Enigma 350: Oh, careless pen!
24 June 2016
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From New Scientist #1499, 13th March 1986 [link]
Four football teams (A, B, C and D) are to play each other once. After some of the matches had been played a table was drawn up giving some details of the matches played, won, lost and so on.
Unfortunately, not only had the digits been replaced by letters, but also (Uncle Bungle and his careless pen again!) one of the letters was wrong on one of the occasions on which it appeared — if it appeared more than once.
The table looked like this:
(Two points are given for a win, and one point to each side in a drawn match).
Which letter was wrong? What should it be? Find the score in each match.