A simple solution to the hardest logic puzzle ever

Analysis 68 (2):105-112 (2008)
We present the simplest solution ever to 'the hardest logic puzzle ever'. We then modify the puzzle to make it even harder and give a simple solution to the modified puzzle. The final sections investigate exploding god-heads and a two-question solution to the original puzzle.
Keywords logic puzzle  hardest logic puzzle ever  knights and knaves  liar paradox  boolos  hard puzzle  Raymond Smullyan
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DOI 10.1111/j.1467-8284.2007.00723.x
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George Boolos (1996). The Hardest Logic Puzzle Ever. The Harvard Review of Philosophy 6 (1):62-65.

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