Hwang In-seong is an EGF 8-dan amateur go player, former yeongusaeng from 1996-2001, and former game commentator on Baduk TV. Since 2001, he has placed 1st in 37 amateur go tournaments in Korean and Europe.[CitationNeeded]
He stayed in Germany in 2005/2006, and returned in 2009, after finishing his military service. In spring 2011, Hwang In-seong became an official teacher of the Swiss Go Association and teaches at the Zurich, Lausanne, Geneva Go Club. In 2014, he moved to Grenoble, France, becoming an official teacher of the French Go Federation, alongside Fan Hui.
In 2011, Hwang In-seong founded an online school, Yunguseng Dojang. In 2014, he added an american section. At a point in time, the European Yunguseng Dojang had 72 active players and a 15+ person waiting list, and the American Yunguseng Dojang had around 40 active players. Oh Chi-min, Kim Seong-jin, and Kim Young-Sam joined the school as assistant teachers, helping to review every players' played games.
In 2017, Hwang In-seong created the Ellie Cup, which was named after his daughter. He created the event in order to give favor back to the European go community.
- 1996-2001 Yeongusaeng (Korean insei).
- 2002-??? Entered Myoung-ji university at the Baduk department.
- 2003-??? Began as TV commentator on the Korean Baduk TV.
- 2005-06 Stayed in Berlin, Germany as a go teacher and attended 14 tournaments (10 1st places, 3 2nd places).[CitationNeeded]
- 2009-14 Stayed in Berlin and Frankfurt, Germany and Zürich, Switzerland as a go teacher and attended 26 tournaments (15 1st places, 7 2nd places).[CitationNeeded]
- 2014-present Staying in Grenoble, France.
- 2001 Cyber AMA Kuksu, 2nd place
- 2002 Asian Baduk Championship (team tournament), 1st place
- 2002 Michuhol Cup, 3rd place
- 2002 Asian University Championship, 2nd place
- 2003 Korean Amateur Baduk Association President Cup, 2nd place
- 2003 Korean University Cup, 2nd place
- 2003 Ji-song Cup (Baduk TV tournament), 2nd place
- 2003 Korean Sport Olympiad, bronze medal
- 2004 Korean Defence Newspaper Cup, top 4
- 2004 Samsung Cup, amateur section top 4, after that played in the preliminary section with professionals, won the first round and lost in the 2nd round
- 2005 Korean Yahoo Cup, 2nd place
- 2005 Berlin Kranich, 1st place.
- 2006 Hamburg Affensprung, 1st place.
- 2006 Pandanet Tour Barcelona, Hungary, Dublin, 1st place.
- 2009 Pandanet Tour Dublin, Brno, Pardubice, 1st place.
- 2009 European Go Championship (EGC), 2nd place.
- 2009-10 Berlin "Go to Innovation," 1st place (4 times in a row).
- 2010 Shusaku Cup (Hamburg Affensprung, Mausefalle, Berlin Kranich), 1st place.
- 2011 Berlin "Go to innovation," 1st place (6 times in a row)
- 2012 Barcelona Go Seigen-Shusaku Cup, 1st place
- 2013 Berlin "Go to Innovation," 1st place
- 2014-19 Master Lim Cup - French Clubs Championship (Grenoble team wins 5 times)
- 2019 EPFL Open, 1st place
Total: 54 tournaments, 37 1st places, 13 2nd places.[CitationNeeded]
 After the first tie-breaker, Hwang In-seong was even with the tournament winner.