77 vs A6s: preflop equity

Averaged over every possible board, 77 is ahead of A6s by 34.74 points of equity, 67.37% to 32.63%.

77

67.37%

Wins 67.17%, ties 0.40%

A6s

32.63%

Wins 32.43%, ties 0.40%

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

77 against A6s: the numbers

Exact preflop results for 77 against A6s, in percent
HandWinsTiesLosesEquity
7767.1680.39632.43667.366
A6s32.4360.39667.16832.634

77, a pocket pair, plays A6s, a suited hand. The pair sits between the other hand's two cards: one is higher and one is lower, so the pair is exposed to the higher card.

77 is well ahead, and A6s needs a specific kind of board to catch up. Ties are part of the picture: 0.40% of boards end in a split pot, and each side counts that as half a win.

In the ranking of all 169 starting hands, 77 is number 9 and A6s is number 31.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
7727,603,000163,00013,330,000
A6s13,330,000163,00027,603,000

The total is exact: 24 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.

77 against A6s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
772.0641.4893.0830.484
A6s0.4843.0831.4892.064

In the last column, a pot-to-call ratio at or above the figure makes a call break even or better at this equity.

Who is ahead on which flops

Across the five flop textures 77's equity moves by 17.91 points, from 63.27% on monotone flops to 81.18% on low rainbow flops (nine high or lower). 77 stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

77 against A6s by flop texture, in percent
FlopShare of flops77 winsTiesA6s wins77 equity
Rainbow, ten or higher25.22066.6950.20833.09766.799
Rainbow, nine or lower5.68980.9300.50818.56281.184
Two-tone46.54566.0140.24333.74366.135
Monotone5.21262.0742.38335.54363.266
Paired17.33467.9700.44731.58368.194

Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank.

Compared with a random hand

Start from the random-hand figures, 66.24% for 77 and 59.91% for A6s. This opponent changes them by +1.13 and -27.28 points.

77 and A6s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
77, all flops67.36666.236+1.1301.01706
77, rainbow, ten or higher66.79966.236+0.5631.00850
77, rainbow, nine or lower81.18466.236+14.9481.22568
77, two-tone66.13566.236-0.1010.99848
77, monotone63.26666.236-2.9700.95516
77, paired68.19466.236+1.9581.02956
A6s, all flops32.63459.906-27.2720.54475
A6s, rainbow, ten or higher33.20159.906-26.7050.55422
A6s, rainbow, nine or lower18.81659.906-41.0900.31409
A6s, two-tone33.86559.906-26.0410.56530
A6s, monotone36.73459.906-23.1720.61319
A6s, paired31.80659.906-28.1000.53093

Does a shared suit matter?

The suit split reads 67.65% for 77 with a shared suit and 67.09% without one. 77 does better with a shared suit, by 0.56 points.

77 against A6s by suit overlap, in percent
DealsSpecific dealsShare of deals77 winsTiesA6s wins77 equity
Share a suit1250.0067.4280.43932.13367.647
No shared suit1250.0066.9080.35332.73967.085

How often this matchup comes up

77 against A6s is made up of 24 specific-card matchups in one seat order, 0.0015% of the 1,624,350 ordered deals, and 48 counting both seat orders, 0.0030%.

A worked example

To see what the equity is worth, imagine $100 each in a $200 pot. 77 is worth $134.74 on average (+$34.74); A6s is worth $65.26 (-$34.74).

A thousand deals look like this: 77 takes 672, A6s takes 324, 4 are ties.

The same matchup from the other side

One page covers both views. From A6s' side the equity is 32.63%, and from 77's side it is 67.37%.

The calculator link fills in 7s7h against Ad6d, a deal where the two hands share no suit. Change any card to test your own hand. The neighboring matchups below swap one of the two hands for one of similar strength.

How this was computed

Nothing here is simulated. The 24 deals of 77 against A6s fall into a few suit patterns, each dealt against all 1,712,304 boards, with both best five-card hands compared on every board. Ties give each hand half a win, and the flop rows count a board under each of its ten flops.

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

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