Comparing the Incomparable
Some ideas about comparing things, with a novel framework I'm calling "Mesh Completion Convolution" (MCC)
Hardest Logic Puzzle: Part 2
SPOILER ALERT: solution in here! Managed to crack this bad boy, so if you're still working on it give this one a miss for now.
Hardest Logic Puzzle: Part 1
This puzzle is indeed very very hard. She is a beast, 20 hands high if she's a foot. Haven't solved it yet, but here are my first thoughts.
Journey through New York Journeys
If you can explore planar weighted graphs with a limited set of distances here, you can do it anywhere.