AQs vs A3s: preflop equity

Before any board card is dealt, AQs holds 70.16% equity against A3s, which leaves A3s with 29.84%.

AQs

70.16%

Wins 67.39%, ties 5.53%

A3s

29.84%

Wins 27.08%, ties 5.53%

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

AQs against A3s: the numbers

Exact preflop results for AQs against A3s, in percent
HandWinsTiesLosesEquity
AQs67.3905.53027.08070.155
A3s27.0805.53067.39029.845

AQs and A3s are both suited hands. Because the hands share one rank, the one with the higher kicker is ahead when that rank pairs and the other hand is mostly drawing.

AQs is the clear favorite, though A3s gets there on roughly one board in 3. Split pots make up 5.53% of the boards, and both equity figures count them as half a win each.

The hand ranking puts AQs at 10 and A3s at 38 out of 169 starting hands.

Boards behind the percentages: 20,547,648 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
AQs13,847,0001,136,0005,564,000
A3s5,564,0001,136,00013,847,000

12 specific deals times 1,712,304 boards gives the exact total. The won, tied and lost counts are approximations from the five-decimal percentages, rounded to the nearest thousand.

AQs against A3s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
AQs2.3511.4843.6930.425
A3s0.4253.6931.4842.351

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

AQs prefers rainbow flops topped by a ten or better, where it holds 76.80%, and likes low rainbow flops (nine high or lower) least, where it holds 56.81%. AQs stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

AQs against A3s by flop texture, in percent
FlopShare of flopsAQs winsTiesA3s winsAQs equity
Rainbow, ten or higher23.86775.0403.51721.44376.799
Rainbow, nine or lower7.04254.6534.30841.03956.807
Two-tone46.54367.7703.37528.85569.457
Monotone5.21561.3745.31933.30764.033
Paired17.33362.82314.64722.53070.146

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

Against one random hand instead, AQs holds 66.21% and A3s holds 58.22%. Facing each other changes that by +3.95 points for AQs and -28.38 points for A3s.

AQs and A3s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
AQs, all flops70.15566.209+3.9461.05960
AQs, rainbow, ten or higher76.79966.209+10.5901.15995
AQs, rainbow, nine or lower56.80766.209-9.4020.85800
AQs, two-tone69.45766.209+3.2481.04906
AQs, monotone64.03366.209-2.1760.96713
AQs, paired70.14666.209+3.9371.05946
A3s, all flops29.84558.220-28.3750.51262
A3s, rainbow, ten or higher23.20158.220-35.0190.39851
A3s, rainbow, nine or lower43.19358.220-15.0270.74189
A3s, two-tone30.54358.220-27.6770.52461
A3s, monotone35.96758.220-22.2530.61778
A3s, paired29.85458.220-28.3660.51278

Does a shared suit matter?

There is no shared-suit case for this pair, since the cards they would need are already in the other hand. Every deal is a no-shared-suit deal.

AQs against A3s by suit overlap, in percent
DealsSpecific dealsShare of dealsAQs winsTiesA3s winsAQs equity
Share a suit00.00not possiblenot possiblenot possiblenot possible
No shared suit12100.0067.3905.53027.08070.155

How often this matchup comes up

You will meet this exact matchup 0.0015% of the time in a random heads-up deal: 24 of 1,624,350, counting either seat order.

A worked example

With $100 from each side, the $200 pot is split on average as $140.32 for AQs and $59.68 for A3s; the first side gains $40.32 per all-in and the second gives up $40.32.

Run 1,000 deals and the tally comes out near 674 for AQs, 271 for A3s and 55 ties.

The same matchup from the other side

Swap the hands and you get A3s with 29.84% against AQs with 70.16%. We keep one page per matchup, with the better-ranked hand first.

Open the calculator with AsQs against Ah3h already entered, a deal with no shared suit, and change any card to try your own hand. The matchups after it each swap one hand for a nearby one in the ranking.

How this was computed

We counted every case. Each suit pattern of the 12 specific AQs against A3s deals meets all 1,712,304 boards, and the better five-card hand wins; a split pot is half a win each. The flop table reads each board under all ten of its three-card flops.

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

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