Why the Hardest Logic Puzzle Ever Cannot Be Solved in Less than Three Questions
- First Online:
- Cite this article as:
- Wheeler, G. & Barahona, P. J Philos Logic (2012) 41: 493. doi:10.1007/s10992-011-9181-7
- 155 Views
Rabern and Rabern (Analysis 68:105–112 2) and Uzquiano (Analysis 70:39–44 4) have each presented increasingly harder versions of ‘the hardest logic puzzle ever’ (Boolos The Harvard Review of Philosophy 6:62–65 1), and each has provided a two-question solution to his predecessor’s puzzle. But Uzquiano’s puzzle is different from the original and different from Rabern and Rabern’s in at least one important respect: it cannot be solved in less than three questions. In this paper we solve Uzquiano’s puzzle in three questions and show why there is no solution in two. Finally, to cement a tradition, we introduce a puzzle of our own.