--- title: "A6s vs 64s: preflop equity" url: "https://georgelipoker.com/equity/a6s-vs-64s.md" canonical_url: "https://georgelipoker.com/equity/a6s-vs-64s" last_updated: "2026-10-23" type: "reference" summary: "A6s is a big favorite over 64s before the flop: 69.18% to 30.82% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/a6s-vs-53s.md", "https://georgelipoker.com/equity/a6s-vs-43s.md", "https://georgelipoker.com/equity/kto-vs-64s.md"] --- # A6s vs 64s: preflop equity A6s is a big favorite over 64s before the flop: 69.18% to 30.82% equity, counted exactly over every board, with the split by flop type and suit. Before any board card is dealt, A6s holds 69.18% equity against 64s, which leaves 64s with 30.82%. ## A6s against 64s: the numbers **Exact preflop results for A6s against 64s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | A6s | 67.908 | 2.544 | 29.548 | 69.180 | | 64s | 29.548 | 2.544 | 67.908 | 30.820 | The matchup is suited hands on both sides, A6s against 64s. Sharing a rank is the signature of a dominated hand, since the weaker hand is usually out-kicked when the shared rank shows up. A lead of 38.36 points is large but not decisive: 64s still takes about 296 of every 1,000 deals. A split pot comes up on 2.54% of boards, so the wins and the equity differ by half of that. The hand ranking puts A6s at 31 and 64s at 138 out of 169 starting hands. **Boards behind the percentages: 20,547,648 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | A6s | 13,953,000 | 523,000 | 6,071,000 | | 64s | 6,071,000 | 523,000 | 13,953,000 | 12 specific deals times 1,712,304 boards gives the exact total. The won, tied and lost counts are approximations from the five-decimal percentages, rounded to the nearest thousand. **A6s against 64s read as odds** | Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) | | --- | --- | --- | --- | --- | | A6s | 2.245 | 1.473 | 3.384 | 0.446 | | 64s | 0.446 | 3.384 | 1.473 | 2.245 | The last column is the break-even price: the pot odds a call needs to offer, as a ratio of pot to call. ## Who is ahead on which flops Break the boards down by their first three cards and A6s is strongest on paired flops (74.17%) and weakest on low rainbow flops (nine high or lower) (51.53%). A6s stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **A6s against 64s by flop texture, in percent** | Flop | Share of flops | A6s wins | Ties | 64s wins | A6s equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 25.254 | 73.276 | 1.501 | 25.223 | 74.026 | | Rainbow, nine or lower | 5.654 | 47.703 | 7.649 | 44.648 | 51.527 | | Two-tone | 46.543 | 66.418 | 2.266 | 31.316 | 67.551 | | Monotone | 5.215 | 60.525 | 4.550 | 34.925 | 62.800 | | Paired | 17.334 | 72.898 | 2.544 | 24.558 | 74.170 | Rainbow flops have three suits, two-tone flops repeat one suit, monotone flops are all one suit, and paired flops repeat a rank. ## Compared with a random hand Against one random hand instead, A6s holds 59.91% and 64s holds 41.33%. Facing each other changes that by +9.27 points for A6s and -10.51 points for 64s. **A6s and 64s 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 | | --- | --- | --- | --- | --- | | A6s, all flops | 69.180 | 59.906 | +9.274 | 1.15481 | | A6s, rainbow, ten or higher | 74.026 | 59.906 | +14.120 | 1.23570 | | A6s, rainbow, nine or lower | 51.527 | 59.906 | -8.379 | 0.86013 | | A6s, two-tone | 67.551 | 59.906 | +7.645 | 1.12762 | | A6s, monotone | 62.800 | 59.906 | +2.894 | 1.04831 | | A6s, paired | 74.170 | 59.906 | +14.264 | 1.23811 | | 64s, all flops | 30.820 | 41.333 | -10.513 | 0.74565 | | 64s, rainbow, ten or higher | 25.974 | 41.333 | -15.359 | 0.62841 | | 64s, rainbow, nine or lower | 48.473 | 41.333 | +7.140 | 1.17274 | | 64s, two-tone | 32.449 | 41.333 | -8.884 | 0.78506 | | 64s, monotone | 37.200 | 41.333 | -4.133 | 0.90001 | | 64s, paired | 25.830 | 41.333 | -15.503 | 0.62492 | ## Does a shared suit matter? A shared suit is impossible for this matchup, so A6s' 69.18% is the answer for every suit pattern. **A6s against 64s by suit overlap, in percent** | Deals | Specific deals | Share of deals | A6s wins | Ties | 64s wins | A6s equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 0 | 0.00 | not possible | not possible | not possible | not possible | | No shared suit | 12 | 100.00 | 67.908 | 2.544 | 29.548 | 69.180 | ## How often this matchup comes up Exactly 12 specific deals fit this matchup in one seat order, which is 0.0007% of 1,624,350; both orders together give 24, or 0.0015%. ## A worked example Say each player puts $100 in before the flop, making a $200 pot. On average A6s takes back $138.36 of it, which is $38.36 more than it put in, and 64s takes back $61.64, $38.36 less than it put in. A thousand deals look like this: A6s takes 679, 64s takes 296, 25 are ties. ## The same matchup from the other side If you came looking for 64s against A6s, the numbers are the same with the hands swapped: 30.82% and 69.18%. ## Keep exploring Try As6s against 6h4h 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 As6s against 6h4h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=As6s&p2=6h4h) - [A6s combos](https://georgelipoker.com/combos/a6s.md) - [64s combos](https://georgelipoker.com/combos/64s.md) - [A6s vs 53s](https://georgelipoker.com/equity/a6s-vs-53s.md) - [A6s vs 43s](https://georgelipoker.com/equity/a6s-vs-43s.md) - [KTo vs 64s](https://georgelipoker.com/equity/kto-vs-64s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed Nothing here is simulated. The 12 deals of A6s against 64s fall into a few suit patterns, each dealt against all 1,712,304 boards, with both best five-card hands compared on every board. Ties give each hand half a win, and the flop rows count a board under each of its ten flops. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [A6s vs 53s: preflop equity](https://georgelipoker.com/equity/a6s-vs-53s.md) - [A6s vs 43s: preflop equity](https://georgelipoker.com/equity/a6s-vs-43s.md) - [KTo vs 64s: preflop equity](https://georgelipoker.com/equity/kto-vs-64s.md)