AKs vs AQs: preflop equity

Before any board card is dealt, AKs holds 71.28% equity against AQs, which leaves AQs with 28.72%.

AKs

71.28%

Wins 69.16%, ties 4.23%

AQs

28.72%

Wins 26.61%, ties 4.23%

Equity counts a tie as half a win. Exact over every board.

AKs against AQs: the numbers

Exact preflop results for AKs against AQs, in percent
HandWinsTiesLosesEquity
AKs69.1634.22926.60871.277
AQs26.6084.22969.16328.723

AKs meets AQs, and both are suited hands. Sharing a rank is the signature of a dominated hand, since the weaker hand is usually out-kicked when the shared rank shows up.

A lead of 42.56 points is large but not decisive: AQs still takes about 266 of every 1,000 deals. 4.23% of boards are ties, so the equity of each hand is its win rate plus half of that.

AKs ranks number 8 of 169 starting hands, and AQs ranks number 10, by equity against a random hand.

Boards behind the percentages: 20,547,648 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
AKs14,211,000869,0005,467,000
AQs5,467,000869,00014,211,000

The total is exact: 12 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand.

AKs against AQs read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
AKs2.4821.4463.7580.403
AQs0.4033.7581.4462.482

The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call.

Who is ahead on which flops

AKs prefers low rainbow flops (nine high or lower), where it holds 82.47%, and likes monotone flops least, where it holds 64.64%. AKs stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

AKs against AQs by flop texture, in percent
FlopShare of flopsAKs winsTiesAQs winsAKs equity
Rainbow, ten or higher23.13869.7701.92328.30770.732
Rainbow, nine or lower7.77179.8545.22214.92482.465
Two-tone46.54369.3802.45928.16170.609
Monotone5.21562.3934.48533.12264.635
Paired17.33365.01511.53523.45070.783

Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank.

Compared with a random hand

Start from the random-hand figures, 67.05% for AKs and 66.21% for AQs. This opponent changes them by +4.23 and -37.49 points.

AKs and AQs here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
AKs, all flops71.27767.045+4.2321.06312
AKs, rainbow, ten or higher70.73267.045+3.6871.05499
AKs, rainbow, nine or lower82.46567.045+15.4201.22999
AKs, two-tone70.60967.045+3.5641.05316
AKs, monotone64.63567.045-2.4100.96405
AKs, paired70.78367.045+3.7381.05575
AQs, all flops28.72366.209-37.4860.43382
AQs, rainbow, ten or higher29.26866.209-36.9410.44205
AQs, rainbow, nine or lower17.53566.209-48.6740.26484
AQs, two-tone29.39166.209-36.8180.44391
AQs, monotone35.36566.209-30.8440.53414
AQs, paired29.21766.209-36.9920.44128

Does a shared suit matter?

For this pair the shared-suit row is empty: the two hands cannot both own a card of one suit without reusing a card.

AKs against AQs by suit overlap, in percent
DealsSpecific dealsShare of dealsAKs winsTiesAQs winsAKs equity
Share a suit00.00not possiblenot possiblenot possiblenot possible
No shared suit12100.0069.1634.22926.60871.277

How often this matchup comes up

Out of 1,624,350 ways to deal two seats two cards each, 12 are AKs in one seat and AQs in the other (0.0007%); with the seats swapped too, 24 (0.0015%).

A worked example

Put $100 each into a $200 pot and deal every board once: AKs averages $142.56 back, ahead of its $100 by $42.56, while AQs averages $57.44, short of its $100 by $42.56.

Over a long run, 1,000 deals split into about 692 for AKs, 266 for AQs and 42 tied.

The same matchup from the other side

AQs versus AKs is this same page seen from the other hand: 28.72% for AQs, 71.28% for AKs.

Try AsKs against AhQh in the calculator: the hands share no suit, and every card can be changed. The links after it are the closest matchups in the ranking.

How this was computed

Method: exact enumeration. The 12 specific deals are grouped by suit pattern, each is run against all 1,712,304 boards, and both seven-card hands are scored. Equity adds half of every tie, and flop textures are tallied over the ten flops inside each board.

Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used.

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