A6s vs 86s: preflop equity

Before any board card is dealt, A6s holds 67.98% equity against 86s, which leaves 86s with 32.02%.

A6s

67.98%

Wins 66.94%, ties 2.08%

86s

32.02%

Wins 30.98%, ties 2.08%

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

A6s against 86s: the numbers

Exact preflop results for A6s against 86s, in percent
HandWinsTiesLosesEquity
A6s66.9432.08330.97467.984
86s30.9742.08366.94332.016

Each side holds one of the suited hands: A6s and 86s. Sharing a rank is the signature of a dominated hand, since the weaker hand is usually out-kicked when the shared rank shows up.

A6s is well ahead, and 86s needs a specific kind of board to catch up. A split pot comes up on 2.08% of boards, so the wins and the equity differ by half of that.

For context, A6s sits at number 31 of 169 starting hands and 86s at number 110 when each is run against a random hand.

Boards behind the percentages: 20,547,648 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
A6s13,755,000428,0006,364,000
86s6,364,000428,00013,755,000

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 86s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
A6s2.1231.4943.2290.471
86s0.4713.2291.4942.123

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

Break the boards down by their first three cards and A6s is strongest on rainbow flops topped by a ten or better (72.62%) and weakest on low rainbow flops (nine high or lower) (51.41%). A6s stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

A6s against 86s by flop texture, in percent
FlopShare of flopsA6s winsTies86s winsA6s equity
Rainbow, ten or higher25.25472.0231.19026.78772.618
Rainbow, nine or lower5.65448.4615.90045.63951.411
Two-tone46.54365.5751.78432.64166.467
Monotone5.21559.7624.18336.05561.853
Paired17.33471.4032.31226.28572.559

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

How much does the opponent matter? Compared with its random-hand 59.91%, A6s changes by +8.07 points, and 86s, from 46.24%, by -14.22.

A6s and 86s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
A6s, all flops67.98459.906+8.0781.13484
A6s, rainbow, ten or higher72.61859.906+12.7121.21220
A6s, rainbow, nine or lower51.41159.906-8.4950.85819
A6s, two-tone66.46759.906+6.5611.10952
A6s, monotone61.85359.906+1.9471.03250
A6s, paired72.55959.906+12.6531.21121
86s, all flops32.01646.243-14.2270.69234
86s, rainbow, ten or higher27.38246.243-18.8610.59213
86s, rainbow, nine or lower48.58946.243+2.3461.05073
86s, two-tone33.53346.243-12.7100.72515
86s, monotone38.14746.243-8.0960.82492
86s, paired27.44146.243-18.8020.59341

Does a shared suit matter?

A shared suit is impossible for this matchup, so A6s' 67.98% is the answer for every suit pattern.

A6s against 86s by suit overlap, in percent
DealsSpecific dealsShare of dealsA6s winsTies86s winsA6s equity
Share a suit00.00not possiblenot possiblenot possiblenot possible
No shared suit12100.0066.9432.08330.97467.984

How often this matchup comes up

Exactly 12 specific deals fit this matchup in one seat order, which is 0.0007% of 1,624,350; both orders together give 24, or 0.0015%.

A worked example

To see what the equity is worth, imagine $100 each in a $200 pot. A6s is worth $135.96 on average (+$35.96); 86s is worth $64.04 (-$35.96).

Scaled to 1,000 deals, that is roughly 669 wins for A6s, 310 for 86s and 21 chopped pots.

The same matchup from the other side

86s versus A6s is this same page seen from the other hand: 32.02% for 86s, 67.98% for A6s.

As6s against 8h6h is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength.

How this was computed

Nothing here is simulated. The 12 deals of A6s against 86s 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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