ConradCHESS .. class .. logic .. IM Conrad Goodman
If 50% of the class is male, and 25% of these males are boys,
what % of the class is boys ... 12.5%, 25%, 50% or impossible to know?
to these solvers as of
Niven Brown, Joe Cruz, Lorna Davis, Brian Foote, Albert Frank, Joshua Green,
Tobias Lagemann, Lance Co, LW Luk, Glenn McCorkle, Valmai Osborn,
Matthew Robinson, Nash Singh, Bernard Sojka, Steve Steppe, Charles Tay,
Hennie van Jaarsveld, Luc Vingerhoets, Brian Wood and Joe Yalkezian.
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