Dice roller

Rolls the notation, dropped dice and all, from a seed anybody can check.

It runs entirely in this browser tab: nothing you type is uploaded, and every draw comes from a seed the result prints.

Settings

Seed: A word gives everybody who opens the link the same draw; empty draws a fresh one and shows it.
Roll it: Advantage rolls the first term twice and keeps the better; the notation itself is unchanged. Choices: As written, With advantage, With disadvantage.
Times each: Each line rolled this many times, which is how a table rolls a party's initiative at once. A number from 1 to 100.
Show the odds: The average of a single roll, counted from every outcome rather than from this one.

Why does everything have a seed?: So that a roll can be checked. A draw here is a function of its seed: the same word gives the same result to you, to the person you send the link to, and to the desktop build. Leave it empty and a fresh seed is drawn and shown, so you can pin a roll after the fact.
Can I use this to deal cards for money?: No. The generator is reproducible on purpose and invertible from a single output, which is what makes it useful here and useless for that. It is not a cryptographic source of chance and the result says so.
Why is there no word list in the word finder?: Because a usable one is larger than this whole application, and a small one is worse than none: it says “not a word” about words. The list comes from you, and the result says how many words it searched so a search that found nothing is visibly a short list.
Does the chess reader have an engine?: No: no evaluation, no best move, no opening book. What it does is replay a game on a real board, which is a fact about the rules rather than an opinion about the moves — and it stops at a move that will not play rather than reading past it.

Dice odds
Counts every outcome of a roll rather than simulating it, and draws the histogram.

Dice score sheet
Scores a five-dice sheet, checks each entry belongs where it was put, and adds the bonuses.