Opener Lab
Compare SHELF
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How SHELF performs
Played first, SHELF removes about 92.0% of the possible-answer list on average and scores 4.61 bits of information. Its first-turn information ranks #6,094 out of 14,855 Wordle guesses tested. Roughly 30% of the time at least one letter lands in the right spot.
Tried against 1,858 past Wordle answers, SHELF left an average of 188 possible answers standing after the first guess. Its largest group in that replay came on July 11, 2026, when the answer was AVIAN and 431 candidates survived. It has been the daily answer once.
First-guess odds
| Outcome | SHELF |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 29.6% |
| Any green or yellow | 81.7% |
| Whole row gray | 18.3% |
| Worst case answers left | 431 |
*Treating every word in the possible-answer list as equally likely.