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What does par mean?
Par is not a difficulty setting. It is the length of the shortest ladder that exists.
What par counts
A word ladder is a chain of words of the same length where each step changes exactly one letter and every word in between is a real word. Par is the number of steps in the shortest ladder that exists between the start word and the goal word. It is not the length of whichever ladder the setter wrote down first. It is the length of the shortest route between those two words, measured against the words the puzzle accepts.
So par describes the gap between two words rather than the person crossing it. A start and a goal sit a fixed distance apart in a graph of words, and par is that distance. Two solvers on the same day receive the same number, and neither can move it by playing well or badly. The number belongs to the puzzle, not to your attempt.
Computed, not chosen
Par is found by search. The puzzle takes the accepted list, explores routes out from the start word, and records the shortest one. The search is exhaustive rather than a guess, so the answer is a fact about the list. Nobody looks at a ladder and decides that it feels like a four. The four is measured. A chosen number invites argument, and a measured one does not, since doubting a par means claiming that no shorter route exists, and you can look for one.
One target for every solver
Rung a Day uses about 2,300 common four-letter English words, and obscure words, dialect words and proper nouns are rejected before any ladder is measured. Par is computed against that list. Because the puzzle is one a day and the same for everyone, each solver meets the same start, the same goal and the same par. Your history, your speed and whether you have played before make no difference. No account is needed, and the puzzle resets at local midnight.
Hints do not change the number. Up to three are available per puzzle, and each reveals one letter of a shortest route. A hint gives away part of the answer and saves time, but par stays where the search put it. A hinted solve and an unaided solve are judged against the same target, and the hint is the only thing that differs between them.
What beating par means
Golfers can beat par because a course allows it. A word ladder does not. Par is the length of the shortest ladder that exists, so there is nothing shorter to find and no route can come in under it. What players usually call beating par is matching it: reaching the goal without a wasted rung. That is a perfect solve rather than a lucky one. A result above par means a detour, and the size of the detour is exactly how far your route sat from the shortest one.
This is what makes scores comparable. Par plus two means two wasted steps, whether the ladder was short or long, because the baseline is the puzzle's own minimum, not an average or a guess. A long ladder does not flatter a route that wandered, and a short one does not punish a clean route. Par removes the size of the puzzle and leaves the quality of your route.
Questions
Is par the same as a difficulty level?
No. Par is measured from the puzzle itself: the number of steps in the shortest ladder between the two words. A larger par means the two words sit further apart, not that the puzzle was set to a harder grade.
Can you finish under par?
When par is the length of the shortest ladder that exists, no shorter route is available, so matching par is the best possible result. A score above par means extra steps, not a different target.
Why does par make scores comparable?
Every solver faces the same minimum on the same puzzle. Two wasted steps above par means the same thing on a short ladder and a long one, so results from different days can be read side by side.
Play today’s ladder → one puzzle a day, about two minutes.