Poker Heads Up Calculator

Posted By admin On 04/04/22

A poker odds calculator is a piece of poker software that lets you run any scenario that you might see at a poker table. You can fill in your own hand and calculate the chances of you winning. Nash tables are designed for heads-up play and give you perfect calling and shoving ranges when you are up against a single opponent. It should not be used for your pushing or calling decisions in a full table when everyone is folded to the small blind, but rather in an actual heads-up game where there are only two players at the table.

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Posted to Rec.Gambling.Poker, 5 Feb 95 16:34:12
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Has anyone calculated the chance that any particular 2-card hand willbeat any randomly-dealt 2-card hand for all the possible random boards?I'd like to know for judging the relative value of 2-card hands.

There are 47,008 possible distinct head-to-head matchups. I have calculatedthe exact W/L/T values for all these (and boy are my arms tired).

From this, it isn't hard to calculate the expectation of any two cardhand. The exact ranking of all 169 hands is given below. It isinteresting to compare these values with Justin Cases' table in_Percentage Hold'Em_, which used simulation to estimate the hand values.I think the main difference is that I counted ties as worth 1/2, whileI think Justin's table counted ties as 1.

Note: These numbers do not give necessarily indicate how handsmatch up against each other, but how each hand will do independentlyagainst a random, unknown hand.For example, Q7s (0.5430) ranks just above K6off (0.5422) in thetable. That means, if you all-in preflop against an unknown hand, youwould pick Q7s instead of K6off. However, if you have a propositionbet where you can take either Qd7d or Kh6c against each other,then you should take Kh6c, since it is favored against Qd7d.

AA0.8520371A4s0.5903364K50.533139796s0.4742829850.4142753
KK0.8239568A70.5884120J90.5325120J2s0.473781564s0.4133332
QQ0.7992516K8s0.5831235K2s0.5321173Q20.472954483s0.4087350
JJ0.7746947A3s0.5822032Q5s0.5276941T5s0.4721626940.4067105
TT0.7501178QJ0.5813469T8s0.5233437J50.4718089750.4051197
990.7205725K90.5781192K40.5232747T4s0.465304982s0.4027163
880.6916304A50.5769653J7s0.5232478970.462978173s0.4003594
AKs0.6704463A60.5768245Q4s0.518553086s0.4624327930.4001951
770.6623602Q9s0.5766432Q70.5176567J40.4618638650.3994430
AQs0.6620886K7s0.5753774T90.5153167T60.460920053s0.3969296
AJs0.6539268JTs0.5752786J80.514901695s0.457218763s0.3953356
AK0.6532007A2s0.5737890K30.5142569T3s0.4569251840.3944679
ATs0.6460239QT0.5729078Q60.510240576s0.4537177920.3909794
AQ0.6443184440.5702282Q3s0.5101925J30.452755443s0.3864195
AJ0.6356326A40.567296898s0.5080076870.4505081740.3854983
KQs0.6340040K6s0.5664074T7s0.5063904T2s0.448394872s0.3815589
660.6328475K80.5602017J6s0.506059185s0.4454499540.3815529
A9s0.6278121Q8s0.5601773K20.5050872960.4449135640.3801049
AT0.6272165A30.5584460220.5033402J20.443484752s0.3784933
KJs0.6256734K5s0.5579292Q2s0.5016904T50.442509562s0.3766896
A8s0.6194381J9s0.5566247Q50.501200894s0.4386197830.3748381
KTs0.6178856Q90.5536043J5s0.499868575s0.436755442s0.3682901
KQ0.6145580JT0.5524770T80.4972127T40.4350411820.3682767
A7s0.6098396K70.5518735J70.496819393s0.4326426730.3660226
A90.6077281A20.5492856Q40.4912768860.4324090530.3626477
KJ0.6056869K4s0.548846497s0.491177365s0.4313339630.3607763
550.6032492Q7s0.5430226J4s0.490704584s0.427016332s0.3598443
QJs0.6025921K60.5422328T6s0.4894068950.4266914430.3514589
K9s0.5998848K3s0.5405498J3s0.4823162T30.4259455720.3458365
A5s0.5992293T9s0.5402753Q30.482194492s0.4241517520.3428465
A6s0.5990583J8s0.5401564980.4809703760.4232275620.3407514
A80.5987261330.536930887s0.479363474s0.4184931420.3319975
KT0.5973892Q6s0.5361257T70.4790814T20.4166835320.3230323
QTs0.5946756Q80.5359979J60.478442754s0.4145342

In this lesson we’re going to run through a number of heads-up match-ups that will help give you an idea of where you stand in a variety of pre-flop situations when playing hold’em. Be aware that we’re only going to focus on individual hand match-ups. When playing hold’em it’s essential that you put your opponent on a range of hands, rather than specific holdings. However, knowing the odds of common pre-flop match-ups is a good starting point. Pick out and study what will help you. While it’s not essential that these statistics be committed to memory, it won’t hurt you if you do.

