Opener Lab
Compare FIBRE
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How FIBRE performs
Played first, FIBRE removes about 93.0% of the possible-answer list on average and scores 4.75 bits of information. Roughly 37% of the time at least one letter lands in the right spot.
Tried against 1,859 past Wordle answers, FIBRE left an average of 163 possible answers standing after the first guess. Its largest group in that replay came on July 15, 2026, when the answer was PSHAW and 432 candidates survived.
First-guess odds
| Outcome | FIBRE |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 36.7% |
| Any green or yellow | 81.7% |
| Whole row gray | 18.3% |
| Worst case answers left | 432 |
*Treating every word in the possible-answer list as equally likely.