QQ vs 87s: preflop equity

Averaged over every possible board, QQ is ahead of 87s by 56.52 points of equity, 78.26% to 21.74%.

QQ

78.26%

Wins 78.08%, ties 0.37%

87s

21.74%

Wins 21.55%, ties 0.37%

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

QQ against 87s: the numbers

Exact preflop results for QQ against 87s, in percent
HandWinsTiesLosesEquity
QQ78.0760.36621.55878.259
87s21.5580.36678.07621.741

The first hand is a pocket pair; the second is a suited hand. Here a pair faces two cards that are both smaller, so the other hand needs to pair up and still be behind.

QQ is the clear favorite, though 87s gets there on roughly one board in 5. About 0.37% of boards chop the pot, which is why equity sits slightly above the win figure for both hands.

Place 3 of 169 belongs to QQ and place 100 belongs to 87s in the ranking against a random hand.

Boards behind the percentages: 41,095,296 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
QQ32,086,000150,0008,859,000
87s8,859,000150,00032,086,000

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.

QQ against 87s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
QQ3.6001.2814.6390.278
87s0.2784.6391.2813.600

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

Break the boards down by their first three cards and QQ is strongest on rainbow flops topped by a ten or better (82.80%) and weakest on low rainbow flops (nine high or lower) (67.78%). QQ stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

QQ against 87s by flop texture, in percent
FlopShare of flopsQQ winsTies87s winsQQ equity
Rainbow, ten or higher24.59582.6950.20217.10382.796
Rainbow, nine or lower6.31467.4820.59331.92567.779
Two-tone46.54576.2110.26623.52376.344
Monotone5.21271.9682.38025.65273.158
Paired17.33482.2290.17717.59482.317

A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank.

Compared with a random hand

Compared with a random opponent, this matchup shifts QQ from 79.93% by -1.67 points and 87s from 47.94% by -26.20 points.

QQ and 87s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
QQ, all flops78.25979.925-1.6660.97916
QQ, rainbow, ten or higher82.79679.925+2.8711.03592
QQ, rainbow, nine or lower67.77979.925-12.1460.84803
QQ, two-tone76.34479.925-3.5810.95520
QQ, monotone73.15879.925-6.7670.91533
QQ, paired82.31779.925+2.3921.02993
87s, all flops21.74147.936-26.1950.45354
87s, rainbow, ten or higher17.20447.936-30.7320.35890
87s, rainbow, nine or lower32.22147.936-15.7150.67217
87s, two-tone23.65647.936-24.2800.49349
87s, monotone26.84247.936-21.0940.55995
87s, paired17.68347.936-30.2530.36889

Does a shared suit matter?

Split by suits, the deals give QQ 78.83% when the hands overlap in a suit and 77.69% when they do not. QQ does better with a shared suit, by 1.14 points.

QQ against 87s by suit overlap, in percent
DealsSpecific dealsShare of dealsQQ winsTies87s winsQQ equity
Share a suit1250.0078.6220.40820.97078.826
No shared suit1250.0077.5310.32322.14677.693

How often this matchup comes up

The class pair covers 24 combinations of specific cards in a fixed seat order, 0.0015% of 1,624,350, and 48 (0.0030%) in either order.

A worked example

A $100 all-in from each player makes a $200 pot, and the exact equity says QQ gets $156.52 of it on average and 87s gets $43.48.

A thousand deals look like this: QQ takes 781, 87s takes 215, 4 are ties.

The same matchup from the other side

The mirror image, 87s against QQ, is 21.74% to 78.26%, and its address redirects to this page.

QsQh against 8d7d 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

The page is built from a full enumeration: 1,712,304 boards, every suit pattern of the 24 specific deals, both seven-card hands evaluated. A tie is worth half a win to each hand, and a board is tallied under each of its ten possible flops for the texture rows.

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

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