Opener Lab
Compare RADII
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How RADII performs
Played first, RADII removes about 91.2% of the possible-answer list on average and scores 4.28 bits of information. Roughly 25% of the time at least one letter lands in the right spot.
Tried against 1,859 past Wordle answers, RADII left an average of 206 possible answers standing after the first guess. Its largest group in that replay came on July 18, 2026, when the answer was BOOTH and 447 candidates survived.
First-guess odds
| Outcome | RADII |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 24.9% |
| Any green or yellow | 81.1% |
| Whole row gray | 18.9% |
| Worst case answers left | 447 |
*Treating every word in the possible-answer list as equally likely.