A8s
63.36%
Wins 63.07%, ties 0.57%
43s
36.64%
Wins 36.36%, ties 0.57%
A8s against 43s: the numbers
| Hand | Wins | Ties | Loses | Equity |
|---|---|---|---|---|
| A8s | 63.071 | 0.571 | 36.358 | 63.356 |
| 43s | 36.358 | 0.571 | 63.071 | 36.644 |
A8s meets 43s, and both are suited hands. With no overlap in ranks, every card that pairs one hand is a card that does not pair the other.
That is a modest edge, the kind that shows up over many hands and is easy to miss in one. A split pot comes up on 0.57% of boards, so the wins and the equity differ by half of that.
Among the 169 starting hands, A8s is number 21 and 43s is number 150 by strength against a random hand.
| Hand | Boards won, about | Boards tied, about | Boards lost, about |
|---|---|---|---|
| A8s | 17,279,000 | 156,000 | 9,961,000 |
| 43s | 9,961,000 | 156,000 | 17,279,000 |
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.
| Hand | Equity as odds (to 1) | Wins one deal in | Loses one deal in | Pot odds needed to call (to 1) |
|---|---|---|---|---|
| A8s | 1.729 | 1.586 | 2.750 | 0.578 |
| 43s | 0.578 | 2.750 | 1.586 | 1.729 |
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
The flop changes the picture. A8s does best on rainbow flops topped by a ten or better, at 66.31%, and worst on low rainbow flops (nine high or lower), at 51.32%. A8s stays ahead on all five textures.
| Flop | Share of flops | A8s wins | Ties | 43s wins | A8s equity |
|---|---|---|---|---|---|
| Rainbow, ten or higher | 25.220 | 66.191 | 0.239 | 33.570 | 66.310 |
| Rainbow, nine or lower | 5.689 | 50.873 | 0.889 | 48.238 | 51.317 |
| Two-tone | 46.727 | 62.383 | 0.322 | 37.295 | 62.544 |
| Monotone | 5.273 | 58.499 | 3.653 | 37.848 | 60.325 |
| Paired | 17.091 | 65.818 | 0.686 | 33.496 | 66.161 |
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
Relative to a random opponent, A8s changes by +1.42 points (baseline 61.94%) and 43s by -2.00 points (baseline 38.64%).
| Case | Equity here | Against a random hand | Change in points | Times the random-hand equity |
|---|---|---|---|---|
| A8s, all flops | 63.356 | 61.944 | +1.412 | 1.02279 |
| A8s, rainbow, ten or higher | 66.310 | 61.944 | +4.366 | 1.07048 |
| A8s, rainbow, nine or lower | 51.317 | 61.944 | -10.627 | 0.82844 |
| A8s, two-tone | 62.544 | 61.944 | +0.600 | 1.00969 |
| A8s, monotone | 60.325 | 61.944 | -1.619 | 0.97386 |
| A8s, paired | 66.161 | 61.944 | +4.217 | 1.06808 |
| 43s, all flops | 36.644 | 38.642 | -1.998 | 0.94829 |
| 43s, rainbow, ten or higher | 33.690 | 38.642 | -4.952 | 0.87185 |
| 43s, rainbow, nine or lower | 48.683 | 38.642 | +10.041 | 1.25985 |
| 43s, two-tone | 37.456 | 38.642 | -1.186 | 0.96931 |
| 43s, monotone | 39.675 | 38.642 | +1.033 | 1.02673 |
| 43s, paired | 33.839 | 38.642 | -4.803 | 0.87571 |
Does a shared suit matter?
Of the deals of this matchup, 4 share a suit (A8s at 65.72%) and 12 do not (62.57%). A8s does better with a shared suit, by 3.15 points.
| Deals | Specific deals | Share of deals | A8s wins | Ties | 43s wins | A8s equity |
|---|---|---|---|---|---|---|
| Share a suit | 4 | 25.00 | 65.398 | 0.646 | 33.956 | 65.721 |
| No shared suit | 12 | 75.00 | 62.295 | 0.546 | 37.159 | 62.568 |
How often this matchup comes up
The class pair covers 16 combinations of specific cards in a fixed seat order, 0.0010% of 1,624,350, and 32 (0.0020%) in either order.
A worked example
Say each player puts $100 in before the flop, making a $200 pot. On average A8s takes back $126.72 of it, which is $26.72 more than it put in, and 43s takes back $73.28, $26.72 less than it put in.
Scaled to 1,000 deals, that is roughly 631 wins for A8s, 363 for 43s and 6 chopped pots.
The same matchup from the other side
One page covers both views. From 43s' side the equity is 36.64%, and from A8s' side it is 63.36%.
Keep exploring
Try As8s against 4h3h 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.
How this was computed
Method: exact enumeration. The 16 specific deals are grouped by suit pattern, each is run against all 1,712,304 boards, and both seven-card hands are scored. Equity adds half of every tie, and flop textures are tallied over the ten flops inside each board.
Source: our own exact count from the GeorgeLiPoker poker math library. No outside data is used.
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