No Donk, the Poker Arithmetic Lab

Field notes

The calculator accepts explicit hole cards, a board of zero to five cards, or a selected starting-hand range, with sampling choices from 50,000 to 1,000,000 trials when full enumeration is too large. Its proof area describes independent checks: classifying all 2,598,960 five-card hands, comparing a fast seven-card evaluator with all 21 subsets, and enumerating 19,600 flops for a pocket pair. The page presents these as runnable computations rather than stored answer tables.