happen to your hand, the less appealing for you to push with that hand. It is fair to say, you always wish that you hadn't pushed your hands against a hand that domintes you >70% chances
you are right, KQ is underdog against AX. but not by much 55 vs 45 is close to a coin flip. When you push with KQ, your M is low, you are close to getting knocked out. You want to win a few coin flips to get back to healthy stacks. But what you don't want is to run into a wall. When you M is < 6, which one would you choose to gamble? KQ vs AX or 44 vs 66? with small pair, it is much too often to run into a wall.
Say when you have 3 bb left, you are sb holding 4 4, everyone fold to you and you know bb is holding 66, will you push? on the other hand, under the same situation, you are holding KQ and bb is holding A 6, are you pushing? The answer should be pretty obvious.
Also when your M is low and the big stack tend to open up their calling range. you get called a lot more often by any two cards like K x Qx. Therefore you elimated a lot of hands that could be dominated by KQ. While all those hand really does not help 4 4 much. You are not suppose to be pushing with M > 10 anyway, and when you have smaller M, the calling range you have is a lot wider.
的确,KQs被dominate的牌只有5手,也就是你说的AA KK AK QQ AQ。如果你有KQ并open push的话,别人这5手牌总共有28种可能。如果你有44呢,所有overpair共有60种可能。
[quote="Howard":2id2iwkx]的确,KQs被dominate的牌只有5手,也就是你说的AA KK AK QQ AQ。如果你有KQ并open push的话,别人这5手牌总共有28种可能。如果你有44呢,所有overpair共有60种可能。
不知道这个问题可不可以跳出到细节之外来考虑呢?
就是忽略coin flip的情况(%在40~60之间的)。
优先考虑规避被达米内特的情形,因为tournament活命是第一要务。
其中的一个重要问题是,tournament玩的盘数远远小于玩cash的手数,长期的hands*微弱%获得的EV是不是可以被忽略?
这个需要一套复杂的算法,涉及到ICM之类的。
从直觉上来讲,我倾向选择KQs而不是小对。
这种情况太常见了,很想读一读精确分析该情形的书,谁给推荐几本?
你文中有一句话我不能同意“tournament活命是第一要务”。我认为,tournament跟cash game一样,Max Money EV才是第一要务,而且是唯一要务。
比赛里面Max Money EV也能细分两种人,一种是Max hourly EV,另一种是Max per tournament EV。两种打法在某些地方会有细微的差别。
我承认在比赛里面有无数跟你所说一样的人,以活命为第一要务。这种人带给你额外的fold equity,如不利用,会遭天谴。
此外,达米内特与非达米内特并无本质区别,不是黑与白那样。比如ATo对JTs,要算做达米内特,但是JTs有33%以上的EV。A8对77,说来也算coinflip,但他们是43%对57%的巨大差异。一个所谓coinflip中,如果能差别出14%都可以忽略不计,那么,我被达米内特一下下也没什么大不了的。
tournament玩的盘数远远小于玩cash的手数,并不是忽略“小优势”的理由。小优势也是优势,豆芽也是菜。巴菲特告诉我们,如果一个股票你认为它5年后不会比现在更值钱,那么就一天也不要持有。扑克也是投资,不是投机,一样的。
mathematical models are all based on assumptions. Most of time they are not exactly the same in real cases.
I am guessing Howard averaged all odds against other hands to calculate the overall odds for each hand. This is assuming all hands in the list are uniformly distributed, meaning every hand has equal chances to call (he actually use a special case of that, 100% chance for each hand to call). This is clearly not an accurate assumption. A 7 A 8 will not call your all in all the time and 10 10, 9 9, 8 8 will not either but will call more often than not, because people over play small pocket pairs much more often. This is especially true when the pusher's stack is larger. Are you going to call off half of your stack with A 7 or 99 88? This is also why in my opinion KQ is much more appealing than 33. To compute an exact methematical model, you have to give out the probability of each hand that might call your all in and computer the weighted odds instead of the average of all odds. Is that easy? absolutely not. Because different people on your table will give you totally different probabilities.
In all, using a simple almost naive math model to rank the hand is not only inaccurate but also misleading. I would use this list with extreme caution.
I also disagree with only trying to maximize your chip gain in touney like you do in cash. In cash, you go all in every time when you are with 51% chance vs 49% chance you will always be winning. Totally true. But in touney, totally not true. Let us assume you always go all in AA vs 22. you have 80% chance to win the pot. Great. Now if you do that 6 times in a touney (totally possible for large MTTS 1000 people because there is always bigger stack waiting for you out there), you have 0.8^6 time chance to stay after all in 6 times. What chance does that give you to still be in alive? 0.2621! did you imagine this number? If you always wait for good hand then go all in with it, you have small chance to make it to the end even with 6 AAs. Of course this model is naive as well because of the simple assumption but it gives you an idea. Now do you think it is still wise to go all in with 55% vs 45% all the time? I would be pushing with 45% of chance winning, but prefer not to calling with 55% chance winning if it is for my entire stack. Because this fold equity is so important in the game, it alters the touney play completely vs cash game.
windstormm 写一手漂亮的英文,观点也非常鲜明,是本论坛新发现的人才。
我本来一看英语就躲远远的。如果在英文论坛里,没办法,只好捏着鼻子看了。但在中文里,一般英语就躲开。刚才看了你最后的回帖,觉得你的英文真是很棒,文章内容也相当好。欢迎来坛里,可否自我介绍一下。
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