ATs vs 66 equity
Preflop, ATs beats 66 with exact equity 48.31% vs 51.69%: ATs wins 48.11%, 66 wins 51.48%, ties 0.41%. Computed by exhaustively enumerating all 10,273,824 deals.
| ATs Win | 48.11% |
|---|---|
| 66 Win | 51.48% |
| Tie | 0.41% |
| ATs Equity (win + tie/2) | 48.31% |
| 66 Equity (win + tie/2) | 51.69% |
| Boards enumerated | 10,273,824 |
| Suit combinations | 6 |
| Losing frequency | ATs loses 1 in 1.9 |
Note: class-average values. Specific suit combinations (e.g. shared suits) shift the numbers by a few tenths of a percent.
FAQ
Who wins more often, ATs or 66?
66 is ahead: ATs has 48.31% equity vs 51.69% (exact enumeration).
How often do ATs vs 66 tie?
Ties occur 0.41% of the time (42,309 of 10,273,824 outcomes).
Are these numbers simulated?
No. All 10,273,824 board combinations are exhaustively enumerated — mathematically exact and reproducible.
Related
Figures from app/data/matchup-matrix (exhaustive engine scripts/gen-matchup-matrix.mjs, cross-validated against lib/poker-equity.ts)
Cite this page: Pailiku, “ATs vs 66 equity”, pailiku.com/matchups/ats-vs-66 (2026).