--- title: "KK vs 43s: preflop equity" url: "https://georgelipoker.com/equity/kk-vs-43s.md" canonical_url: "https://georgelipoker.com/equity/kk-vs-43s" last_updated: "2026-10-23" type: "reference" summary: "KK is a big favorite over 43s before the flop: 79.54% to 20.46% equity, counted exactly over every board, with the split by flop type and suit." related: ["https://georgelipoker.com/equity/qq-vs-43s.md", "https://georgelipoker.com/equity/kk-vs-53s.md", "https://georgelipoker.com/equity/aa-vs-43s.md"] --- # KK vs 43s: preflop equity KK is a big favorite over 43s before the flop: 79.54% to 20.46% equity, counted exactly over every board, with the split by flop type and suit. Counting every board, the equity split is 79.54% for KK and 20.46% for 43s, so KK leads by 59.08 points. ## KK against 43s: the numbers **Exact preflop results for KK against 43s, in percent** | Hand | Wins | Ties | Loses | Equity | | --- | --- | --- | --- | --- | | KK | 79.295 | 0.482 | 20.223 | 79.536 | | 43s | 20.223 | 0.482 | 79.295 | 20.464 | One side is a pocket pair, the other is a suited hand. The pair outranks both of the other hand's cards, which is why the pair is a strong favorite. A lead of 59.08 points is large but not decisive: 43s still takes about 202 of every 1,000 deals. Ties are 0.48% of the outcomes here; each tied board gives both hands half the pot. KK ranks number 2 of 169 starting hands, and 43s ranks number 150, by equity against a random hand. **Boards behind the percentages: 41,095,296 counted in all** | Hand | Boards won, about | Boards tied, about | Boards lost, about | | --- | --- | --- | --- | | KK | 32,587,000 | 198,000 | 8,311,000 | | 43s | 8,311,000 | 198,000 | 32,587,000 | The board total is exact, 24 deals at 1,712,304 boards each. Won, tied and lost counts are rounded to the nearest thousand from the five-decimal percentages. **KK 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) | | --- | --- | --- | --- | --- | | KK | 3.887 | 1.261 | 4.945 | 0.257 | | 43s | 0.257 | 4.945 | 1.261 | 3.887 | 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 Rainbow flops topped by a ten or better are the best for KK (84.48%); low rainbow flops (nine high or lower) are the worst (68.32%). KK stays ahead on all five textures, but the swing between them is large, so how the flop looks matters a great deal. **KK against 43s by flop texture, in percent** | Flop | Share of flops | KK wins | Ties | 43s wins | KK equity | | --- | --- | --- | --- | --- | --- | | Rainbow, ten or higher | 24.595 | 84.351 | 0.247 | 15.402 | 84.475 | | Rainbow, nine or lower | 6.314 | 67.711 | 1.225 | 31.064 | 68.323 | | Two-tone | 46.545 | 77.456 | 0.413 | 22.131 | 77.663 | | Monotone | 5.212 | 72.890 | 2.605 | 24.505 | 74.193 | | Paired | 17.334 | 83.200 | 0.092 | 16.708 | 83.246 | Read the flop types this way: rainbow has three suits, two-tone has two cards of one suit, monotone has three, and paired repeats a rank. ## Compared with a random hand Compared with a random opponent, this matchup shifts KK from 82.40% by -2.86 points and 43s from 38.64% by -18.18 points. **KK 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 | | --- | --- | --- | --- | --- | | KK, all flops | 79.536 | 82.396 | -2.860 | 0.96529 | | KK, rainbow, ten or higher | 84.475 | 82.396 | +2.079 | 1.02523 | | KK, rainbow, nine or lower | 68.323 | 82.396 | -14.073 | 0.82920 | | KK, two-tone | 77.663 | 82.396 | -4.733 | 0.94256 | | KK, monotone | 74.193 | 82.396 | -8.203 | 0.90044 | | KK, paired | 83.246 | 82.396 | +0.850 | 1.01032 | | 43s, all flops | 20.464 | 38.642 | -18.178 | 0.52958 | | 43s, rainbow, ten or higher | 15.525 | 38.642 | -23.117 | 0.40176 | | 43s, rainbow, nine or lower | 31.677 | 38.642 | -6.965 | 0.81976 | | 43s, two-tone | 22.337 | 38.642 | -16.305 | 0.57805 | | 43s, monotone | 25.807 | 38.642 | -12.835 | 0.66785 | | 43s, paired | 16.754 | 38.642 | -21.888 | 0.43357 | ## Does a shared suit matter? The suit split reads 80.12% for KK with a shared suit and 78.95% without one. KK does better with a shared suit, by 1.17 points. **KK against 43s by suit overlap, in percent** | Deals | Specific deals | Share of deals | KK wins | Ties | 43s wins | KK equity | | --- | --- | --- | --- | --- | --- | --- | | Share a suit | 12 | 50.00 | 79.862 | 0.519 | 19.619 | 80.121 | | No shared suit | 12 | 50.00 | 78.727 | 0.445 | 20.828 | 78.950 | ## How often this matchup comes up This page stands for 24 specific-card matchups (0.0015% of 1,624,350 ordered deals), or 48 once you count the seats both ways (0.0030%). ## A worked example With $100 from each side, the $200 pot is split on average as $159.08 for KK and $40.92 for 43s; the first side gains $59.08 per all-in and the second gives up $59.08. Out of 1,000 deals you should see around 793 outright wins for KK, 202 for 43s, and 5 split pots. ## The same matchup from the other side Read it from the other side: 43s against KK is the same matchup with the numbers swapped, so 43s holds 20.46% and KK holds 79.54%. That address sends you back to this page. ## Keep exploring Try KsKh against 4d3d 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 KsKh against 4d3d in the equity calculator](https://georgelipoker.com/tools/equity-calculator.md#p1=KsKh&p2=4d3d) - [KK combos](https://georgelipoker.com/combos/kk.md) - [43s combos](https://georgelipoker.com/combos/43s.md) - [QQ vs 43s](https://georgelipoker.com/equity/qq-vs-43s.md) - [KK vs 53s](https://georgelipoker.com/equity/kk-vs-53s.md) - [AA vs 43s](https://georgelipoker.com/equity/aa-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 24 specific deals of KK 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 - [QQ vs 43s: preflop equity](https://georgelipoker.com/equity/qq-vs-43s.md) - [KK vs 53s: preflop equity](https://georgelipoker.com/equity/kk-vs-53s.md) - [AA vs 43s: preflop equity](https://georgelipoker.com/equity/aa-vs-43s.md)