World Championship BT
2017-08-07 -> 2017-08-12
Rating: 2378.95 -> 2395.73
Opponent Rating Round Result R. Change
Rahumagi Brenet 1844 1
win
+1.41
Sun In 2107 2
win
+5.55
Liu Yang 2340 3
draw
-1.77
Lan Zhiren 2431 4
win
+18.40
Yang Yu-Hsiung 2134 5
win
+6.28
Tang Kai Lam 2431 6
loss
-13.62
Topkin Georg-Romet 1992 7
win
+3.12
Huang Yen-Hua 2177 8
win
+7.63
Okabe Hiroshi 2509 9
loss
-10.24
World Championship QT
2017-08-03 -> 2017-08-05
Rating: 2353.38 -> 2378.95
Opponent Rating Round Result R. Change
Rahumagi Brenet 1833 1
win
+1.53
Sushkov Vladimir 2506 2
win
+22.64
Lan Zhiren 2459 3
loss
-11.26
Mei Fan 2400 4
loss
-13.85
Okabe Hiroshi 2540 5
draw
+7.87
Kim Hong Soon 2102 6
win
+6.12
Lu  Wei-Yuan 2276 7
win
+12.52
55 Meijinsen Qualification East Japan area 2nd round
2017-06-10 -> 2017-06-11
Rating: 2412.33 -> 2353.38
Opponent Rating Round Result R. Change
Tomobe Katsuhiro 1989 1
win
+2.58
Tamada Yoichi 2388 2
loss
-17.12
Ono Takayuki 2136 3
loss
-26.58
Miyamoto Syunju 1949 4
win
+2.09
Sato Kiyotomi 2325 5
loss
-19.92
12th All Japan Championship
2017-03-25 -> 2017-03-26
Rating: 2422.88 -> 2412.33
Opponent Rating Round Result R. Change
Kusajima Masato 2109 1
win
+4.52
Nakamura Shigeru 2722 2
loss
-4.84
Ishitani Shin-ichi 2170 3
win
+6.06
Nakayama Tomoharu 2528 4
win
+20.70
Kamiya Shunsuke 2510 5
loss
-12.07
Tachi Masaya 2204 6
loss
-24.91
20 New Year (Mikami) Cup
2017-01-22
Rating: 2420.4 -> 2422.88
Opponent Rating Round Result R. Change
Sato Kiyotomi 2390 S2
win
+14.62
Nakamura Shigeru 2684 S3
loss
-5.74
Ishitani Shin-ichi 2217 S4
win
+7.58
Okabe Hiroshi 2464 S5
loss
-13.98
54 Meijinsen Tournament
2016-09-17 -> 2016-09-19
Rating: 2412.76 -> 2420.4
Opponent Rating Round Result R. Change
Matsuura Hiroshi 2314 1
win
+11.60
Kamiya Shunsuke 2391 2
loss
-16.98
Hasegawa Kazuto 2513 3
draw
+4.51
Iio Yoshihiro 2350 4
draw
-2.83
Tanaka Toshiki 2404 5
win
+15.63
Nakayama Tomoharu 2542 6
draw
+5.70
Maruyama Yasushi 2159 7
draw
-9.97
Kuga Akio 2316 8
win
+11.68
Okabe Hiroshi 2508 9
loss
-11.68
33 Kanto Championship
2016-07-30 -> 2016-07-31
Rating: 2431.11 -> 2412.76
Opponent Rating Round Result R. Change
Kato Yasuhiro 1862 1
win
+1.17
Nakamura Shigeru 2672 2
loss
-6.39
Okabe Hiroshi 2497 3
loss
-13.00
Nakamura Souta 2149 4
win
+5.29
Nakayama Tomoharu 2554 5
draw
+5.45
Ishitani Shin-ichi 2143 6
draw
-10.87
54 Meijinsen Qualification East Japan area 2nd round
2016-06-11 -> 2016-06-12
Rating: 2398.26 -> 2431.11
Opponent Rating Round Result R. Change
Kusajima Masato 2128 1
win
+5.58
Kamiya Shunsuke 2450 2
win
+18.40
Tamada Yoichi 2395 3
win
+15.86
Mitsumori Masao 2145 4
draw
-9.94
Okabe Hiroshi 2463 5
draw
+2.95
19 Mikami Cup
2016-03-13
Rating: 2406.3 -> 2398.26
Opponent Rating Round Result R. Change
Ishitani Shin-ichi 2160 S1
win
+6.25
Nakamura Shigeru 2646 S2
loss
-6.41
Kusajima Masato 2160 S3
