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Go Back   Poker Forums > Texas Hold Em Rooms > Advice & Strategy > Theory, Advice, Strategies

99 vs. AK

Theory, Advice, Strategies

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Old 12-26-2005, 03:30 PM
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Default 99 vs. AK

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What are the odds that AK hits an Ace or King on the board? After the flop it is about 24% but how much is that % before the flop? Is it really a coinflip?
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Old 12-26-2005, 03:41 PM
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Preflop, AKo is a slight dog (44.3%) to win vs. 99 (55.7%)

this page: http://www.cardplayer.com/poker_odds...ldem/index.php will display the odds to any situation you can come up with...very handy

Last edited by dscottr17; 12-26-2005 at 03:43 PM.
  
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Old 12-26-2005, 04:31 PM
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Tx Ds, I forget I could use any online poker calculator to figure out the odds myself. I just started learning the game.
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Old 12-26-2005, 05:19 PM
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On PS you know that the odds go up greatly after the turn, to approx 90%.
  
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Old 12-26-2005, 07:09 PM
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Quote:
Originally Posted by PokerRef
On PS you know that the odds go up greatly after the turn, to approx 90%.
lol...yeah pokerstars has some messed up turn and river cards...
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Old 12-27-2005, 07:43 PM
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Doyle Brunson played some guy something like $100 a hand where he started with pocket dueces and that guy started with AKs. He took several grand off this guy before the guy figured out he wasn't going to win. He talks about it in SS2.
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Old 12-28-2005, 03:11 PM
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Default are my calculations correct

When I'm playing and I need to work out what percent I have for winning I say that each card has a 2% chance of appearing, (52 cards minus my 2 = 50 cards. each out has 1 /50 or 2%) I then multiply this by my outs and then by my attempts. ( rough easy system )

In this topics example (A x 3) and (K x 3) = 6 outs. board = 5 attempts. therefore (6 x 2%) x 5 = 60% not near 44%. However, with 2 attempts ( turn & river) (6 x 2) x 2 = 24% very acurrate.

However, If I have a 24% chance with 2 cards how can the 3 cards on the flop possibly offer only 20% ( assuming 44% is accurate for winning chances)

So I worked out an accurate system. (Outs / cards left in deck) x 100 = percentage chance of card hitting.

the results

6 / 48 = 12.5
6/ 47 = 12.77
6 / 46 = 13.04
6 / 45 = 13.33
6 / 44 = 13.64
Total = 65.28%

so if an Ace and a king hit the board 65.28% of the time why do we only win 44% of the time. well of all the times we hit the A or the K we must also assume our opponnent will hit another 9 about 1/5 th of the time.

so lets see how that works

2 / 48 = 4.17
2 / 47 = 4.26
2 / 46 = 4.35
2 / 45 = 4.44
2 / 44 = 4.55

total = 21.63 %

final calculation, chance of hitting A K - chance of 9 appearing
65.28 - 21.63 = 43.65 % winning hand
Your question however was how often the A or King will hit which is rougly 65 %

Hope this helps. I actually learned alot by doing that example.
  
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Old 12-28-2005, 04:46 PM
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working in 3 min so not time for a detailed answer. The main problem i see with your system is that it doesn't facilitate other ways of winning hands e.g. ak can catch a flush, straight etc - also 99 can do the same.

This does not equal a large deviation from the %es but it does show that your system needs a little fine tuning. Also 9 and 9 is known so there are 4 known cards (48 unknown cards at the start) and your explaination might not make this clear. it is better to memorise tables i think for the preflop situations than try to calucuate.
  
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Old 12-28-2005, 05:24 PM
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I appreciate you only have 3 minutes to answer and have probably missed the original question.

' What are the odds that AK hits an Ace or King on the board? '

That's the question I was answering.

I use 2% as an approximation for quick calculations and thus showed how I got this by 52 - 2. Your right though, it is 52 - 4 and I could have explained that. I probably should memorise tables and would reccommend others to do so also as it is easier that working out the maths. But I'd definately say 1 method minimum, 2 optimum.

All the best Ben
  
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