Kobayashi Kenji
Kobayashi Kenji (小林健二) has a rating of 1226. Their highest rating so far is 1424 (February 20, 2006).
Retired. The rating shown is the rating at retirement.
- 2023 record
- 0-5
- Record since 1927
- 73-165
- Win rate
- .307
Rating at retirement (not included in the rating list)
The rating is calculated from published game results. It does not include any adjustment for playing Black.
Professional ratingsFind a player
Rating history — professional
The “All” view starts at 2006; earlier years are used only to warm up the calculation and are not shown.
Recent games
| Date | Opponent and tournament | Result | Change |
|---|---|---|---|
| April 13, 2023 | Cho ChienGosei Colors unknown | Loss | ↓13 |
| February 27, 2023 | Kono YukioAgon Kiriyama Cup Colors unknown | Loss | ↓25 |
| February 16, 2023 | Nakamura HidehitoMeijin Colors unknown | Loss | ↓6 |
| January 26, 2023 | Komatsu HidekoJudan Colors unknown | Loss | ↓22 |
| January 16, 2023 | Ko MoseiKisei First Tournament Preliminary Round 2 Colors unknown | Loss | ↓12 |
| December 1, 2022 | Takahashi HideoKisei First Tournament Preliminary Round 1 Colors unknown | Win | ↑21 |
| September 19, 2022 | Yo KagenRyusei Colors unknown | Loss | ↓3 |
| July 21, 2022 | Izumitani HideoTengen Colors unknown | Loss | ↓6 |
| May 9, 2022 | Yo KaeiOza Colors unknown | Loss | ↓6 |
| April 21, 2022 | Kibe NatsukiGosei Colors unknown | Loss | ↓8 |
| February 21, 2022 | Tsuji HanaAgon Kiriyama Cup Colors unknown | Loss | ↓7 |
| February 7, 2022 | Michael RedmondKisei First Tournament Preliminary Round 2 Colors unknown | Loss | ↓4 |
| January 24, 2022 | Jo BunenMeijin Colors unknown | Loss | ↓9 |
| October 11, 2021 | Nyu EikoHoninbo Colors unknown | Loss | ↓2 |
| September 30, 2021 | Suzuki YoshimichiJudan Colors unknown | Loss | ↓7 |
| September 23, 2021 | Takeuchi KosukeTengen Colors unknown | Loss | ↓4 |
| September 2, 2021 | Kamimura HaruoTengen Colors unknown | Win | ↑25 |
| July 19, 2021 | Fujisawa KazunariRyusei Colors unknown | Loss | ↓7 |
| May 6, 2021 | Takemiya YokoOza Colors unknown | Loss | ↓10 |
| April 22, 2021 | Mori ChisakiMeijin Colors unknown | Loss | ↓10 |
Head-to-head
| Opponent | Total | As Black | As White |
|---|---|---|---|
| Mizuma Toshifumi | 1-3.250 | 0-0 | 0-0 |
| Tokimoto Hajime | 0-4.000 | 0-0 | 0-3 |
| Kubo Hideo | 1-3.250 | 0-0 | 0-0 |
| Kataoka Satoshi | 0-4.000 | 0-1 | 0-2 |
| Michael Redmond | 1-3.250 | 0-0 | 1-1 |
| Hashimoto Yujiro | 0-3.000 | 0-0 | 0-0 |
| Nakayama Kaoru | 3-01.000 | 0-0 | 0-0 |
| Suzuki Isao | 1-2.333 | 0-0 | 0-0 |
| Ohira Shuzo | 0-3.000 | 0-1 | 0-2 |
| Yamamoto Masato | 1-2.333 | 0-0 | 0-0 |
Record by year
Counted by calendar year, January to December (default wins and losses are included; jigo and no-result games are not). Only games from 1927 onward are counted, so these totals do not match the career records published by the two Ki-in.
| Year | Record | Win rate |
|---|---|---|
| 2023 | 0-5 | .000 |
| 2022 | 1-7 | .125 |
| 2021 | 3-10 | .231 |
| 2020 | 4-7 | .364 |
| 2019 | 3-9 | .250 |
| 2018 | 1-12 | .077 |
| 2017 | 8-11 | .421 |
| 2016 | 3-9 | .250 |
| 2015 | 5-10 | .333 |
| 2014 | 3-3 | .500 |
| 2013 | 3-6 | .333 |
| 2012 | 3-5 | .375 |
| 2011 | 1-8 | .111 |
| 2010 | 2-0 | 1.000 |
| 2009 | 0-1 | .000 |
| 2008 | 0-1 | .000 |
| 2006 | 1-5 | .167 |
| 2005 | 7-9 | .438 |
| 2004 | 2-10 | .167 |
| 2003 | 10-10 | .500 |
| 2002 | 4-7 | .364 |
| 1999 | 1-1 | .500 |
| 1998 | 0-1 | .000 |
| 1993 | 0-3 | .000 |
| 1992 | 0-1 | .000 |
| 1990 | 2-1 | .667 |
| 1989 | 0-1 | .000 |
| 1988 | 0-1 | .000 |
| 1985 | 3-3 | .500 |
| 1984 | 0-1 | .000 |
| 1983 | 0-1 | .000 |
| 1982 | 0-2 | .000 |
| 1981 | 0-1 | .000 |
| 1980 | 3-3 | .500 |
| Total | 73-165 | .307 |
Calculated from games played between 1927 and 2026 (as of September 17, 2026).