AA vs 66 Odds: Pocket Aces vs Pocket Sixes

AA Wins

79.8%

66 Wins

18.3%

Tie

1.9%

What are the exact preflop odds of AA vs 66?

Pocket Aces (AA) win 79.8% of the time against Pocket Sixes (66) preflop. 66 wins 18.3% and ties account for 1.9% — slightly higher than most matchups because low-board community card straights create more chop scenarios. This is a domination matchup: AA holds two cards that rank far above 66's pair, leaving 66 with only set outs (the two remaining sixes) as its primary winning path.

How does 66 win against AA?

66's primary winning mechanism is flopping a set. With 2 outs in a 48-card deck after both hands are dealt, 66 flops a set approximately 11.8% of the time. When 66 does flop a set, it becomes roughly 88.2% favourite to win the hand. The remaining equity comes from low connected boards where 66 can pick up straight draw outs — a 4-5-7 flop gives 66 an open-ended straight draw (any 3 or 8 completes). At the very bottom of the medium-pair range, 66 has slightly more low-board connectivity than 77 or 88, meaning it encounters slightly more OESD opportunities on low board textures.

How do wheel boards (A-2-3, A-2-5) affect the AA vs 66 matchup?

Wheel boards create an interesting dynamic in AA vs 66. If 66 flops a set on an A-2-3 board, the situation resembles set-over-set (A-6-x), but AA has top set and 66 has middle set. On pure wheel boards without a six, AA retains its massive advantage. The interesting edge case is A-2-5: if 66 flops a set (A-6-x or 6-x-x), and the board is already part of a wheel draw, the runout can become complicated with multiple boat possibilities. However, these scenarios are rare and AA remains a favourite in virtually all of them.

Is 66 vs AA better or worse than 77 vs AA?

Virtually identical. AA vs 66 gives AA a 79.8% win rate while AA vs 77 gives AA 79.9% — a difference of just 0.1 percentage points. Both matchups share the same structural situation: two set outs, no overcard equity, and the same 11.8% probability of flopping a set. The tiny differences come from different low-board straight connectivity. The 1.9% tie rate for 66 vs AA is slightly higher than 77's 1.8%, reflecting more low-board chop scenarios where community card straights are possible.

Should 66 fold to a 4-bet preflop?

Against a specific opponent you know holds AA, folding 66 is correct — you're an 80% underdog. In practice, you rarely know this with certainty. Against a typical 4-bet range in cash games, 66 sits at the borderline: it can profitably set-mine if getting roughly 10:1 implied odds on the preflop call, but is generally a fold to a 4-bet jam with shallower stacks. In tournaments near the ICM bubble, folding 66 to a 4-bet jam is almost always the correct play regardless of the exact opponent range. 66 is at the bottom of pairs that might consider set-mining under the best circumstances.

What is the set-over-set scenario for AA vs 66 (A-6-x flop)?

The A-6-x flop creates a set-over-set situation: AA has top set (three aces) and 66 has bottom set (three sixes). From this point, AA wins 82.8% of the time. This occurs roughly 0.9% of all flops in this matchup. Despite both players having flopped sets, AA's top set dominates because for 66 to win, the board must pair in a way where 66's full house beats AA's full house — requiring specific non-ace board pairing. Both players will typically commit maximum chips in this spot, making it one of the most costly (and interesting) scenarios in the matchup.

How does 66 compare to other small pairs vs AA?

All small and medium pairs versus AA cluster tightly between 79.7%–80.3% win rate for AA. 66 at 79.8% is near the low end of this range. The structural reason is identical across all these matchups: two set outs, no overcard equity, same 11.8% set probability. The tiny variations come from different straight connectivity at different rank levels. For practical poker purposes, 66, 77, 88, and 99 all have essentially identical equity vs AA and require the same set-mining strategic approach.