This logic puzzle is designed to be hard. Unless you can store a large number of letters in your head you will need to use a pen and paper to keep track of what you know about each square, and apply a combination of many clues, in order to work out several of the steps.
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Classic: Type in answers that appear in a list
Forced Order: Answers have to be entered in order
Minefield: Wrong answers will end the quiz
Wrong Answers: Some wrong answers will appear in red
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