Opener Lab
Compare REBUT
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How REBUT performs
Played first, REBUT removes about 93.8% of the possible-answer list on average and scores 4.95 bits of information. Roughly 26% of the time at least one letter lands in the right spot.
Tried against 1,859 past Wordle answers, REBUT left an average of 143 possible answers standing after the first guess. Its largest group in that replay came on July 21, 2026, when the answer was SHILL and 377 candidates survived. It has been the daily answer once.
First-guess odds
| Outcome | REBUT |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 26.5% |
| Any green or yellow | 84.0% |
| Whole row gray | 16.0% |
| Worst case answers left | 377 |
*Treating every word in the possible-answer list as equally likely.