Wordle solver #94
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Wordle solver #94
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Merged as bb77fe7. Tag https://github.com/julianhyde/morel/tree/0095-mutually-recursive.0 has the raw commits for this and #95. |
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Wordle is a daily puzzle where you try guess a word drawn from a corpus of 12,972 five-letter words. Each time you guess, you are told which letters were correct, and you can use that information in a subsequent guess.
The result of a guess is called a "mask". When we guess "tiger" for "gazer", we get the mask "bbygg" (black-black-yellow-green-green), which means that "g" is in the wrong place, and "e" and "r" are in the right place.
What is the optimal word to guess at each stage? It is the word that delivers the most information.
Suppose there are 5 words left we are considering two guesses; "zebra" might yield mask1 with 3 words and mask2 with 2 words; and "tiger" might yield mask3 with 4 words and mask4 with 1 word. "Zebra" is a better choice, because the largest group (mask1 with 3 words) is smaller than "tiger"'s largest group (mask 3 with 4 words).