Free Puzzle Solution

This site designed by Leithauser Research shareware, which makes programs to lock Internet acess (like Internet Password Lock) or block Web sites (like Web Site Zapper ). Both of these programs can control Web access. There is also a program to prevent tampering with the computer clock. There is also  Date Calculator, which will calculate the number of days between any two dates, optionally only counting certain days of the week, such as Monday through Friday. It can also calculate the date a certain number of days before or after a given date, again optionally only counting certain user selected days of the week.

Jack Smith has brown hair. The murderer has grey hair, so Jack Smith is not the murderer.
The suspect who has black hair was wearing a green shirt. The suspect who was wearing a green shirt owns a silver car. The suspect who owns a silver car is not the one who weighs 150 pounds. Therefore, one suspect was wearing a green shirt, has black hair, owns a silver car, and is not the one who weighs 150 pounds. But Larry Davis was wearing a yellow shirt, Bill Martin weighs 150 pounds, John Brown owns a purple car, and Jack Smith has brown hair. Therefore, the only suspect who could be this suspect is Marty Fox. Since Marty Fox has black hair, he is not the murderer.
The suspect who owns a black car was wearing a blue shirt. The suspect who has red hair was wearing a blue shirt. Therefore, one suspect owns a black car, was wearing a blue shirt, and has red hair. Larry Davis was wearing a yellow shirt, John Brown owns a purple car, Jack Smith has brown hair, and Marty Fox has black hair. Therefore, that one suspect is Bill Martin. Since Bill Martin has red hair, he is not the murderer.
The suspect who owns a blue car has brown hair. Jack Smith has brown hair. Therefore, Jack Smith owns a blue car. John Brown owns a purple car, Marty Fox owns a silver car, and Bill Martin owns a black car. Therefore, Larry Davis is the one who owns a green car. This means that Larry Davis is not the suspect who has grey hair. Since Jack Smith has brown hair, Marty Fox has black hair, and Bill Martin has red hair, John Brown must be the one who has grey hair. Since the murderer has grey hair, John Brown is the murderer.

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