In the second game of the Hansaeng Gisinjeon, Shin Jin-seo played a series of brilliant insertion tesuji (끼움묘수) to defeat the AI KataGo by 4 points. This marks the first human victory over a top Go AI in 10 years since Lee Sedol's famous win against AlphaGo. The game featured three key tesuji moves that turned the tide.
A short editorial from the VEONIB team on why this content matters.
This game showcases that human intuition and creativity can still overcome AI in complex strategic domains like Go, especially through unexpected tesuji combinations.
What sets this video apart is the detailed move-by-move analysis of three brilliant tesuji that forced KataGo into a losing position, highlighting the depth of Shin's preparation and the nuanced weaknesses of pure calculation-based AI.
Go enthusiasts and AI researchers should watch this analysis to understand how human creativity can exploit blind spots in AI play, and consider applying similar heuristic insights in other domains.
A Go tactic where a stone is inserted into an opponent's formation to create weaknesses or capture stones.
A leading Go AI engine known for its strong play and neural network architecture.
South Korean professional Go player, ranked 9-dan, known for his creative and precise play.
The competition between human players and artificial intelligence in the board game Go.
Former world champion Go player who famously beat AlphaGo in 2016, the last human to defeat a top AI before Shin.
A major South Korean Go tournament; this refers to the 2025 Hansaeng Gisinjeon final.
A skilled or brilliant move in Go that achieves a specific local objective efficiently.
The Korean name for the game of Go, emphasizing its cultural origin.
How did Shin Jin-seo win against AI KataGo?
Shin used three brilliant insertion tesuji (끼움묘수) to create decisive advantages, ultimately winning by 4 points after a precise endgame.
What is a 끼움묘수 (insertion tesuji)?
It is a Go tactic where a stone is inserted into an opponent's formation to cut or reduce territory, often leading to captures or aji.
When was the last human win over a top Go AI before this?
Lee Sedol's victory against AlphaGo in March 2016, nearly 10 years earlier.
What is the significance of this game?
It proves that human creativity and strategic intuition can still defeat AI in Go, especially through unexpected tesuji that exploit AI's blind spots.
How did KataGo respond during the game?
KataGo used time extension tactics (playing suboptimal moves to buy time) and eventually resigned, as it could not find a winning line.
How many tesuji were used by Shin Jin-seo?
Three key tesuji were played: an insertion, a cutting move, and a wedging tesuji in the endgame.
What is the Hansaeng Gisinjeon?
It is a major Korean Go tournament; this match was the second game of the final, with Shin and KataGo facing off.
What was the final score of the game?
Shin Jin-seo won by 4 points (4.5 points after komi) in a close but decisive endgame.
Did Shin Jin-seo use any special strategy against KataGo?
Yes, he deliberately created complex tesuji situations that forced KataGo into unfamiliar territory, avoiding simple AI-preferred sequences.
Why is this compared to Lee Sedol's win against AlphaGo?
Both are landmark human victories over top AI, separated by 10 years, and both involved unconventional moves that surprised the AI.