53rd Honinbo title 1998

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# 53rd Honinbo title

## Preliminary finals

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
1997-07-10 | Chino Tadahiko | O Rissei | W+1.5 | 284 | sgf
1997-07-31 | Yamada Kimio | Honda Kunihisa | B+R | 179 | sgf
1997-08-07 | Oya Koichi | O Meien | W+R | 158 | sgf
1997-08-28 | Takemiya Masaki | Kobayashi Satoru | W+2.5 | 188 | sgf

## League

In the first column the white player, on the top row the black player.

# | player | result | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
1. | Kato Masao | 2-5 |  | B+3.5 |  | B+R |  | W+R |  | W+R
2. | Ryu Shikun | 3-4 |  |  | B+R |  | B+2.5 |  | W+R |
3. | Hikosaka Naoto | 4-3 | W+R |  |  | W+3.5 |  | B+R |  | B+R
4. | Cho Sonjin | 1-6 |  | B+R |  |  | B+R |  | B+R |
5. | Kobayashi Satoru | 4-3 | W+R |  | B+R |  |  | B+R |  | B+R
6. | O Rissei | 5-2 |  | W+1.5 |  | W+R |  |  | B+R |
7. | O Meien | 5-2 | W+5.5 |  | W+R |  | B+0.5 |  |  | W+R
8. | Yamada Kimio | 4-3 |  | W+R |  | W+7.5 |  | B+3.5 |  |

## Demotion Playoff

The bottom four players are demoted: Cho Sonjin, Kato Masao, Ryu Shikun and one more. Yamada Kimio and Kobayashi Satoru played a playoff lost by Yamada Kimio.

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
1998-04-06 | Yamada Kimio | Kobayashi Satoru | W+6.5 |  |

## Challenger Playoff

Both O Rissei and O Meien had 5 wins. They played a challenger playoff won by O Rissei.

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
1998-04-06 | O Rissei | O Meien | B+1.5 | 301 | sgf

## 53rd Honinbo Title

date | black | white | result | #mv | sgf
--- | --- | --- | --- | --- | ---
1998-05-21,22 | Cho Chikun | O Rissei | B+R | 167 | sgf
1998-06-01,02 | O Rissei | Cho Chikun | W+R | 148 | sgf
1998-06-11,12 | Cho Chikun | O Rissei | W+R | 162 | sgf
1998-06-22,23 | O Rissei | Cho Chikun | W+R | 166 | sgf
1998-06-29,30 | Cho Chikun | O Rissei | W+R | 172 | sgf
1998-07-13,14 | O Rissei | Cho Chikun | W+R | 154 | sgf

Cho Chikun won with 4-2.