win
+6.26
Okabe Hiroshi 2447 S4
loss
-14.13
16th Kanto Renju Emperor Tournament Final
2016-02-14
Rating: 2429.14 -> 2406.3
Opponent Rating Round Result R. Change
Nakayama Tomoharu 2531 1
loss
-11.42
Nakayama Tomoharu 2531 2
loss
-11.42
11th All Japan Championship
2016-01-10 -> 2016-01-11
Rating: 2441.72 -> 2429.14
Opponent Rating Round Result R. Change
Maruta Hiroki 1977 1
win
+2.07
Nakamura Souta 2039 2
win
+2.88
Okabe Hiroshi 2458 3
win
+16.76
Nakayama Tomoharu 2527 4
loss
-12.13
Sato Kiyotomi 2322 5
loss
-21.29
Tamada Yoichi 2422 6
draw
-0.88
16 Kanto Renju Emperor Tournament 2nd round
2015-12-13
Rating: 2408.01 -> 2441.72
Opponent Rating Round Result R. Change
Sato Kiyotomi 2296 1
win
+11.02
Ono Takayuki 2116 2
win
+5.03
Okabe Hiroshi 2470 3
loss
-13.14
Nakayama Tomoharu 2518 4
draw
+4.93
Nakamura Shigeru 2657 5
win
+25.86
16 Kanto Renju Emperor Tournament 1st round
2015-11-15
Rating: 2359.37 -> 2408.01
Opponent Rating Round Result R. Change
Ishitani Shin-ichi 2158 1
win
+7.66
Sato Kiyotomi 2271 2
win
+12.02
Okabe Hiroshi 2515 3
win
+22.74
Ono Takayuki 2112 4
win
+6.22
53 Meijinsen Tournament
2015-09-20 -> 2015-09-22
Rating: 2328.07 -> 2359.37
Opponent Rating Round Result R. Change
Hasegawa Kazuto 2477 1
loss
-9.53
Oosumi Yuuki 2651 2
win
+27.70
Ishitani Shin-ichi 2144 3
win
+8.24
Nakayama Tomoharu 2487 4
draw
+6.86
Kawamura Norihiko 2423 5
loss
-11.69
Tamada Yoichi 2414 6
loss
-12.11
Iio Yoshihiro 2321 7
draw
-0.30
Matsuura Hiroshi 2294 8
win
+14.45
Okabe Hiroshi 2510 9
draw
+7.69
World Championship BT
2015-08-07 -> 2015-08-12
Rating: 2353.8 -> 2328.07
Opponent Rating Round Result R. Change
Huang Xiuyi 1742 1
win
+0.92
Miyagawa Junzo 2081 2
loss
-26.48
Topkin Georg-Romet 1834 3
win
+1.54
Wang Chih-Kung 2001 4
win
+3.72
Sirategyan Karen 1997 5
loss
-28.36
Ishitani Shin-ichi 2218 6
win
+10.05
Lavrik-Karmazin  Maksim 1578 7
win
+0.36
Mano Yoshihisa 2144 8
win
+7.38
Nakayama Tomoharu 2469 9
draw
+5.13
World Championship QT
2015-08-03 -> 2015-08-05
Rating: 2342.55 -> 2353.8
Opponent Rating Round Result R. Change
Topkin Georg-Romet 1796 1
win
+1.32
Nakayama Tomoharu 2531 2
win
+23.95
Kamiya Shunsuke 2399 3
loss
-13.39
Wang Qingqing 2312 4
draw
-1.39
Huang Yen-Hua 2118 5
win
+6.91
Epifanov Dmitry 2308 6
loss
-17.54
Lin Liu-Min 2239 7
win
+11.39
Kanto Championship
2015-07-19 -> 2015-07-20
Rating: 2301.52 -> 2342.55
Opponent Rating Round Result R. Change
Maruta Hiroki 1928 1
win
+3.35
Nakamura Shigeru 2699 2
win
+29.06
Okabe Hiroshi 2568 3
draw
+10.35
Iwano Fumio 2055 4
win
+6.24
Nakayama Tomoharu 2493 5
loss
-7.98
Zhao Jiadong   6
win
-
53 Meijinsen Qualification East Japan area 2nd round
2015-06-07 -> 2015-06-14
Rating: 2270.78 -> 2301.52
Opponent Rating Round Result R. Change
Tamada Yoichi 2356 1
loss
-12.13
Sato Kiyotomi 2315 2
win
+18.04
Ono Takayuki 2168 3
