Opener Lab
Compare RULER
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How RULER performs
Played first, RULER removes about 92.9% of the possible-answer list on average and scores 4.62 bits of information. Roughly 30% of the time at least one letter lands in the right spot.
Tried against 1,859 past Wordle answers, RULER left an average of 167 possible answers standing after the first guess. Its largest group in that replay came on July 18, 2026, when the answer was BOOTH and 395 candidates survived.
First-guess odds
| Outcome | RULER |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 30.0% |
| Any green or yellow | 83.3% |
| Whole row gray | 16.7% |
| Worst case answers left | 395 |
*Treating every word in the possible-answer list as equally likely.