Counting…
“Top” ranks every hand by its exact all-in equity against a random hand. Faded hands have no combinations left once the cards in play are removed.
Set each side as a hand or a range, paint the range on the grid, add a board if you like. The equity is exact: no sampling.
Counting…
“Top” ranks every hand by its exact all-in equity against a random hand. Faded hands have no combinations left once the cards in play are removed.
From the flop on, every pair of hands the two sides could hold is played out over every board still to come, after removing the cards in play. Any two cards against any two on a flop is 1,258,543,440 showdowns, counted in a few seconds at most.
Before the flop that would take hours, so the page uses a table made offline: the exact equity of each of the 169 kinds of starting hand against each other, over all 1,712,304 boards. Each matchup is weighted by how many pairs of hands it has once shared cards are removed, which makes the result exact for ranges of whole hands.