win
+11.44
Kamiya Shunsuke 2420 5
draw
+6.49
Nakamura Souta 2046 6
win
+6.90
53 Meijinsen Qualification East Japan area 1st round
2015-05-10
Rating: 2256.29 -> 2270.78
Opponent Rating Round Result R. Change
Mitsumori Masao 2136 1
win
+10.71
Iwano Fumio 2062 2
win
+7.88
Nakamura Souta 2011 3
win
+6.29
Kamiya Shunsuke 2383 4
loss
-10.39
10th All Japan Championship
2015-03-28 -> 2015-03-29
Rating: 2251.48 -> 2256.29
Opponent Rating Round Result R. Change
Fujikawa Masaki 1883 1
win
+3.43
Kamiya Shunsuke 2374 2
loss
-10.58
Kato Yasuhiro 1988 3
win
+5.77
Mitsumori Masao 2196 4
win
+13.51
Ishitani Shin-ichi 2277 5
loss
-14.80
Tanizaki Ryusuke 2045 6
win
+7.48
12 Kanto Renju Emperor Tournament 1st round
2011-10-23
Rating: 2291.06 -> 2251.48
Opponent Rating Round Result R. Change
Oosumi Yuuki 2542 1
loss
-6.08
Suzuki Rin 1878 2
win
+2.73
Isobe Taizan 2253 3
loss
-17.71
Fukui Nobuhiro 2235 4
loss
-18.52
49 Meijinsen Qualification East-Japan area 1st round
2011-06-12
Rating: 2319.93 -> 2291.06
Opponent Rating Round Result R. Change
Isobe Taizan 2258 1
loss
-18.82
Kudomi Takahiro 2275 2
win
+13.96
Nakayama Tomoharu 2272 3
loss
-18.18
Ono Takayuki 2239 4
win
+12.36
Nakayama Tomoharu 2272 ex
loss
-18.18
14th Mikami Cup Tournament
2011-01-30
Rating: 2343.31 -> 2319.93
Opponent Rating Round Result R. Change
Kon Akira 1847 A1
win
+1.74
Iwano Fumio 2067 A2
loss
-26.57
Matsuoka Teruo 1813 A3
win
+1.44
Kise Katsumi   A4
win
-
Isobe Seiji   A5
win
-
8th Middle-dan Players Tournament
2009-08-29 -> 2009-08-30
Rating: 2330 -> 2343.31
Opponent Rating Round Result R. Change
Yamamoto Yasuhiro 2073 1
win
+5.94
Gakumazawa Hideaki 2153 2
win
+8.49
Sato Kiyotomi 2368 3
loss
-14.23
Miyagawa Junzo 2134 4
win
+7.82
Maruyama Yasushi 2149 5
draw
-7.66
Ono Takayuki 2262 6
win
+12.94
RIF update 2009-05-15
2009-05-15
Rating: 2316.96 -> 2330
46th Meijinsen Qualification East-Japan area 2nd round
2008-07-13
Rating: 2335.37 -> 2316.96
Opponent Rating Round Result R. Change
Kawamura Norihiko 2566
loss
-6.69
Sato Kiyotomi 2237
loss
-20.37
Arita Nobuyoshi 2282
win
+13.57
Isobe Taizan 2367
loss
-14.53
Nagao Noriaki 2188
win
+9.61
46th Meijinsen Qualification East-Japan area 1st round
2008-06-15
Rating: 2287.43 -> 2335.37
Opponent Rating Round Result R. Change
Sato Kiyotomi 2221 1
win
+13.01
Tanno Yoshitaka 2069 2
win
+7.11
Ono Takayuki 2247 3
win
+14.15
Kudomi Takahiro 2236 4
win
+13.67
25th Kanto Shineisen Tournament
2008-04-13
Rating: 2259 -> 2287.43
Opponent Rating Round Result R. Change
Fujikawa Masaki 2073 1
win
+8.18
Watanabe Tatsuya 1991 2
win
+5.64
Tomobe Katsuhiro 1937 3
win
+4.34
Iwano Fumio 2093 4
win
+8.92
Ono Takayuki 2288 5
draw
+1.34
2nd All Japan Championship (WC Qualification)
2007-03-24 -> 2007-03-25
Rating: 2239.25 -> 2259
Opponent Rating Round Result R. Change
Kuramoto Hideharu 1951 1
win
