--- title: "A6s vs 43s: preflop equity" url: "https://georgelipoker.com/equity/a6s-vs-43s.md" canonical_url: "https://georgelipoker.com/equity/a6s-vs-43s" last_updated: "2026-10-23" type: "reference" summary: "A6s is a big favorite over 43s before the flop: 62.90% to 37.11% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/kto-vs-43s.md", "https://georgelipoker.com/equity/a6s-vs-53s.md", "https://georgelipoker.com/equity/a5s-vs-43s.md"] --- # A6s vs 43s: preflop equity A6s is a big favorite over 43s before the flop: 62.90% to 37.11% equity, counted exactly over every board, with the split by flop type and suit. Averaged over every possible board, A6s is ahead of 43s by 25.80 points of equity, 62.90% to 37.10%. ## A6s against 43s: the numbers **Exact preflop results for A6s against 43s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | A6s | 62.601 | 0.588 | 36.811 | 62.895 | | 43s | 36.811 | 0.588 | 62.601 | 37.105 | This is a contest between two suited hands, A6s and 43s. The two hands share no rank, which makes this a pure matchup of card strength, straight chances and flush chances. The lead is steady rather than large, and the flop still has plenty of say in who wins. A split pot comes up on 0.59% of boards, so the wins and the equity differ by half of that. Ranked by equity against a random hand, A6s is number 31 of the 169 starting hands and 43s is number 150. **Boards behind the percentages: 27,396,864 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | A6s | 17,151,000 | 161,000 | 10,085,000 | | 43s | 10,085,000 | 161,000 | 17,151,000 | The board total is exact, 16 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **A6s against 43s 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 | 1.695 | 1.597 | 2.717 | 0.590 | | 43s | 0.590 | 2.717 | 1.597 | 1.695 | 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 The flop changes the picture. A6s does best on paired flops, at 66.52%, and worst on low rainbow flops (nine high or lower), at 48.84%. 43s is ahead on low rainbow flops (nine high or lower), even though it trails A6s when every flop is counted. **A6s against 43s by flop texture, in percent** | Flop | Share of flops | A6s wins | Ties | 43s wins | A6s equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 25.220 | 65.973 | 0.255 | 33.772 | 66.100 | | Rainbow, nine or lower | 5.689 | 48.370 | 0.943 | 50.687 | 48.841 | | Two-tone | 46.727 | 61.744 | 0.338 | 37.918 | 61.913 | | Monotone | 5.273 | 57.845 | 3.659 | 38.496 | 59.675 | | Paired | 17.091 | 66.175 | 0.694 | 33.131 | 66.522 | A rainbow flop shows three suits, a two-tone flop repeats one suit, a monotone flop is a single suit, and a paired flop repeats a rank. ## Compared with a random hand Start from the random-hand figures, 59.91% for A6s and 38.64% for 43s. This opponent changes them by +2.99 and -1.54 points. **A6s and 43s 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 | 62.895 | 59.906 | +2.989 | 1.04989 | | A6s, rainbow, ten or higher | 66.100 | 59.906 | +6.194 | 1.10340 | | A6s, rainbow, nine or lower | 48.841 | 59.906 | -11.065 | 0.81529 | | A6s, two-tone | 61.913 | 59.906 | +2.007 | 1.03350 | | A6s, monotone | 59.675 | 59.906 | -0.231 | 0.99614 | | A6s, paired | 66.522 | 59.906 | +6.616 | 1.11044 | | 43s, all flops | 37.105 | 38.642 | -1.537 | 0.96022 | | 43s, rainbow, ten or higher | 33.900 | 38.642 | -4.742 | 0.87728 | | 43s, rainbow, nine or lower | 51.159 | 38.642 | +12.517 | 1.32392 | | 43s, two-tone | 38.087 | 38.642 | -0.555 | 0.98564 | | 43s, monotone | 40.325 | 38.642 | +1.683 | 1.04355 | | 43s, paired | 33.478 | 38.642 | -5.164 | 0.86636 | ## Does a shared suit matter? Split by suits, the deals give A6s 65.28% when the hands overlap in a suit and 62.10% when they do not. A6s does better with a shared suit, by 3.18 points. **A6s against 43s by suit overlap, in percent** | Deals | Specific deals | Share of deals | A6s wins | Ties | 43s wins | A6s equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 4 | 25.00 | 64.952 | 0.661 | 34.387 | 65.283 | | No shared suit | 12 | 75.00 | 61.818 | 0.563 | 37.619 | 62.099 | ## How often this matchup comes up Counting specific cards, A6s against 43s appears in 16 of the 1,624,350 ordered heads-up deals (0.0010%), and in 32 when the seats are swapped too (0.0020%). ## A worked example With $100 from each side, the $200 pot is split on average as $125.80 for A6s and $74.20 for 43s; the first side gains $25.80 per all-in and the second gives up $25.80. Think in thousands: about 626 of 1,000 go to A6s, about 368 go to 43s, and about 6 are chopped. ## The same matchup from the other side 43s against A6s adds nothing new: it is 37.10% for 43s and 62.90% for A6s, the same figures reversed. ## Keep exploring As6s against 4h3h is a ready-made deal for the calculator, with no suit in common between the hands. The neighboring matchups below replace one hand with another of similar strength. - [Open As6s against 4h3h in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=As6s&p2=4h3h) - [A6s combos](https://georgelipoker.com/combos/a6s.md) - [43s combos](https://georgelipoker.com/combos/43s.md) - [KTo vs 43s](https://georgelipoker.com/equity/kto-vs-43s.md) - [A6s vs 53s](https://georgelipoker.com/equity/a6s-vs-53s.md) - [A5s vs 43s](https://georgelipoker.com/equity/a5s-vs-43s.md) - [All hand matchups](https://georgelipoker.com/equity.md) ## How this was computed All 1,712,304 five-card boards are dealt for every suit pattern among the 16 specific deals of A6s against 43s, and both hands are scored on each. That is a full count, so the percentages are exact. Ties are half a win each, and each board appears once per flop it contains. Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used. ## Related - [KTo vs 43s: preflop equity](https://georgelipoker.com/equity/kto-vs-43s.md) - [A6s vs 53s: preflop equity](https://georgelipoker.com/equity/a6s-vs-53s.md) - [A5s vs 43s: preflop equity](https://georgelipoker.com/equity/a5s-vs-43s.md)