--- title: "66 vs QTo: preflop equity" url: "https://georgelipoker.com/equity/66-vs-qto.md" canonical_url: "https://georgelipoker.com/equity/66-vs-qto" last_updated: "2026-10-23" type: "reference" summary: "66 vs QTo is close to a coin flip before the flop: 51.98% to 48.02% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/66-vs-44.md", "https://georgelipoker.com/equity/66-vs-j9s.md", "https://georgelipoker.com/equity/a9s-vs-qto.md"] --- # 66 vs QTo: preflop equity 66 vs QTo is close to a coin flip before the flop: 51.98% to 48.02% equity, counted exactly over every board, with the split by flop type and suit. If 66 and QTo get all the chips in before the flop, 66 owns 51.98% of the pot in the long run and QTo owns 48.02%. ## 66 against QTo: the numbers **Exact preflop results for 66 against QTo, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | 66 | 51.720 | 0.518 | 47.762 | 51.979 | | QTo | 47.762 | 0.518 | 51.720 | 48.021 | 66 and QTo are a pocket pair and an offsuit hand, in that order. A pair against two higher cards is the classic race: the pair is usually a small favorite or close to even, and each overcard that pairs is a way to take the lead. With only 3.96 points between them, the board decides this matchup far more than the cards in hand. Of every 100 boards, about 0.52 are split pots, and the equity figures already include them. 66 ranks number 17 of 169 starting hands, and QTo ranks number 47, by equity against a random hand. **Boards behind the percentages: 123,285,888 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | 66 | 63,763,000 | 639,000 | 58,884,000 | | QTo | 58,884,000 | 639,000 | 63,763,000 | The total is exact: 72 specific deals times 1,712,304 boards. The three counts are approximate, worked out from the percentages to five decimals and rounded to the nearest thousand. **66 against QTo read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | 66 | 1.082 | 1.933 | 2.094 | 0.924 | | QTo | 0.924 | 2.094 | 1.933 | 1.082 | The final column gives the least the pot must offer for each unit called for a call to break even at this equity. ## Who is ahead on which flops Across the five flop textures 66's equity moves by 33.95 points, from 44.35% on rainbow flops topped by a ten or better to 78.30% on low rainbow flops (nine high or lower). The overall edge for 66 hides rainbow flops topped by a ten or better and monotone flops, where QTo comes out in front. **66 against QTo by flop texture, in percent** | Flop | Share of flops | 66 wins | Ties | QTo wins | 66 equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.717 | 44.220 | 0.266 | 55.514 | 44.353 | | Rainbow, nine or lower | 6.314 | 78.002 | 0.586 | 21.412 | 78.295 | | Two-tone | 46.485 | 50.872 | 0.321 | 48.807 | 51.033 | | Monotone | 5.151 | 48.341 | 1.782 | 49.877 | 49.232 | | Paired | 17.333 | 56.121 | 1.008 | 42.871 | 56.625 | Flop types: rainbow means three different suits, two-tone means one suit twice, monotone means one suit three times, paired means a repeated rank. ## Compared with a random hand How much does the opponent matter? Compared with its random-hand 63.29%, 66 changes by -11.31 points, and QTo, from 57.29%, by -9.27. **66 and QTo here compared with each against a random hand, in percent** | Case | Equity here | Against a random hand | Change in points | Times the random-hand equity | | --- | --- | --- | --- | --- | | 66, all flops | 51.979 | 63.285 | -11.306 | 0.82135 | | 66, rainbow, ten or higher | 44.353 | 63.285 | -18.932 | 0.70085 | | 66, rainbow, nine or lower | 78.295 | 63.285 | +15.010 | 1.23718 | | 66, two-tone | 51.033 | 63.285 | -12.252 | 0.80640 | | 66, monotone | 49.232 | 63.285 | -14.053 | 0.77794 | | 66, paired | 56.625 | 63.285 | -6.660 | 0.89476 | | QTo, all flops | 48.021 | 57.291 | -9.270 | 0.83819 | | QTo, rainbow, ten or higher | 55.647 | 57.291 | -1.644 | 0.97130 | | QTo, rainbow, nine or lower | 21.705 | 57.291 | -35.586 | 0.37886 | | QTo, two-tone | 48.967 | 57.291 | -8.324 | 0.85471 | | QTo, monotone | 50.768 | 57.291 | -6.523 | 0.88614 | | QTo, paired | 43.375 | 57.291 | -13.916 | 0.75710 | ## Does a shared suit matter? Of the deals of this matchup, 60 share a suit (66 at 51.89%) and 12 do not (52.42%). 66 does better with no shared suit, by 0.53 points. **66 against QTo by suit overlap, in percent** | Deals | Specific deals | Share of deals | 66 wins | Ties | QTo wins | 66 equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 60 | 83.33 | 51.624 | 0.534 | 47.842 | 51.891 | | No shared suit | 12 | 16.67 | 52.203 | 0.441 | 47.356 | 52.424 | ## How often this matchup comes up 66 against QTo is made up of 72 specific-card matchups in one seat order, 0.0044% of the 1,624,350 ordered deals, and 144 counting both seat orders, 0.0089%. ## A worked example With $100 from each side, the $200 pot is split on average as $103.96 for 66 and $96.04 for QTo; the first side gains $3.96 per all-in and the second gives up $3.96. Think in thousands: about 517 of 1,000 go to 66, about 478 go to QTo, and about 5 are chopped. ## The same matchup from the other side QTo against 66 adds nothing new: it is 48.02% for QTo and 51.98% for 66, the same figures reversed. ## Keep exploring Try 6s6h against QdTc in the calculator: the hands share no suit, and every card can be changed. The links after it are the closest matchups in the ranking. - [Open 6s6h against QdTc in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=6s6h&p2=QdTc) - [66 combos](https://georgelipoker.com/combos/66.md) - [QTo combos](https://georgelipoker.com/combos/qto.md) - [66 vs 44](https://georgelipoker.com/equity/66-vs-44.md) - [66 vs J9s](https://georgelipoker.com/equity/66-vs-j9s.md) - [A9s vs QTo](https://georgelipoker.com/equity/a9s-vs-qto.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Each figure is a complete count over boards. Take the 72 specific deals, group them by suit pattern, deal all 1,712,304 boards against each, and compare the two seven-card hands. Equity counts a tie as half a win; the flop rows use every one of a board's ten flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [66 vs 44: preflop equity](https://georgelipoker.com/equity/66-vs-44.md) - [66 vs J9s: preflop equity](https://georgelipoker.com/equity/66-vs-j9s.md) - [A9s vs QTo: preflop equity](https://georgelipoker.com/equity/a9s-vs-qto.md)