KQo vs Q9s: preflop equity

Over all 1,712,304 boards that can follow this deal, KQo finishes with 69.97% of the pot and Q9s with 30.03%.

KQo

69.97%

Wins 68.73%, ties 2.50%

Q9s

30.03%

Wins 28.77%, ties 2.50%

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

KQo against Q9s: the numbers

Exact preflop results for KQo against Q9s, in percent
HandWinsTiesLosesEquity
KQo68.7252.49628.77969.973
Q9s28.7792.49668.72530.027

KQo is an offsuit hand and Q9s is a suited hand. Because the hands share one rank, the one with the higher kicker is ahead when that rank pairs and the other hand is mostly drawing.

KQo is the clear favorite, though Q9s gets there on roughly one board in 3. Split pots make up 2.50% of the boards, and both equity figures count them as half a win each.

KQo ranks number 23 of 169 starting hands, and Q9s ranks number 43, by equity against a random hand.

Boards behind the percentages: 61,642,944 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
KQo42,364,0001,539,00017,740,000
Q9s17,740,0001,539,00042,364,000

The total is exact: 36 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.

KQo against Q9s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
KQo2.3301.4553.4750.429
Q9s0.4293.4751.4552.330

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 KQo's equity moves by 15.61 points, from 59.70% on low rainbow flops (nine high or lower) to 75.31% on rainbow flops topped by a ten or better. KQo stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal.

KQo against Q9s by flop texture, in percent
FlopShare of flopsKQo winsTiesQ9s winsKQo equity
Rainbow, ten or higher23.90574.1302.36323.50775.312
Rainbow, nine or lower7.04259.1721.05439.77459.699
Two-tone46.52767.2311.94730.82268.205
Monotone5.19263.5243.48732.98965.267
Paired17.33470.7184.44424.83872.940

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 KQo from 61.46% by +8.51 points and Q9s from 57.66% by -27.63 points.

KQo and Q9s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
KQo, all flops69.97361.456+8.5171.13859
KQo, rainbow, ten or higher75.31261.456+13.8561.22546
KQo, rainbow, nine or lower59.69961.456-1.7570.97141
KQo, two-tone68.20561.456+6.7491.10982
KQo, monotone65.26761.456+3.8111.06201
KQo, paired72.94061.456+11.4841.18687
Q9s, all flops30.02757.664-27.6370.52072
Q9s, rainbow, ten or higher24.68857.664-32.9760.42814
Q9s, rainbow, nine or lower40.30157.664-17.3630.69889
Q9s, two-tone31.79557.664-25.8690.55138
Q9s, monotone34.73357.664-22.9310.60233
Q9s, paired27.06057.664-30.6040.46927

Does a shared suit matter?

Two kinds of deal exist here. In 12 of them the hands share a suit and KQo holds 71.05%. In 24 they do not, and it holds 69.44%. KQo does better with a shared suit, by 1.61 points.

KQo against Q9s by suit overlap, in percent
DealsSpecific dealsShare of dealsKQo winsTiesQ9s winsKQo equity
Share a suit1233.3369.7532.58727.66071.047
No shared suit2466.6768.2112.45129.33869.436

How often this matchup comes up

KQo against Q9s is made up of 36 specific-card matchups in one seat order, 0.0022% of the 1,624,350 ordered deals, and 72 counting both seat orders, 0.0044%.

A worked example

To see what the equity is worth, imagine $100 each in a $200 pot. KQo is worth $139.94 on average (+$39.94); Q9s is worth $60.06 (-$39.94).

A thousand deals look like this: KQo takes 687, Q9s takes 288, 25 are ties.

The same matchup from the other side

If you came looking for Q9s against KQo, the numbers are the same with the hands swapped: 30.03% and 69.97%.

The calculator link fills in KsQh against Qd9d, 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

All 1,712,304 five-card boards are dealt for every suit pattern among the 36 specific deals of KQo against Q9s, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains.

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

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