Opener Lab
Compare ERUGO
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How ERUGO performs
Played first, ERUGO removes about 93.4% of the possible-answer list on average and scores 4.83 bits of information. Its first-turn information ranks #3,937 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, ERUGO left an average of 154 possible answers standing after the first guess. Its largest group in that replay came on July 14, 2026, when the answer was STEAK and 349 candidates survived.
First-guess odds
| Outcome | ERUGO |
|---|---|
| First-turn solve* | 0% |
| At least one green | 25.0% |
| Any green or yellow | 85.9% |
| Whole row gray | 14.1% |
| Worst case answers left | 349 |
*Treating every word in the possible-answer list as equally likely.