2.  Rubik’s cube = 『魔術方塊』  Invented by a Hungarian professor named Ernő Rubik in 1974.

3.  Rubik’s cube has total 26 pieces. Center piece ( 中心塊 ) X 6 Corner piece ( 角塊 ) X 8 Edge piece ( 邊塊 ) X 12

4. Center piece ( 中心塊 ) Corner piece ( 角塊 ) Edge piece ( 邊塊 ) Consist of 1 color Consist of 3 colors Consist of 2 colors Each kind of piece has unique pattern of color.

5.  Where is correct position of this piece in the right cube? Yes, you are right.

6.  If you know the concept, you can solve the cube.

7.  Layer By Layer solution(LBL) › 1 st edge pieces (Cross) › 1 st layer edge pieces › 2 nd layer edge pieces › 3 rd layer pieces (too complicated, memorize the formulas) If you want to solve the cube fast, these parts are very important.

8.  A example of speedcubing( 速解 ) A example of speedcubing( 速解 )

9.  WCA(World Cube Association)  fewest moves solving ( 最少步驟 )  Speed solving ( 速解 ) Speed solving ( 速解 )  Blindfolded solving ( 盲解 ) Blindfolded solving ( 盲解 )  Multi Blind ( 多個盲解 ) Multi Blind ( 多個盲解 )  單手解 (one-handed solving)  solving with feet ( 腳解 )

10.  Blindfolded solving ( 盲解 ) Blindfolded solving ( 盲解 )  Haiyan Zhuang, Beijing Open 2009 Haiyan Zhuang, Beijing Open 2009  Multi Blind ( 多個盲解 ) Multi Blind ( 多個盲解 )  Multiple Blinfolded at Jakarta Open 2010 Multiple Blinfolded at Jakarta Open 2010

11.  單手解 (one-handed solving)

12.  solving with feet ( 腳解 )  Rubik's cube with feet Official World Record Rubik's cube with feet Official World Record

13.  fewest moves solving ( 最少步驟 )

14.  Thanks you