A3s vs 76s: preflop equity

Before any board card is dealt, A3s holds 54.90% equity against 76s, which leaves 76s with 45.10%.

A3s

54.90%

Wins 54.64%, ties 0.52%

76s

45.10%

Wins 44.84%, ties 0.52%

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

A3s against 76s: the numbers

Exact preflop results for A3s against 76s, in percent
HandWinsTiesLosesEquity
A3s54.6380.52444.83854.900
76s44.8380.52454.63845.100

Both hands are suited hands: A3s and 76s. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances.

A3s leads by less than 10 points of equity, so the result of any one deal is close to a toss-up. Of every 100 boards, about 0.52 are split pots, and the equity figures already include them.

In the ranking of all 169 starting hands, A3s is number 38 and 76s is number 115.

Boards behind the percentages: 27,396,864 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
A3s14,969,000144,00012,284,000
76s12,284,000144,00014,969,000

The total is exact: 16 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.

A3s against 76s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
A3s1.2171.8302.2300.821
76s0.8212.2301.8301.217

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

Paired flops are the best for A3s (61.22%); low rainbow flops (nine high or lower) are the worst (32.49%). 76s is ahead on low rainbow flops (nine high or lower), even though it trails A3s when every flop is counted.

A3s against 76s by flop texture, in percent
FlopShare of flopsA3s winsTies76s winsA3s equity
Rainbow, ten or higher25.22058.4180.22841.35458.532
Rainbow, nine or lower5.68932.1550.66567.18032.487
Two-tone46.72753.4480.27946.27353.587
Monotone5.27351.1413.44445.41552.863
Paired17.09160.8750.68238.44361.216

Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank.

Compared with a random hand

Compared with a random opponent, this matchup shifts A3s from 58.22% by -3.32 points and 76s from 45.37% by -0.27 points.

A3s and 76s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
A3s, all flops54.90058.220-3.3200.94297
A3s, rainbow, ten or higher58.53258.220+0.3121.00536
A3s, rainbow, nine or lower32.48758.220-25.7330.55800
A3s, two-tone53.58758.220-4.6330.92042
A3s, monotone52.86358.220-5.3570.90799
A3s, paired61.21658.220+2.9961.05146
76s, all flops45.10045.372-0.2720.99401
76s, rainbow, ten or higher41.46845.372-3.9040.91396
76s, rainbow, nine or lower67.51345.372+22.1411.48799
76s, two-tone46.41345.372+1.0411.02294
76s, monotone47.13745.372+1.7651.03890
76s, paired38.78445.372-6.5880.85480

Does a shared suit matter?

The suit split reads 56.52% for A3s with a shared suit and 54.36% without one. A3s does better with a shared suit, by 2.16 points.

A3s against 76s by suit overlap, in percent
DealsSpecific dealsShare of dealsA3s winsTies76s winsA3s equity
Share a suit425.0056.2150.60443.18156.517
No shared suit1275.0054.1120.49745.39154.360

How often this matchup comes up

The class pair covers 16 combinations of specific cards in a fixed seat order, 0.0010% of 1,624,350, and 32 (0.0020%) in either order.

A worked example

A $100 all-in from each player makes a $200 pot, and the exact equity says A3s gets $109.80 of it on average and 76s gets $90.20.

A thousand deals look like this: A3s takes 547, 76s takes 448, 5 are ties.

The same matchup from the other side

If you came looking for 76s against A3s, the numbers are the same with the hands swapped: 45.10% and 54.90%.

Open the calculator with As3s against 7h6h 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

Method: exact enumeration. The 16 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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