I do the daily puzzle known as Wordle. For the three people in the country who have never heard of it, it consists of a hidden five letter word and one tries to guess the word in as few tries as possible, with a maximum set at six. After each guess, you get three kinds of feedback: a letter is highlighted green if it is the right letter in the right location; yellow if it is a letter that is used in the word but appears in the wrong location, and grey if the letter is not used at all. The puzzle is similar to the game Master Mind. The answer is from a list of 2309 common words but guesses allow from a pool of about 15,000 words (fewer than the average vocabulary which is estimated to be between 20,000-35,000 words), many of which can be quite obscure.
The puzzle is a little diversion during the day that takes about 10 minutes at the most. But it has attracted an enormous amount of interest and this article looks at the strategies that computers and expert players use to try and get the word in the least number of tries. Computers take an average of 3.41 tries to get the word while expert players average slightly less than four.
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