2.8
	libcW, libcB
	Suicide() libboard 
Ϸ	ȭ.. struct
	safelevel..

0.3
	 Ÿ ̽ ؼ ׷ Ȯ   
	   ׷  
	ѵ ȭϱ ϱ⿡   
	Ȯ忡 ٰ  ࿡ ٰ ٰ

0.4	п  ؿ ְ
	κ 


0.5	پ ٵ ũ  (5x5?, 7x7?, 9x9, 11x11?, 13x13, 15x15?, 17x17?)
	谡  ϰ , ߰ 谡 

?	 н 

