Won Seong-jin
| Won Seong-jin | |
|---|---|
| Full name | Won Seong-jin |
| Hanja | 元晟溱 |
| Born |
15 July 1985 South Korea |
| Residence | South Korea |
| Turned pro | 1998 |
| Rank | 9 dan |
| Affiliation | Hanguk Kiwon |
Won Seong-jin (born 15 July 1985) is a professional Go player.
Won became a professional in 1998. In 2011, Won entered his first World Championship Final, the 16th Samsung Cup, by defeating Pak Yeong-hun in the quarter-finals, and Chen Yaoye 2-1 in a hard fought semi-final to face the defending champion Gu Li, who respectively defeated former winner Lee Chang-ho, then rising Korean star Na Hyun 2-0.
The final, played from 5–7 December with no rest breaks, was the first World Championship not to include a rest day, a format which resulted in little rest for the players and more fiercely competitive games. Won, with the white stones, attacked Gu Li's long dragon in the middle of the battle and gained a convincing win, albeit from Gu Li's lack of insight on his dragon's safety.
Game 2, however produced more energetic Go from Gu, this time with the white stones, who instantaneously began forming an exterior advantage and steady territory gain in exchange for Won's opening acquired territory. The first battle scene shifted to the bottom-left hand corner, and Won immediately had to break up White's territorial/positional advantage. Whilst Black was able to successfully defend against White's attack, he conceded the initiative to White, who immediately broke into Black's territory in the bottom-right. Though Black was able to withstand white's erasure of his territory, it became clear that Black's 55th move was an error in reply, which allowed development to occur in mid-bottom territory, should White decide to do so. Black's 59th move however, was observed and quoted by many other pros as a blunder, a very sub-par move which did not benefit Black nor affect White in any way. The game progressed further, and it appeared that Black, despite his slip-ups, had White's 2 dragons (mid-bottom/right) in a tightening grip, though there was still no danger present. Only further development into the game showed that White's advantage, after breaking into Black's territory at top, was very substantial, and that Black had to securely kill the right hand group to win, or to force it into a ko fight where Black's focus would equally be on the mid-bottom dragon. Gu displayed exceptional insight to nullify Black's attacking attempts on the right, whilst it was White's excessive ko count which enabled him to win the ko fight in the huge mid/bottom ko dragon fight.
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