go mid first
Merge pull request #1 from lonelyjohner/JudeWang

go mid first
+ score system
Merge pull request #1 from CodeMySky/master

+ score system
+ block size
Merge pull request #2 from lonelyjohner/JudeWang

+ size
expand as far as possible
Merge pull request #4 from CodeMySky/master

Merge pull request #2 from lonelyjohner/JudeWang
Merge pull request #3 from lonelyjohner/JudeWang

Jude wang
addDoggieCheck
merge
final tune
Merge pull request #5 from CodeMySky/master

final version