Opener Lab
Compare FIEST
Pick a word to compare against.
How FIEST performs
Played first, FIEST removes about 93.4% of the possible-answer list on average and scores 5.01 bits of information. Its first-turn information ranks #2,437 out of 14,855 Wordle guesses tested. It is not on the possible-answer list, but it can still be useful because of the feedback groups it creates.
Tried against 1,858 past Wordle answers, FIEST left an average of 157 possible answers standing after the first guess. Its largest group in that replay came on July 19, 2026, when the answer was CHURN and 382 candidates survived.
First-guess odds
| Outcome | FIEST |
|---|---|
| First-turn solve* | 0% |
| At least one green | 33.0% |
| Any green or yellow | 83.8% |
| Whole row gray | 16.2% |
| Worst case answers left | 382 |
*Treating every word in the possible-answer list as equally likely.