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KK vs AJs

KK
VS
AJs
67.8%
equity for KK — AJs takes 32.2%

Pair against one overcard — roughly 70/30 in the pair's favour.

KK Win
67.6%
Tie
0.4%
KK Lose
32.0%
Card combinations
24
KK vs random
82.5% · #2
AJs vs random
65.4% · #11
Breakdown

Win, tie and loss for KK

Win 67.6%Lose 32.0%

When KK and AJs get all in before the flop, KK wins 67.8% of the time and AJs takes 32.2%. Broken down, KK wins outright 67.6%, chops 0.4% and loses 32.0% — a margin of 35.6 points. Pair against one overcard — roughly 70/30 in the pair's favour.

The same matchup shifts depending on how the suits overlap. With no shared suit the number is 67.5% (for example Ks Kh against Ad Jd); with one shared suit it is 68.1% (Ks Kh against As Js). That is a spread of 0.65 points across the 24 distinct card combinations, and it comes almost entirely from whether the two hands are fighting over the same flush.

Add a third player holding a random hand and the split becomes KK 58.1%, AJs 28.4%, random 13.5%. KK gives up 9.7 points and AJs gives up 3.8, so the favourite loses more than the underdog does. Extra players always eat into the leader's share faster than into anyone else's.

Taken on their own, KK is worth 82.5% against a random hand (rank 2 of 169) and AJs is worth 65.4% (rank 11). The gap between them in the ranking is only 17.1 points, yet head to head the gap is 35.6 points — a reminder that a ranking table and a direct matchup are two different questions.

Framed as a run of one hundred identical all-ins, KK scoops roughly 68 pots, splits about one, and loses the remaining 32. Against eight random opponents rather than this one specific hand, KK would be down to 29.6% and AJs to 20.1%, so the shape of this particular confrontation matters far more than either hand's standing in the overall ranking.

From AJs's side, 32.2% is the break-even point for calling an all-in at 2.11:1 pot odds. Put another way, the call is profitable as long as the amount you have to put in is less than 32.2% of the pot you are playing for. KK holds the other 67.8% of that same pot.

Two caveats keep this figure honest. First, it is showdown equity across all 24 card combinations with five board cards still to come — there is no fold equity in it, so the value of shoving in practice is usually higher than the raw percentage suggests. Second, it assumes AJs really does hold exactly AJs; against the wider range a player would actually get all in with, KK's 67.8% moves. Use the individual pages for KK and AJs to see how each of them fares against all 168 other holdings before treating this single pairing as the whole picture.

By shared suits

Overlapping suits move the number

200,000 simulated showdowns per condition. The example column shows one concrete four-card layout.

ConditionExampleCombosKK EquityWinTieLose
No shared suitKs Kh vs Ad Jd1267.5%67.3%0.4%32.3%
One shared suitKs Kh vs As Js1268.1%67.9%0.4%31.6%
Three-way

Adding a random third hand

200,000 simulated showdowns, with the third hand dealt at random each time.

KK
58.1%
vs heads-up -9.7pt
AJs
28.4%
vs heads-up -3.8pt
Random third hand
13.5%
Player count

At a bigger table

Random opponentsKKAJs
182.5%65.4%
268.9%48.0%
449.3%32.2%
829.6%20.1%

Related

FAQ

KK or AJs — which is ahead preflop?

KK is the favourite. KK takes 67.8% and AJs 32.2%, a margin of 35.6 points, with 0.4% of hands ending in a chop.

Do the suits change KK vs AJs?

Yes. With no shared suit it is 67.5%, and with one shared suit it is 68.1% — a swing of up to 0.65 points.

What happens three-way?

With one extra random hand in the pot the split is KK 58.1%, AJs 28.4%, random 13.5%. KK drops 9.7 points compared with heads-up.

428 words / 30 distinct figures — Method