Opener Lab
Compare UNDID
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How UNDID performs
Played first, UNDID removes about 82.8% of the possible-answer list on average and scores 3.63 bits of information. Its first-turn information ranks #13,399 out of 14,855 Wordle guesses tested. Roughly 18% of the time at least one letter lands in the right spot.
Tried against 1,858 past Wordle answers, UNDID left an average of 407 possible answers standing after the first guess. Its largest group in that replay came on July 18, 2026, when the answer was BOOTH and 867 candidates survived. It has been the daily answer once.
First-guess odds
| Outcome | UNDID |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 17.6% |
| Any green or yellow | 63.2% |
| Whole row gray | 36.8% |
| Worst case answers left | 867 |
*Treating every word in the possible-answer list as equally likely.