+2011-12-18 Daigo Moriwaki <daigo at debian dot org>
+
+ * [sohgi-server]
+ - shogi_server/board.rb, piece.rb: Refactoring to cache OU pieces,
+ which was inspired by 81SquareShogi-server's change
+ (74b24b88c843f1dd767412475b117481d1d5e8eb).
+
2011-12-12 Daigo Moriwaki <daigo at debian dot org>
* [shogi-server]