+5.12
Yamaguchi Yusui 2575 2
loss
-4.04
Iio Yoshihiro 2428 3
loss
-8.07
Maruta Hiroki 1937 4
win
+4.79
Tanno Yoshitaka 2049 5
win
+8.02
Ono Takayuki 2193 6
win
+13.92
10th Mikami Cup Tournament, A-class
2007-01-28
Rating: 2239.85 -> 2239.25
Opponent Rating Round Result R. Change
Matsuoka Teruo 1890 1
win
+3.79
Iwano Fumio 2003 2
loss
-25.48
Maruta Hiroki 1914 3
win
+4.26
Tomobe Katsuhiro 2069 4
win
+8.73
Kobayashi Koichi 2052 5
win
+8.10
23rd Kanto Shinei Tournament
2006-09-10
Rating: 2278.23 -> 2239.85
Opponent Rating Round Result R. Change
Teshima Masakatsu 1885 1
win
+3.03
Maruta Hiroki 1869 1
win
+2.78
Tanizaki Ryusuke 1998 2
loss
-26.67
Matsuoka Teruo 1897 3
win
+3.22
Iwano Fumio 1998 4
win
+5.34
Watanabe Tatsuya 2021 5
loss
-26.07
Meijin-sen Qual, East Japan area 1st round
2006-06-18
Rating: 2261.16 -> 2278.23
Opponent Rating Round Result R. Change
Maruta Koji 2159 1
win
+11.47
Mitsumori Masao 2266 2
win
+16.26
Kudomi Takahiro 2181 3
win
+12.38
Kamemoto Daichi 2097 4
loss
-23.03
23rd Kanto Championship
2006-05-21
Rating: 2217.09 -> 2261.16
Opponent Rating Round Result R. Change
Kawamura Norihiko 2673 1
loss
-2.16
Tanizaki Ryusuke 2010 2
win
+7.45
Kudomi Takahiro 2210 3
win
+15.71
Isobe Taizan 2405 4
win
+23.92
Nakamura Shigeru 2841 5
loss
-0.85
46th Suisei-sen tournament final round
2006-04-16
Rating: 2228.19 -> 2217.09
Opponent Rating Round Result R. Change
Itami Yoshiyuki 2118
win
+11.11
Nagao Noriaki 2113
win
+10.91
Kato Yasuhiro 2076
loss
-22.56
Hara Masao 2001
win
+6.81
Ono Takayuki 2198
loss
-17.38
1st All Japan Championship
2006-03-25 -> 2006-03-26
Rating: 2204.16 -> 2228.19
Opponent Rating Round Result R. Change
Tadokoro Hosai 1982 1
win
+6.98
Isobe Taizan 2394 2
loss
-8.02
Tanizaki Ryusuke 1974 3
loss
-25.27
Itami Yoshiyuki 2102 4
win
+11.44
Sato Kiyotomi 2299 5
win
+20.27
Miyoshi Takeo 2261 6
win
+18.63
46th Suisei-sen Tournament - 1st round
2006-03-12
Rating: 2208.32 -> 2204.16
Opponent Rating Round Result R. Change
Fujikawa Masaki   1
win
-
Tadokoro Hosai 2004 2
win
+7.54
Nagao Noriaki 2101 3
loss
-20.77
Tomobe Katsuhiro 2047 4
win
+9.07
9th Mikami Cup - A Class
2006-01-29
Rating: 2206.68 -> 2208.32
Opponent Rating Round Result R. Change
Iwano Fumio 1952 1
win
+6.01
Teshima Masakatsu   2
win
-
Ono Takayuki 2167 3
loss
-17.79
Nakata Shinsuke 1931 4
win
+5.44
Watanabe Tatsuya 2015 5
win
+7.99
37th Kyoto Classified - group 1
2005-11-13
Rating: 2199.58 -> 2206.68
Opponent Rating Round Result R. Change
Ozawa Tetsushi   1
win
-
Itami Yoshiyuki 2133 2
win
+12.98
Oosumi Yuuki 2305 3
loss
-11.26
Hayashi Koji   4
win
-
Ono Takayuki 2171 5
win
+14.71
Shinoda Kiyoshi 2353 6
loss
-9.33
6th Kanto Renju Emperor Tournament - Semifinal
2005-10-23
Rating: 2219.29 -> 2199.58
Opponent Rating Round Result R. Change
Yamaguchi Yusui 2478
loss
-5.87
Okabe Hiroshi 2472
loss
