A correct letter in the right place is highlighted in green in the box where you enter the guessed words, and a correct letter in the wrong place is highlighted in yellow. And letters that do not appear in the searched word are given a gray background. Following the same pattern, all letters that have already been used in words are also marked on the virtual keyboard.
Overall, the chances are quite good that you will find the word you are looking for in six rounds – which of course significantly increases long-term motivation. And it seems that John Wardle, the artist and developer who invented the quiz and rightly based Wordle on his last name, struck a chord: the game has become a hit on the web.
By the way: Because German players without knowledge of English vocabulary have so far been left out, the developer Philipp Hübner has put a German version of Wordle on the web within a very short time. It’s worth trying!