Can you find the six men's full names and tell which men tell the truth and which tell lies?

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Three Paley brothers and three Thomson brothers operate a company that manufactures lie detectors.
Three of these six men always tell the truth and three always tell the lies; neither set of brothers consists exclusively of liars.
Some recent statements from the six men are recorded below.
Can you find the six men's full names and tell which men tell the truth and which tell lies?
1. Alan: "Both my brothers tell lies."
2. Boris: "Both my brothers tell the truth."
3. Chuck: "Alan and Boris are both liars."
4. Dalman: "Chuck and I are brothers."
5. Edwin: "Boris and I are brothers."
6. Finney: "Edwin tells the truth."
7. Finney: "Boris is one of the Paleys."

posted Feb 9, 2021
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