A6s vs 65s: preflop equity

Before any board card is dealt, A6s holds 67.69% equity against 65s, which leaves 65s with 32.31%.

A6s

67.69%

Wins 66.46%, ties 2.46%

65s

32.31%

Wins 31.08%, ties 2.46%

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

A6s against 65s: the numbers

Exact preflop results for A6s against 65s, in percent
HandWinsTiesLosesEquity
A6s66.4612.45631.08367.689
65s31.0832.45666.46132.311

Both hands are suited hands: A6s and 65s. The two hands share a rank, and the one with the better other card dominates: it wins most kicker battles when that shared rank hits.

That is a clear edge, 67.69% to 32.31%, but 65s still wins often enough that one hand proves nothing. Of every 100 boards, about 2.46 are split pots, and the equity figures already include them.

Place 31 of 169 belongs to A6s and place 128 belongs to 65s in the ranking against a random hand.

Boards behind the percentages: 20,547,648 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
A6s13,656,000505,0006,387,000
65s6,387,000505,00013,656,000

Exact total: 12 deals times 1,712,304 boards. The other three counts come from the five-decimal percentages and are rounded to the nearest thousand, so read them as approximate.

A6s against 65s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
A6s2.0951.5053.2170.477
65s0.4773.2171.5052.095

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

By flop texture, A6s' equity runs from 47.26% on low rainbow flops (nine high or lower) up to 72.97% on paired flops. The lead reverses on low rainbow flops (nine high or lower): there 65s is the favorite even though A6s is ahead overall.

A6s against 65s by flop texture, in percent
FlopShare of flopsA6s winsTies65s winsA6s equity
Rainbow, ten or higher25.25472.1301.45926.41172.859
Rainbow, nine or lower5.65443.6677.17949.15447.257
Two-tone46.54364.9732.17732.85066.061
Monotone5.21559.5214.51335.96661.777
Paired17.33471.7182.50125.78172.969

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, 59.91% for A6s and 43.13% for 65s. This opponent changes them by +7.78 and -10.82 points.

A6s and 65s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
A6s, all flops67.68959.906+7.7831.12992
A6s, rainbow, ten or higher72.85959.906+12.9531.21622
A6s, rainbow, nine or lower47.25759.906-12.6490.78885
A6s, two-tone66.06159.906+6.1551.10274
A6s, monotone61.77759.906+1.8711.03123
A6s, paired72.96959.906+13.0631.21806
65s, all flops32.31143.133-10.8220.74910
65s, rainbow, ten or higher27.14143.133-15.9920.62924
65s, rainbow, nine or lower52.74343.133+9.6101.22280
65s, two-tone33.93943.133-9.1940.78685
65s, monotone38.22343.133-4.9100.88617
65s, paired27.03143.133-16.1020.62669

Does a shared suit matter?

The hands cannot hold a suit in common here, which leaves a single case and a single number: 67.69% for A6s.

A6s against 65s by suit overlap, in percent
DealsSpecific dealsShare of dealsA6s winsTies65s winsA6s equity
Share a suit00.00not possiblenot possiblenot possiblenot possible
No shared suit12100.0066.4612.45631.08367.689

How often this matchup comes up

The class pair covers 12 combinations of specific cards in a fixed seat order, 0.0007% of 1,624,350, and 24 (0.0015%) in either order.

A worked example

A $100 all-in from each player makes a $200 pot, and the exact equity says A6s gets $135.38 of it on average and 65s gets $64.62.

Think in thousands: about 665 of 1,000 go to A6s, about 311 go to 65s, and about 24 are chopped.

The same matchup from the other side

Swap the hands and you get 65s with 32.31% against A6s with 67.69%. We keep one page per matchup, with the better-ranked hand first.

Try As6s against 6h5h 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

The figures are counted, not estimated: 1,712,304 boards for every suit pattern of the 12 specific deals, with both seven-card hands compared each time. Equity gives half a win for a tie. For the flop rows, a board is counted once under each of the ten flops inside it.

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

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