By A Mystery Man Writer
Some problems with an apparently logical solution can suddenly reveal a different angle that poses new challenges
Riddle of the Week #27: The Blue-Eyed Islanders
It's often the puzzles that baffle that go viral
When Armchair Travel Is Your Only Option - The New York Times
Macro Image Wide Open Blue Eye Stock Photo 321726077, Blue Eye Black
Riddle of the Week #27: The Blue-Eyed Islanders
The Hardest Logic Puzzle Ever - something about it is bothering
What is the solution to the blue-eyed islanders puzzle aka the
Epistemic logic and the problem of common knowledge
The Project Gutenberg eBook of The Riddle Of The Sands, by Erskine
Braingle » 'Brown Eyes, Blue Eyes' Brain Teaser