KQs vs 64s: preflop equity

If KQs and 64s get all the chips in before the flop, KQs owns 62.78% of the pot in the long run and 64s owns 37.22%.

KQs

62.78%

Wins 62.42%, ties 0.71%

64s

37.22%

Wins 36.87%, ties 0.71%

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

KQs against 64s: the numbers

Exact preflop results for KQs against 64s, in percent
HandWinsTiesLosesEquity
KQs62.4200.71336.86762.776
64s36.8670.71362.42037.224

Each side holds one of the suited hands: KQs and 64s. With no overlap in ranks, every card that pairs one hand is a card that does not pair the other.

The lead is steady rather than large, and the flop still has plenty of say in who wins. Ties are 0.71% of the outcomes here; each tied board gives both hands half the pot.

The hand ranking puts KQs at 16 and 64s at 138 out of 169 starting hands.

Boards behind the percentages: 27,396,864 counted in all
HandBoards won, aboutBoards tied, aboutBoards lost, about
KQs17,101,000195,00010,100,000
64s10,100,000195,00017,101,000

The board total is exact, 16 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages.

KQs against 64s read as odds
HandEquity as odds (to 1)Wins one deal inLoses one deal inPot odds needed to call (to 1)
KQs1.6861.6022.7120.593
64s0.5932.7121.6021.686

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

Split by what the flop looks like, KQs peaks at 70.11% on rainbow flops topped by a ten or better and bottoms out at 35.22% on low rainbow flops (nine high or lower). The lead reverses on low rainbow flops (nine high or lower): there 64s is the favorite even though KQs is ahead overall.

KQs against 64s by flop texture, in percent
FlopShare of flopsKQs winsTies64s winsKQs equity
Rainbow, ten or higher24.59569.9740.26429.76270.106
Rainbow, nine or lower6.31434.7670.89564.33835.215
Two-tone46.72761.9110.36137.72862.092
Monotone5.27358.2713.53238.19760.037
Paired17.09164.4371.38234.18165.128

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

A random hand would give KQs 63.40% and 64s 41.33%. Against each other the change is -0.62 points for KQs and -4.11 for 64s.

KQs and 64s here compared with each against a random hand, in percent
CaseEquity hereAgainst a random handChange in pointsTimes the random-hand equity
KQs, all flops62.77663.400-0.6240.99016
KQs, rainbow, ten or higher70.10663.400+6.7061.10577
KQs, rainbow, nine or lower35.21563.400-28.1850.55544
KQs, two-tone62.09263.400-1.3080.97937
KQs, monotone60.03763.400-3.3630.94696
KQs, paired65.12863.400+1.7281.02726
64s, all flops37.22441.333-4.1090.90059
64s, rainbow, ten or higher29.89441.333-11.4390.72325
64s, rainbow, nine or lower64.78541.333+23.4521.56739
64s, two-tone37.90841.333-3.4250.91714
64s, monotone39.96341.333-1.3700.96685
64s, paired34.87241.333-6.4610.84368

Does a shared suit matter?

The suit split reads 65.06% for KQs with a shared suit and 62.01% without one. KQs does better with a shared suit, by 3.05 points.

KQs against 64s by suit overlap, in percent
DealsSpecific dealsShare of dealsKQs winsTies64s winsKQs equity
Share a suit425.0064.6630.80334.53465.064
No shared suit1275.0061.6720.68337.64562.014

How often this matchup comes up

Counting specific cards, KQs against 64s appears in 16 of the 1,624,350 ordered heads-up deals (0.0010%), and in 32 when the seats are swapped too (0.0020%).

A worked example

Try it with money: two players each put in $100 and the whole board runs out every possible way. KQs averages $125.56 from the $200, up $25.56; 64s averages $74.44, down $25.56.

Over a long run, 1,000 deals split into about 624 for KQs, 369 for 64s and 7 tied.

The same matchup from the other side

64s versus KQs is this same page seen from the other hand: 37.22% for 64s, 62.78% for KQs.

KsQs against 6h4h 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 16 deals of KQs against 64s 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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