Opener Lab
Compare ZETAS
Pick a word to compare against.
How ZETAS performs
Played first, ZETAS removes about 93.5% of the possible-answer list on average and scores 4.60 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, ZETAS left an average of 153 possible answers standing after the first guess. Its largest group in that replay came on July 19, 2026, when the answer was CHURN and 348 candidates survived.
First-guess odds
| Outcome | ZETAS |
|---|---|
| First-turn solve* | 0% |
| At least one green | 21.5% |
| Any green or yellow | 85.2% |
| Whole row gray | 14.8% |
| Worst case answers left | 348 |
*Treating every word in the possible-answer list as equally likely.