Opener Lab

Compare COLLS

Pick a word to compare against.

COLLS C
89.4%
of words eliminated

How COLLS performs

Played first, COLLS removes about 89.4% of the possible-answer list on average and scores 4.25 bits of information. Its first-turn information ranks #9,599 out of 14,855 Wordle guesses tested. It is not on the possible-answer list, but it can still be useful because of the feedback groups it creates.

Tried against 1,858 past Wordle answers, COLLS left an average of 251 possible answers standing after the first guess. Its largest group in that replay came on July 20, 2026, when the answer was DIVER and 608 candidates survived.

First-guess odds

OutcomeCOLLS
First-turn solve*0%
At least one green29.5%
Any green or yellow74.2%
Whole row gray25.8%
Worst case answers left608

*Treating every word in the possible-answer list as equally likely.