Lee Sedol: the story on HearLore

A Broken Ladder

On the 23rd of April 2003 Lee played Hong Chang-sik in the KAT cup. The game featured a tactical formation known as a broken ladder. Experts usually consider playing out a broken ladder a mistake for beginners. It leaves chasing stones weak and often leads to defeat. Lee defied this conventional wisdom by using the pattern to capture Hong's large group of stones. These stones sat in the lower-right side of the board. Black's stones in the corner had previously been considered dead. They came back to life after the maneuver. White resigned at move 211. Moves 67 to 97 showed the critical sequence where Lee executed the plan. This victory brought black's stones back from near-certain loss.

The Strong Stone

Starting on the 9th of March 2016 Lee played a five-game match against AlphaGo. The program was developed by Google DeepMind in London. A one million dollar prize accompanied the series. Lee lost the first three games by resignation. On the 13th of March he played white and won the fourth game. An unexpected move at White 78 became known as a brilliant tesuji. Gu Li 9 dan called it a divine move that was completely unforeseen. GoGameGuru stated this game would become famous in history. Lee requested to play black in the final fifth game because winning with black felt more valuable. He lost the last game on the 15th of March to finish 1, 4. After

When was Lee Sedol born and where did he grow up?

Lee Sedol was born on the 2nd of March 1983. He grew up on Bigeumdo Island in South Korea.

How old was Lee Sedol when he became a professional Go player?

Lee Sedol achieved professional status at age twelve and four months. This made him the fifth-youngest person to turn pro in South Korean history.

What happened during the KAT cup match between Lee Sedol and Hong Chang-sik on the 23rd of April 2003?

Lee Sedol defeated Hong Chang-sik by using a broken ladder formation to capture large groups of stones. The game ended with White resigning at move 211 after Black's previously dead corner stones came back to life.

What were the results of the five-game match between Lee Sedol and AlphaGo starting on the 9th of March 2016?

Lee Sedol lost the first three games but won the fourth game against the program developed by Google DeepMind. He ultimately finished the series with a score of one win to four losses after losing the final game on the 15th of March.

Why did Lee Sedol announce his retirement from professional play on the 19th of November 2019?

Lee Sedol retired because he felt an entity existed which could not be defeated. This referred to the increasing dominance of artificial intelligence in Go that caused his world to collapse.

Lee Sedol.