AA vs 66: Preflop Equity & Odds
| Hand | Win | Tie | Equity |
|---|---|---|---|
| AA (Pocket Aces) | 80.3% | 0.4% | 80.5% |
| 66 (Pocket Sixes) | 19.4% | 0.4% | 19.5% |
How AA vs 66 unfolds by street
Pocket Aces (AA) is still ahead on 89% of flops against 66, and the lead survives to the turn on 85%. 66 takes the lead on the other 11% of flops, almost always by flopping a set. These figures come from full board enumeration, not a simulation.
| Street | AA still ahead | 66 flipped the lead |
|---|---|---|
| Flop | 89% | 11% |
| Turn | 85% | 15% |
AA vs 66 is two made hands colliding before the flop, and the higher pair owns it: AA wins 80.3%, 66 wins 19.4%, and 0.4% of boards chop — 4.1-to-1. With nothing but the case pair to chase, 66 is set-mining all-in: it wins about 1 in 5, correct to stack off preflop but a hand that hates a clean runout.
At a final table the raw 80.5% / 19.5% split is only half the story — ICM bends it. As the 19.5% underdog, 66 pays an extra survival premium, so the chip-EV "close enough" call can be a clear ICM fold. The pure equity sets the floor; the payout ladder sets the real price.
As the bigger pair, AA, your whole job is to get the money in before a scare card — there's no fold here and slow-playing only lets 66 realize its set equity for free. As the smaller pair, the discipline is recognizing when stacks are deep enough that calling off 19.4% equity is a leak, even though folding pre feels impossible.
AA vs 66 FAQ
Who wins AA vs 66 preflop?
AA (Pocket Aces) is the favorite, winning 80.3% of all runouts, while 66 (Pocket Sixes) wins 19.4%. The remaining 0.4% are split pots. Counting splits as half, AA's preflop equity is 80.5%.
How often does 66 beat AA?
66 wins 19.4% of the time all-in preflop against AA — roughly 1 in 5 — so it needs good pot odds or fold equity to get the money in profitably.
Can you fold the smaller pair in AA vs 66?
Almost never preflop all-in — but the 19.4% the smaller pair wins (about 1 in 5) means that when stacks are very deep and the action screams a bigger pair, laying it down is a real, if rare, fold. Set-mining the lower pair works only with the implied odds to win a full stack when you spike.
Does AA hold up against 66 after the flop?
AA is still ahead on 89% of flops and stays ahead through the turn on 85% of boards; 66 takes the lead on the other 11% of flops. These are exact figures from full board enumeration.
Run any matchup in the free equity calculator · AA VS TT · AA VS 99 · AA VS 88 · AA VS 77 · AA VS 55 · AA VS 44