Opener Lab
Compare VIPER
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How VIPER performs
Played first, VIPER removes about 92.2% of the possible-answer list on average and scores 4.62 bits of information. Roughly 26% of the time at least one letter lands in the right spot.
Tried against 1,859 past Wordle answers, VIPER left an average of 186 possible answers standing after the first guess. Its largest group in that replay came on July 18, 2026, when the answer was BOOTH and 450 candidates survived.
First-guess odds
| Outcome | VIPER |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 25.8% |
| Any green or yellow | 80.9% |
| Whole row gray | 19.1% |
| Worst case answers left | 450 |
*Treating every word in the possible-answer list as equally likely.