GS Caltex Cup

The GS Caltex Cup is a major Korean professional Go tournament founded in 1996, originally as the LG Refined Oil Cup before transitioning to GS Caltex sponsorship. Organized jointly by the Maeil Business Newspaper and the Korea Baduk Association, it is open to all Korean professionals who compete through a 16-player knockout preliminary, with finalists meeting in a best-of-five title match. The winner receives 70 million won and the runner-up 30 million won. The GS Caltex Cup is notable for maintaining steady corporate sponsorship across nearly three decades.

Country Korea Type Invitational Format Knockout Cycle 1y Komi 6.5 Editions 22

2026 · Edition #31

Champion: Shin Minjun · Runner-up: Kim Cheong-hyeon Jr.

Final, Game 2/5 1 game

Jun 21 Park Junghwan W+R Shin Minjun

Final 4 games

May 13 Park Junghwan B+R Shin Minjun May 29 Shin Minjun B+R Kim Cheong-hyeon Jr. Jun 20 Shin Minjun B+0.5 Park Junghwan Jul 4 Shin Minjun B+R Park Junghwan

Semifinal 2 games

Apr 24 Shin Minjun B+R Kim Cheong-hyeon Jr. May 1 Park Junghwan B+R Kim Seungjin

Quarterfinal 4 games

Mar 25 Hwang Chae-yeon W+R Shin Jinseo Mar 26 Byun Sangil W+R Shin Minjun Apr 2 Pak Min-kyu W+R Kim Seungjin Apr 3 Park Junghwan B+R Kang Dongyun

Round of 16 3 games

Mar 18 Hwang Chae-yeon W+R Shin Minjun Mar 19 Byun Sangil B+R Pak Ha-min Mar 20 Kim Seungjin B+R An Sungjoon

Semifinals 2 games

Mar 27 Weon Seongjin W+0.5 Kim Cheong-hyeon Jr. Apr 22 Hong Sungji B+0.5 Weon Seongjin

Round 1 5 games

Mar 4 Park Junghwan B+R Hong Sungji Mar 5 Kang Yu-t'aek W+R Weon Seongjin Mar 6 Kim Myeonghoon W+R Pak Min-kyu Mar 11 Choi Jeong W+0.5 Kim Cheong-hyeon Jr. Mar 12 Shin Jinseo W+R Kang Dongyun

Preliminaries 7 games

Jan 5 Yu Ch'ang-hyeok B+R Yi Weon-yeong Jan 5 O Yu-chin B+0.5 Yi Chae-seong Jan 6 Park Junghwan B+R P'yo Hyeon-u Jan 6 Kim Hyeon-ch'an W+R Choi Jeong Jan 7 Yu Ch'ang-hyeok B+R Mok Chin-seok Jan 8 Shin Minjun B+R Kim Eun-chi Jan 9 Lee Changho W+3.5 Choi Jeong

2026-05-27 1 game

May 27 Kim Cheong-hyeon Jr. B+R Kang Dongyun

2026-05-15 1 game

May 15 Kang Dongyun B+R Kim Seungjin

2026-05-14 1 game

May 14 Hong Seong-chi W+R Kim Cheong-hyeon Jr.

2026-05-07 1 game

May 7 Shin Jinseo W+R Hong Seong-chi

2026-05-06 1 game

May 6 Kang Dongyun B+R Byun Sangil

2026-04-23 1 game

Apr 23 Byun Sangil B+2.5 Kim Myeong-hun

2026-04-22 1 game

Apr 22 Pak Min-kyu W+R Shin Jinseo

2026-04-17 1 game

Apr 17 Kang Dongyun B+R An Sungjoon

2026-04-01 3 games

Apr 1 Kang Yu-t'aek W+R Kim Myeong-hun Apr 1 Hong Seong-chi B+R Pak Ha-min Apr 1 Choi Jeong W+R An Sungjoon