Nurdle

Wordle is a fun game with an active world-wide result-sharing fanbase.
Nurdle varies in just two respects.
(Also this is clearly just a homage, inspired by the longstanding use of the term nurdle in winks; obviously you shouldn't confuse it with the original.)

Novice

Guess

Instructions

You have five attempts to guess a five-digit number.

The solution and all your guesses have to be pronounced nurdle, boondock or Penhaligon according to the rules of that counting game — that is, their decimal representation must contain 5, 7 or 9, or the number must be a strictly positive multiple of 5, 7 and/or 9.

After each guess:

Correct digits in the correct place are shown in green
Correct digits whose location is still to be identified are shown in yellow
Digits which do not have a location in the solution yet to be identified are shown in (faded) red

The solution can have the same digit in more than one location.

For example, if the target is "12351", the guess "12712" will appear as:

That is:

1^st digit	1	Correct digit in the correct place (green)
2^nd digit	2	Correct digit in the correct place (green)
3^rd digit	7	Digit not in the solution at all (red)
4^th digit	1	Digit in the solution with some positions still to be found (yellow)
5^th digit	2	Digit in the solution but all correct positions have been found (red)

Note: If a multiple of the same digit appears in the wrong location, only the number of that digit which appears unmatched in the solution will appear yellow, and the rest red. For example, with the target "11235" the guess "12211" will appear as:

That is:

1^st digit	1	Correct digit in the correct place (green)
2^nd digit	2	No digit '2' in a position yet to be matched (red)
3^rd digit	2	Correct digit in the correct place (green)
4^th digit	1	A digit '1' still needs to find the correct position (yellow)
5^th digit	1	Only one digit '1' still needs to find a position, no second unmatched '1' in the solution (red)

Type or use the number bar to enter digits; use the "X" on the number bar or backspace to delete the most recent digit. You cannot enter a digit which you have determined does not appear anywhere in the solution; these numbers are shown red in the number bar. Numbers for which you have found at least one correct position are shown green in the number bar. Numbers whose location are entirely yet to be found are shown in yellow on the number bar.

"Narg" mode doesn't allow you to enter digits which have been excluded from a position:

If a digit appears at this location and was correct, the same digit must be entered.
If a digit appears at this location and was incorrect (either being in another location or not present at all), that digit cannot be entered.

Narg mode therefore reduces the available options for guesses. Click "novice" or "narg" to toggle narg mode on or off.

When you have five digits entered, if the five-digit number in the guess meets the requirements (contains 5, 7 or 9, or is divisible by one of those), the number bar will change to a Guess button (the delete "X" is still available); use this or press enter to submit a guess.

If you correctly guess the five-digit number in five tries or fewer, you'll be rewarded with a "SQUOP"; if you fail, you'll be greeted with a "QWXCL" (and the solution).

The target is random, not fixed per day like Wordle — reload for a different target number.

Historical aside: Wordle (and Nurdle) are variations on the traditional “Bulls and Cows” game; this was first implemented on a computer on the Cambridge University “Titan” mainframe in 1968 as the program “moo”, written by Frank King, who went on to lecture the web site maintainer in his undergraduate degree (and accuse him of cheating in his first programming assignment — he hadn't). Small world...

If you would like to try a different variation completely unrelated to winks but possibly a better game, see also Nerdle (which predates Nurdle by some time).