A donk bet is leading into the player who raised. A donk is also the player who keeps doing it and cannot say why. This is for the second problem. Exact evaluator, real equity, and a panel that proves its own arithmetic on your phone.
Write cards as rank then suit, no spaces. As Kh Td 7c 2s.
The exact chance a draw gets there, next to the shortcut most players use.
Suited above the diagonal, pairs on it, offsuit below. Tap to build a range, then run it against Seat A on the Equity tab.
Each button runs a real computation here on the phone and compares it to a value that is fixed by mathematics. Nothing below is stored in the page as an answer.
Walks all 2,598,960 five-card hands, sorts each into its class, and checks the nine totals.
The fast evaluator reads seven cards at once. The slow one tries all 21 five-card subsets and keeps the best. They must never disagree.
Deals a pocket pair, enumerates all 19,600 flops, and counts the ones that hit.
Builds each set by brute force rather than using the formula.