Let’s start by looking at hand match-ups when holding a pair:

Pair vs. Pair

The higher pair is an 80 percent favourite. We can get very technical and highlight the fact that if the underpair didn’t have any clean suits and/or the maximum number of straight outs then the high pair’s equity would increases by one or two percent.

Pair vs. Overcards

This is the classic coin flip hand that you’ll see many times late in tournaments with one player being all-in. The term coin flip indicates an even money situation which is really a 55 to 45 percent situation, as the pair is a slight favourite.

Pair vs. Undercards

In this situation the pair is normally about a 5-to-1 favourite and can vary depending on whether the two undercards are suited and/or connectors.

Pair vs. Overcard and an undercard

The pair is about a 70 percent favourite. Another example of this holding would be J-J against A-9. The underdog non-paired hand has three outs while the favourite has redraws.

Pair vs. Overcard and one of that pair

The classic example of this situation is the confrontation between a pair of cowboys and big slick. The A-K has three outs and it becomes a 70-30 percent situation or a 2.3-to-1 dog for the cowboys. This is a far cry from the next situation where even though one of the pair is matched the other card is lower.

Poker Heads Up Calculator

Pair vs. Undercard and one of that pair

The non pair has to hit its undercard twice or make a straight or flush to prevail. The pair is better than a 90 percent favourite or slightly better than 10-to-1 odds. I’ll take those odds anytime.

Pair vs. Lower suited connectors

You see this match-up late in tournaments when a player is getting desperate and pushes all-in with middle suited connectors. A hand such as Q-Q against 7-6 suited would be a prime example. The pair is a strong favourite to win.

Pair vs. Higher suited connectors

Here is the real coin flip situation. A pair of eights heads-up against a suited Q-J is a fifty-fifty proposition. The higher suited cards would have an edge against a lower pair, such as 2’s or 3’s, since the board itself can sometimes destroy little pairs.

Common Pre-Flop Match-Ups (Non Pairs)

The following heads-up confrontations contain no pairs.

Two high cards vs. Two undercards

The two higher cards are usually a 65% favourite to win, but it can vary depending on whether any of the cards are suited and/or connectors.

High card, low card vs. Two middle cards

In this match-up the high card gives it the edge. But it’s only a marginal winner, approximately 57% to the hand containing the high card.

High card, middle card vs. Second highest, low card

The edge is increased by around 5% when the low card becomes the third highest card, as shown in this example, which gives approx 62% to 38% for high card/middle card combination.

High card, same card vs. Same card, low card

In this example the A-J is in a very strong position. If we discount any flush or straight possibilities, it only leaves the player holding J-8 with three outs (the three remaining 8’s).

Poker Heads Up Calculator

Same high card, high kicker vs. Same card, low kicker

The high kicker gives this hand a fairly big edge. It’s very common for A-K run into A-Q, A-J, and lower, and it’s why Ace-King is such a powerful hand, particularly at the business end of no-limit hold’em tournaments when people move all-in with any sort of Ace.

Statistical Variations

For any math maniacs reading this who do not find these odds precise enough, I acknowledge that the math is rounded and for the most part does not take into account the possibilities of ties and back door straights and flushes. What players need to be equipped with is the general statistical match-up – not the fact that in the example of a pair of eights against a suited Q-J the percents are exactly 50.61 for the eights to 48.99 for the suited connectors with the balance going to potential ties. I call that a fifty-fifty proposition.

Of greater importance than quibbling over tenths of a percent is the fact that in most heads-up confrontations you can never be a prohibitive underdog. That is one reason why poker is so challenging and fun. Of course, while true, I’m not attempting to embolden the reader to ignore the odds and become a maniac. Math is the underpinning of poker and if you regularly get your money into the middle with the worst of it you will go broke.

One statistic that hasn’t been mentioned, and it’s one that I particularly like is this – the odds of both players being dealt Aces when playing heads up (one on one) is 270,724-to-1. It’s my favourite statistic because it provides me with almost total confidence when I’m playing heads up and receive pocket Aces that I’m the boss! That confident feeling lasts right up to the river when my Aces get cracked by some rotten piece of cheese which my opponent elected to play. As mentioned already, rarely are you a prohibitive underdog – so remember that to keep those losing hands in perspective.

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Poker Heads Up Calculator Cheat

By Tom 'TIME' Leonard

Heads Up Poker Table Game

Tom has been writing about poker since 1994 and has played across the USA for over 40 years, playing every game in almost every card room in Atlantic City, California and Las Vegas.

Poker Heads Up Calculator 2019

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