RNGdle Sandbox

What is the RNGdle sandbox?

Edit a number, generate a random sample, or compare two values side by side. The sandbox shows digit properties and an independent pattern score for each input.

You can link directly to an input by adding a query value, such as ?n=142857. When someone opens the link, their browser reads the digits and fills the sandbox field. It does not send that value to a site database. Comparison creates an address such as ?a=142857&b=123456 after the user submits both values.

Practice as often as you like. Sandbox numbers do not use your daily roll, earn official EP, or change your badge collection.

How the RNGdle sandbox works

Type a whole number between 0 and 1,000,000, or use the Random button for an in-browser sample. The generator uses the browser’s cryptographic random source when available and maps its result into the inclusive range. A browser without that API uses its built-in pseudorandom fallback. Neither path contacts an RNGdle server.

The RNGdle Lab analyzer measures digit sum, unique digits, palindromes, adjacent steps, and odd/even balance. Read the RNGdle formula guide for the five weights and worked examples.

The comparison form applies the same calculation to two values and displays their digit sum, unique-digit count, palindrome status, longest step run, parity split, and total index. Use the contributions to see why the totals differ. It is not an official answer or a game probability.

Inputs remain in browser memory until you leave the page. Submitting a comparison updates the URL so you can copy it. You can remove the query string at any time to clear the shareable values.

RNGdle sandbox inputs and outputs

Both inputs accept values from 0 through 1,000,000. Leading zeros are preserved, so 0012 is analyzed as four digits.

Tips for the RNGdle sandbox

• Open /sandbox?n=142857 to share a single input, then explain that its score is independent.
• Use the comparison panel when you want to see which visible property differs between two numbers.
• Keep leading zeroes if they are part of the digit string you want to analyze; the tool treats the typed digits literally.
• Use RNGdle for a daily roll, badge result, or leaderboard status.
• Remove a shared query string before showing the page on a public screen if you want to clear the displayed values.

When two numbers receive different totals, inspect the contribution list to see why. A total can hide tradeoffs: one value may earn more points for unique digits while another earns more from an adjacent run. The formula does not collapse those features into a statement about which number is “better.”

Frequently asked questions

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