The above illustration depicts an invalid Roman numerals equation (the left side is 6 and the right side is 2) using seven matches. Find a way to correct this equation by only moving one match. You cannot shift the position of the other matches.
Solution (Click to Show)
As is equal to 1, the equation is now valid.
If you have read my previous post about Henry Ernest Dudeney’s ingenious match puzzle, you won’t have much problem answering this. After all, the methodologies for solving these two puzzles are almost the same.
Dudeney’s puzzle was my inspiration when I came up with the puzzle for this post. I believe that my puzzle is easier than Dudeney’s, though a friend did not agree. He said that my puzzle would only be easy for someone who’s already familiar with Dudeney’s version.