Opener Lab
Compare SERIF
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How SERIF performs
Played first, SERIF removes about 94.8% of the possible-answer list on average and scores 5.07 bits of information. Roughly 36% of the time at least one letter lands in the right spot.
Tried against 1,859 past Wordle answers, SERIF left an average of 124 possible answers standing after the first guess. Its largest group in that replay came on July 18, 2026, when the answer was BOOTH and 321 candidates survived. It has been the daily answer once.
First-guess odds
| Outcome | SERIF |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 36.2% |
| Any green or yellow | 86.4% |
| Whole row gray | 13.6% |
| Worst case answers left | 321 |
*Treating every word in the possible-answer list as equally likely.