7 Card Hand Evaluators

[mykey1961]

A second Table could give the Minimum, and Maximum possible Hand Values for each State.

Value = StateValue[State].Minimum;
Possible = StateValue[State].Maximum;

NewState = Table[State,NextCard];

[RayW]

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Hey are there any evaluators out there that stop on the flop (5 cards)?

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Well, you can use cactus key's code, pokersource, or the evaluator here I have the hand strength for 5 cards in the 0 (zero) entry. There are many more to choose from than just the ones listed. Depends what you want to do. Well, since we are on that subject, what do you want to do with it?

RayW...

[Al P]

Just crunch some raw numbers - you know like AA vs. 33 only seeing the flop or AK vs. 44 only seeing the flop. 33 is 7.5:1 against flopping a set but does an evaluator come out with those exact numbers or something different because of set over set, etc.

[mykey1961]

AA is ahead of 33 88.7951% on the flop
AKo is ahead of 44 31.0130% on the flop
AKs is ahead of 44 31.8311% on the flop

[Adrian20XX]

Hi,
If you are looking for a calculator (being the difference that is a complete and closed application instead of a function), there is a very good one at ProPokerTools.
Here is the link to the flop of AA vs. 33 and the link to AK vs. 44
I also remember that in this site you can get this results as numbers instead of the graph, but don't remember exactly how.
Regards ...

[Adrian20XX]

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If someone could figure out a way to assign a unique index value between 1 and 133784560 for 7 unordered cards, you could dump everything into a 133 MB lookup table.


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Single byte for hand's strength is not enough, so the table must be 266 MB at least.

Andrzej Nironen

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Actually it can be done in under 133 MB...


I've got an array of approx 30 million integers.

One way of accessing a hand ranking is:


Rank := Eval[Eval[Eval[Eval[Eval[Eval[Eval[c1]+c2]+c3]+c4]+c5]+c6]+c7];

The general idea is there are:

1 card hands. 52x52
2 card hands. 1326x52
3 card hands. 22100x52
4 card hands. 84448x52
5 card hands. 152607x52
6 card hands. 352443x52

For each N card hand, there are 52 vectors to the appropriate N+1 card hand.

For 6 card hands, instead of vectors to the 7 card hand, the array holds the Hand Ranking of the 7 card hand.

[/ QUOTE ]

Hi,
I'm building my evaluator and I'm having a problem.
Does anybody have the number of states for each different types of 5 cards states?
Mykey gets 152607, but I only have 118313.
TIA & Regards ...

Type States
XaYaZaTaUa 5158
XaYaZaTaX 11440
XaYaZaTaU 14300
XaYaZaTU 28600
XaYaZaXX 3432
XaYaZaXY 3432
XaYaZaXT 34320
XaYaZaTT 11456
XXXXY 156
XXXYY 156
XXXYZ 858
XXYYZ 858
XXYZT 2860
XYZTU 1287
Total 118313

[advis0r]

is there an obviously better way for omaha hand evaluations than doing 6 seven card hand evaluations?

im trying to speed up my omaha preflop equity calculations [img]/images/graemlins/smile.gif[/img]

[sputum]

[ QUOTE ]
is there an obviously better way for omaha hand evaluations than doing 6 seven card hand evaluations?

im trying to speed up my omaha preflop equity calculations [img]/images/graemlins/smile.gif[/img]

[/ QUOTE ]
60 5-card hand evaluations? It makes sure you're not playing the board [img]/images/graemlins/tongue.gif[/img]
Will try the Java code later. Built my own but it was rudely hacked together [img]/images/graemlins/blush.gif[/img] This looks HUGELY faster.

[advis0r]

lol sorry i was pretty confused when writing the post, of course im doing (4 over 2) * (5 over 3) = 6 * 10 = 60 5-card evaluations already.

my problem is that omaha preflop enumeration isnt possible and my montecarlo simulation is way too slow (i thought it might be because of the evaluation speed). are there any known tricks? what does poker-eval do? [img]/images/graemlins/smile.gif[/img]

[pygmyhipo]

[ QUOTE ]
lol sorry i was pretty confused when writing the post, of course im doing (4 over 2) * (5 over 3) = 6 * 10 = 60 5-card evaluations already.

my problem is that omaha preflop enumeration isnt possible and my montecarlo simulation is way too slow (i thought it might be because of the evaluation speed). are there any known tricks? what does poker-eval do? [img]/images/graemlins/smile.gif[/img]

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The poker-eval code for Omaha is brute force. It just does the 60 5-card hands and doesn't take advantage of any shortcuts. This is fine for pokenum, since even starting on the flop there are only about ~1k rivers, so that's only 60k evals per player. For preflop pokenum, you would want to use the monte carlo option for boards.

But for heavy duty analysis, strategy studies, etc, I would suggest using the large table lookup ideas in this thread and then enumerating the 60 hands. You should get good cache performance when looking up the 60 cases because they share so many cards. You may need to take care in the array index ordering to get the best result.

-pyg