Opener Lab
Compare FETUS
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How FETUS performs
Played first, FETUS removes about 92.2% of the possible-answer list on average and scores 4.58 bits of information. Roughly 23% of the time at least one letter lands in the right spot.
Tried against 1,859 past Wordle answers, FETUS left an average of 184 possible answers standing after the first guess. Its largest group in that replay came on July 12, 2026, when the answer was CLACK and 442 candidates survived.
First-guess odds
| Outcome | FETUS |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 23.0% |
| Any green or yellow | 81.3% |
| Whole row gray | 18.7% |
| Worst case answers left | 442 |
*Treating every word in the possible-answer list as equally likely.