Opener Lab
Compare BIRCH
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How BIRCH performs
Played first, BIRCH removes about 90.2% of the possible-answer list on average and scores 4.46 bits of information. Its first-turn information ranks #7,594 out of 14,855 Wordle guesses tested. Roughly 29% of the time at least one letter lands in the right spot.
Tried against 1,858 past Wordle answers, BIRCH left an average of 231 possible answers standing after the first guess. Its largest group in that replay came on July 17, 2026, when the answer was LEGAL and 582 candidates survived. It has been the daily answer once.
First-guess odds
| Outcome | BIRCH |
|---|---|
| First-turn solve* | 0.04% |
| At least one green | 29.3% |
| Any green or yellow | 75.3% |
| Whole row gray | 24.7% |
| Worst case answers left | 582 |
*Treating every word in the possible-answer list as equally likely.