Weekend challenge & fun

Print edition of Economist have become my regular
read.

Technology quarterlies and insightful articles on Far East economies (esp.
China) are must read.

Here is a different perspective from the magazine:

SLIDING-BLOCK puzzles look easy, but they can be tricky to solve.

http://www.economist.com/science/displayStory.cfm?story_id=3445734

i know i know i must be working now.. but..