Opener Lab
Compare SIGMA
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How SIGMA performs
Played first, SIGMA removes about 91.5% of the possible-answer list on average and scores 4.51 bits of information. Roughly 30% of the time at least one letter lands in the right spot.
Tried against 1,859 past Wordle answers, SIGMA left an average of 206 possible answers standing after the first guess. Its largest group in that replay came on July 19, 2026, when the answer was CHURN and 460 candidates survived.
First-guess odds
| Outcome | SIGMA |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 30.1% |
| Any green or yellow | 80.5% |
| Whole row gray | 19.5% |
| Worst case answers left | 460 |
*Treating every word in the possible-answer list as equally likely.