Difficulty Level 6 ««««««
The object is to separate the two parts - N E W S. Nob Yoshigahara (1936 - 2004) came up with the idea for this puzzle when he was 19 years old while strolling home in the snow one day.
Unfortunately saying anything here about it's construction would give away how to solve it. We certainly can't dapppoint the fans that have come to expect frustratingly difficult puzzles from Nob. Besides, Nob always loved the fans who refused to take any hint the most!
The level of difficulty is very high because it's very difficult to work out the solution to the puzzle. Once done the puzzle is not difficult to memorise.
The key word in "needle".