ConradCHESS .. manhole covers .. logic .. IM Conrad Goodman
Why are round manhole covers safer than square manhole covers?
to these solvers as of
Danny Blanco, Niven Brown, Craig Evans, Egon Feller, Albert Frank,
David Gill, Joshua Green, Roy Harper, Lance Co, Chris Magson, Glenn McCorkle,
Will McGugan, Adron McIntosh, Richard Newall, Valmai Osborn, Greg Shell,
Steve Steppe, Heather Swan, Hennie van Jaarsveld, Luc Vingerhoets,
Brend Wesseling and Frank Womack.
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