Somewhere between September 2018 and April 2019, he stopped playing experimental fuseki.
- 1-dan: 2001-07
- 2-dan: 2005-07
- 3-dan: 2007-07
- 4-dan: 2010
- Alexander Dinerchtein discusses a game of Gan Siyang at: http://www.youtube.com/watch?v=zFImtHxZrEw&
- Some games of his at: http://gokifu.com/player/Gan+Siyang
- A small article about Gan: http://www.lifein19x19.com/forum/viewtopic.php?f=13&t=3860