Go strategy Go players and tournaments Computer Go Go Rules and History

GS Caltex Cup

The GS Caltex Cup (Korean: GS칼텍스배) is a Go competition.


The GS Caltex Cup replaced the LG Refined Oil Cup. It is sponsored by the GS Caltex Corporation and Daily Economic News. It currently has the biggest prize in South Korea. The main tournament is a 16 player knockout. The final is a best-of-5. Komi is 6.5 points and the time limit is 10 min main time with 3 x 40s byo-yomi. The winner's purse is 50,000,000 Won (~US$50,000).

Past winners and runners-up

Year Winner Score Runner-up
1996 Yoo Changhyuk 3-2 Cho Hunhyun
1997 Lee Chang-ho 3-0 Choi Myung-Hoon
1998 Lee Chang-ho 3-0 Choi Myung-Hoon
1999 Seo Bongsoo 3-2 Yoo Changhyuk
2000 Choi Myung-Hoon 3-1 Rui Naiwei
2001 Lee Chang-ho 3-0 Choi Myung-Hoon
2002 Lee Sedol 3-1 Choi Myung-Hoon
2003 Lee Chang-ho 3-0 Cho Hanseung
2004 Lee Chang-ho 3-0 Pak Yeong-hun
2005 Lee Chang-ho 2-1 Choi Cheol-han
2006 Lee Sedol 3-0 Choi Cheol-han
2007 Lee Sedol 2-0 Pak Yeong-hun
2008 Pak Yeong-hun 3-0 Won Seung-jin
2009 Cho Hanseung 3-1 Pak Yeong-hun
2010 Won Seungjin 3-1 Cho Hanseung
2011 Park Junghwan 3-0 Pak Yeong-hun