RNGdle near miss finder: see the numbers around yours.

Three ways to look next door

Neighbour mode steps by one, so 123 returns 122 and 124. Tens mode moves by ten, returning 113 and 133 for the same input. Digit replacement changes one position at a time: for 123 that produces 26 valid candidates, from 103 up to 923, excluding the unchanged value and any replacement that would leave the supported range.

How each candidate is presented

Every result is a full analysis card with the same fields as the calculator, followed by a one-line difference summary: gained patterns, lost patterns, and the patterns both numbers share. Reading two cards side by side answers questions like whether a neighbouring value is still a palindrome, without you having to run the calculator twice.

Boundaries are skipped, never wrapped

Values outside 0 to 1,000,000 are omitted rather than rolled over to the other end of the range. At 0, neighbour mode returns only 1; at 999999 it returns 999998 and 1000000; at 1000000 it returns 999999, and digit replacement produces no candidates at all, because every single-digit change would either keep the value or exceed the maximum.

Why candidate counts differ so much

A seven-digit-style value such as 1000000 offers no digit replacement, while 999999 offers 53 and 123 offers 26. The count depends on how many positions can change without breaking the leading-digit rule or leaving the range, which is why the page reports the actual candidates rather than promising a fixed list length.

Not a game-scoring comparison

Being one away from a pattern says nothing about how RNGdle would score either number. This page compares mathematical properties side by side and leaves official scoring out of it, and the case list is generated by arithmetic rather than by any claim about what the game rewards.

When this view is useful

It is the quickest way to see how narrow a pattern is: from a palindrome such as 12321, the neighbouring values 12320 and 12322 are no longer palindromes, which shows how little room the property leaves. It is equally useful for checking whether a value you almost rolled would have matched anything at all.

What one step usually changes

Most single changes remove a pattern rather than add one, simply because the rare definitions are narrow. Moving off a palindrome almost always ends the palindrome; changing one digit of a consecutive run usually breaks the run. The exceptions are worth seeing for yourself: 12 gains consecutive digits when the second digit moves from 2, and a prime can become composite or stay prime depending on which digit you alter.

Reading a long candidate list

Digit replacement can return dozens of cards, so read the difference line rather than every field. Values that gained nothing are the common case; the interesting entries are the ones whose difference line lists a gained pattern, and those are worth opening individually because they show the smallest edit that reaches a new pattern.

How many candidates can I expect?

The count depends on the number and the range limit. Replacing one digit at a time in 123 produces 26 valid candidates, 999999 produces 53, and 1,000,000 produces none because every change would keep the value or exceed the maximum.

Does a near miss mean anything for my roll?

No. It is a mathematical comparison. The game does not publish rules that would make proximity meaningful, so nothing here should be read as a scoring hint.

Can I compare numbers I have not entered?

Yes. Any supported whole number works, whether or not it came from a roll, so this page doubles as a way to inspect a value a friend sent you.

What does the difference line tell me?

It lists the tracked patterns the candidate gained, the ones it lost, and the ones both numbers share. Because the candidates are one step away, each difference can be traced back to that single change.

Why is 1000000's replacement list empty?

It sits at the top of the supported range. Changing any single digit either leaves the value unchanged or pushes it above 1,000,000, so there is no valid candidate to show rather than a list that would break the range rule.

Does the tool wrap 0 around to 1000000?

No. Values outside the range are skipped. Wrapping would create a comparison between two numbers that have nothing to do with each other, which would misrepresent what a neighbour is.

Which mode should I start with?

Neighbour mode for the tightest comparison, tens mode when you want to see whether a pattern survives a small shift, and digit replacement when you are looking for the closest value that matches a particular pattern.

Are the analyses of the candidates stored?

Only the input number joins the recent list for later reuse. The generated candidates are computed for the comparison and are not saved, and nothing about them leaves your browser.

Can I see the values between the tens steps?

Yes, by switching modes. Neighbour mode covers the values one step away, and digit replacement covers the single-digit variations in between, so between the three modes you can inspect everything within a small radius of the original.

Why do two modes sometimes return the same number of results?

For small values the bands overlap. At 123 both neighbour and tens mode return two candidates, while digit replacement returns 26, because changing one position reaches many more values than stepping by a fixed amount.

Are patterns recalculated for every candidate?

Yes. Each candidate goes through the same analysis as any other input, which is why every card carries its own pattern list, digit sum and factor line rather than inheriting anything from the original.

Can I use the near miss finder on a shared number?

Yes. Open the shared value first, then run it here: the comparison needs a baseline number, and any supported value works whether or not it came from the game.

Does the list include the original number?

No. The original is excluded from every mode so the difference line always compares two different values; the baseline stays visible above the list as the reference point.