-6.05
Isobe Taizan 2437
loss
-7.10
Kamemoto Daichi 2072
loss
-22.37
Sato Kiyotomi 2348
win
+21.68
6th Kanto Renju Emperor Tournament - 1st round
2005-10-22
Rating: 2231.23 -> 2219.29
Opponent Rating Round Result R. Change
Koyama Masayuki   1
win
-
Sato Kiyotomi 2321 2
loss
-11.94
Teshima Masakatsu   3
win
-
Nakata Shinsuke   4
win
-
22nd Kanto Shineisen Tournament
2005-09-11
Rating: 2227.89 -> 2231.23
Opponent Rating Round Result R. Change
Teshima Masakatsu   1
win
-
Tadokoro Hosai 2036 2
win
+7.98
Tomobe Katsuhiro 1966 3
win
+5.80
Arita Nobuyoshi 2209 4
loss
-16.85
Kamemoto Daichi 1987 5
win
+6.40
43rd Meijinsen Qualification: East Japan 1st round
2005-06-12
Rating: 2232.74 -> 2227.89
Opponent Rating Round Result R. Change
Maruta Koji 2263 1
win
+17.39
Kudomi Takahiro 2269 2
loss
-14.33
Arita Nobuyoshi 2189 3
loss
-17.98
Ohno Syunzo 2097 4
win
+10.07
22nd Kanto Championship
2005-05-22
Rating: 2231.61 -> 2232.74
Opponent Rating Round Result R. Change
Mitsumori Masao 2153 1
win
+12.47
Yamaguchi Yusui 2470 2
loss
-6.47
Kudomi Takahiro 2302 3
win
+19.24
Maruta Koji 2263 4
loss
-14.54
Sato Kiyotomi 2379 5
loss
-9.58
45th Suisei-sen Tournament
2005-03-20
Rating: 2200.81 -> 2231.61
Opponent Rating Round Result R. Change
Muramatsu Yasuhiro   1
win
-
Arita Nobuyoshi 2160 2
win
+14.13
Sano Hiroyuki 2215 3
win
+16.67
Kobayashi Koichi   4
win
-
8th Mikami Cup - A Class
2005-01-23
Rating: 2200 = 2160 + (400 * (5.5 - 4.5)) / 10
Opponent Rating Round Result R. Change
Arita Nobuyoshi 2182 1
draw
-
Nagumo Natsuhiko 2122 2
win
-
Kato Yasuhiro 2028 3
win
-
Nagao Noriaki 2106 4
loss
-
Sato Kiyotomi 2315 5
win
-
5th Kanto Renju Emperor Tournament - 1st round
2004-11-28
Provisional: 2090 = 2170 + (400 * (2 - 3)) / 5
Opponent Rating Round Result R. Change
Mitsumori Masao 2212 1
loss
-
Tomobe Katsuhiro   2
loss
-
Mao Richu   3
win
-
Iwano Fumio   4
loss
-
21st Kanto Shineisen Tournament
2004-09-12
Provisional: 2160 = 2160 + (400 * (2 - 2)) / 4
Opponent Rating Round Result R. Change
Shibata Saturo   1
win
-
Sato Kiyotomi 2307 2
loss
-
Sato Takuma 2103 3
win
-
Tashiro Yuichi   4
draw
-
Hara Masao 2177 5
win
-
7th Mikami Cup - A class
2004-01-25
Provisional: 1651 = 2051 + (400 * (0 - 1)) / 1
Opponent Rating Round Result R. Change
Kawabe Tatsuya   4
win
-
Itami Yoshiyuki   5
win
-
20th Kanto Shineisen Tournament
2003-09-21
Provisional: 1651 = 2051 + (400 * (0 - 1)) / 1
Opponent Rating Round Result R. Change
Kato Yasuhiro 2051 1
loss
-
Maruta Hiroki   2
win
-
Sato Takuma   3
loss
-
Sasaki Miyu   4
win
-
Itami Yoshiyuki   5
loss
-
Name: Jun
Surname: Koyama
Rating: 2395
Top Rating: 2441

Country: Japan
City: Tokyo

Wins: 148
Losses: 81
Draws: 23
Gy1: 31
Gy2: 72
Gy5: 117
Hover the mouse over the opponent's name to see the personal score of Jun Koyama with this player.
Time: 0.0187230110168 sec.