http://v.youku.com/v_show/id_XODc2MzE2Nzk2.html
原话:So after winter vacation I decided to take some cubes to perform BLD solves occasionally
You can say that 9 min memo is fast, but top memory athlets memorize equivalent amount of information in less than 5 minutes. Execution was safe (as well as memo, I guess), no rush at all.