Who has the range advantage on 2 4 7 rainbow?
Small Button edge: the Button has nearly all the overpairs, and the Button has more overcard hands.
BTN vs BB single-raised pot: the button opens, the big blind calls.
dry / rainbow
Share of each range that is sets, two pair, overpairs, straights or better, and combo draws. This is who wins the big pots.
With the range and nut edge together, a small bet with the Button's whole range profits. Try swapping the lowest card for a middle connector and watch the edge move.
Neither range wants this flop, and that is exactly why the raiser keeps the edge. The button arrives with unpaired big cards, but the big blind is full of the same misses with worse backup, so the preflop lead survives contact.
Range breakdown
| Category | Button | Big Blind | Edge |
|---|---|---|---|
| Overpair | 8.1% | 0.0% | +8.1% BTN |
| Overcards | 58.1% | 50.6% | +7.6% BTN |
| Air | 10.9% | 14.9% | +4.1% BB |
| Gutshot | 4.7% | 8.0% | +3.4% BB |
| Bottom Pair | 1.2% | 4.3% | +3.1% BB |
| Underpair | 3.5% | 5.2% | +1.7% BB |
Sorted by impact. Computed exhaustively by the Poker Shark equity engine over both full ranges.
Knowing the edge is step one
Playing it against opponents who miss it is where the money comes from. Train on boards like this one.
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