Opener Lab
Compare PEISY
Pick a word to compare against.
How PEISY performs
Played first, PEISY removes about 93.5% of the possible-answer list on average and scores 4.91 bits of information. It is not on the possible-answer list, but it can still be useful because of the feedback groups it creates.
Tried against 1,859 past Wordle answers, PEISY left an average of 162 possible answers standing after the first guess. Its largest group in that replay came on July 16, 2026, when the answer was BUTTE and 358 candidates survived.
First-guess odds
| Outcome | PEISY |
|---|---|
| First-turn solve* | 0% |
| At least one green | 42.1% |
| Any green or yellow | 85.0% |
| Whole row gray | 15.0% |
| Worst case answers left | 358 |
*Treating every word in the possible-answer list as equally likely.