KK vs AK
A pair of kings against ace-king, all in before the flop. The king in ace-king is nearly dead, so this is far from a race.
Also written as kings vs ace-king. Suitedness variants: KK vs AKs and KK vs AKo.
The numbers
KK
a pair of kings
68.9%
equity
AK
ace-king
31.1%
equity
| Outcome | Share of boards |
|---|---|
| KK wins | 68.5% |
| AK wins | 30.7% |
| Split pot | 0.8% |
Exact, not simulated. KK means a pair of kings and AK means ace-king: 48 legal ways to deal the two hands, and every one of the 1,712,304 possible five-card boards dealt for each — 82,190,592 board-and-hand combinations in total, each one scored by the same evaluator the calculator uses. Combinations that are the same hand with the suits renamed were counted once and weighted by how many they stand for: 3 distinct suit patterns stand in for all 48, which is the same answer for 16 times less work.
Why it comes out this way
The pair of kings is ahead before the flop, and only one of ace-king's cards — the ace — beats it on its own. Three aces are still in the deck. Ace-king's king is almost no help: only one king is left, and a king on the board gives the pair of kings three of a kind.
Ace-king wins 30.7% of the time, mostly by pairing the ace.
Suitedness is part of the answer: against the pair of kings, AKs wins 33.7% and AKo wins 29.7%. The AK wins figure in the table is the average of both, weighted the way they actually come out of a deck — one suited combination for every three offsuit.
The pot is split 0.8% of the time.
Open it in the calculator
The link below deals one typical version of this matchup — Kof spadesKof hearts against Aof spadesKof diamonds — into the calculator, with both hands set and the board empty. Add community cards one at a time to watch the equity move, or change a card to see how much the suits are worth.