Koyama Jun (小山純)

Place: Tokyo, Japan

Rating: 2582.41, Std: 194.57, Rank: 66

First game: 2003-09-21, Last game: 2022-05-22

Top rating: 2643.13 (2015-11-15)

Games: 349, Wins: 200, Draws: 35, Losses: 114

Gy1: 0, Gy2: 0, Gy5: 4

60th Meijinsen Qualification Kanto area 1st round
Date	2022-05-22		Rating	2582.41
Round	Color	Result	Opponent
1	White	Win	Tomobe Katsuhiro	2130.39
2	White	Win	Maruta Hiroki	2205.49
3	Black	Draw	Fujita Maiko	2416.91
4	Black	Draw	Yokoyama Shota	2453.55
57 Meijinsen Tournament
Date	2019-09-16		Rating	2607.16
Round	Color	Result	Opponent
1	Black	Draw	Inoue Fumiya	2417.31
2	White	Loss	Kamiya Shunsuke	2822.45
3	Black	Loss	Kawamura Norihiko	2661.60
4	White	Win	Matsuura Hiroshi	2359.04
5	Black	Loss	Nakayama Tomoharu	2825.22
6	White	Loss	Kawano Takahisa	2457.52
7	White	Loss	Hasegawa Kazuto	2610.33
8	White	Win	Okabe Hiroshi	2724.27
9	Black	Win	Ishitani Shin-ichi	2382.55
World Championship 2019, AT
Date	2019-08-10		Rating	2613.21
Round	Color	Result	Opponent
1	Black	Draw	Mei Fan	2705.63
2	Black	Win	Oll Aivo	2744.80
3	Black	Win	Inoue Fumiya	2421.49
4	Black	Win	Epifanov Dmitry	2673.33
5	Black	Loss	Nakayama Tomoharu	2819.80
6	Black	Win	Okabe Hiroshi	2719.71
7	Black	Draw	Kamiya Shunsuke	2819.63
8	Black	Draw	Gardström Petter	2702.17
9	White	Loss	Fedotov Denis	2682.62
10	White	Loss	Cao Dong	2782.28
11	Black	Loss	Sushkov Vladimir	2841.31
World Championship 2019, QT
Date	2019-08-02		Rating	2613.13
Round	Color	Result	Opponent
1	White	Win	Sandstrom Richard	2376.09
2	White	Win	Li Xiaoqing	2658.61
3	Black	Loss	Mesila Villem	2667.78
4	Black	Win	Wai Chan Keong	2786.75
5	Black	Draw	Fedotov Denis	2685.28
6	White	Loss	Gardström Petter	2703.82
7	White	Win	Topkin Georg-Romet	2629.15
57 Meijinsen Qualification East Japan area 2nd round
Date	2019-06-23		Rating	2606.81
Round	Color	Result	Opponent
1	Black	Win	Maruta Hiroki	2185.86
2	Black	Win	Maruta Koji	2141.39
3	White	Win	Inoue Fumiya	2424.99
4	Black	Win	Kusajima Masato	2257.36
5	White	Win	Ono Takayuki	2398.36
14th All Japan Championship
Date	2019-03-31		Rating	2586.48
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2288.17
2	Black	Win	Chigira Makoto	2090.89
3	White	Draw	Inoue Fumiya	2425.74
4	White	Win	Ono Takayuki	2396.93
5	Black	Loss	Nakamura Shigeru	2994.30
6	Black	Loss	Okabe Hiroshi	2699.12
19 Renju Emperor Tournament Kanto area 1st round
Date	2018-10-21		Rating	2568.78
Round	Color	Result	Opponent
1	Black	Win	Demachi Koichiro	1924.75
2	White	Loss	Iwano Fumio	2248.23
3	White	Draw	Ishitani Shin-ichi	2425.31
4	White	Loss	Inoue Fumiya	2404.50
56 Meijinsen Tournament
Date	2018-09-17		Rating	2571.67
Round	Color	Result	Opponent
1	Black	Win	Kuga Akio	2424.51
2	Black	Loss	Matsuura Hiroshi	2351.86
3	White	Win	Okabe Hiroshi	2701.11
5	Black	Win	Kawamura Norihiko	2654.27
6	Black	Loss	Ishitani Shin-ichi	2428.08
7	Black	Loss	Kamiya Shunsuke	2798.42
8	White	Loss	Nakamura Shigeru	2999.16
9	White	Win	Hasegawa Kazuto	2576.55
35 Kanto Championship
Date	2018-07-16		Rating	2574.69
Round	Color	Result	Opponent
4	Black	Loss	Sato Kiyotomi	2442.22
5	White	Win	Iwano Fumio	2249.14
6	White	Win	Fujikawa Masaki	2101.64
56 Meijinsen Qualification East Japan area 2nd round
Date	2018-06-25		Rating	2576.84
Round	Color	Result	Opponent
1	White	Win	Kusajima Masato	2306.01
2	Black	Win	Sato Kiyotomi	2442.87
3	White	Loss	Ono Takayuki	2390.71
56 Meijinsen Qualification Kanto area 1st round
Date	2018-05-13		Rating	2582.44
Round	Color	Result	Opponent
1	Black	Loss	Mitsumori Masao	2332.32
2	Black	Win	Iwano Fumio	2258.52
3	Black	Win	Maruta Hiroki	2154.56
4	White	Win	Sato Kiyotomi	2442.18
Team World Championship 2018
Date	2018-05-05		Rating	2583.74
Round	Color	Result	Opponent
1	Black	Win	Lillemaa Argo	2197.96
2	Black	Win	Purk Andry	2635.33
4	White	Win	Kachaev Denis	2543.40
5	Black	Win	Nikonov Konstantin	2693.33
6	Black	Win	Liu Yang	2636.92
7	White	Win	Lavrik-Karmazin Maksim	2500.04
8	White	Draw	Artemyev Sergey	2578.58
9	Black	Loss	Liu Yang	2636.92
10	White	Loss	Purk Andry	2635.33
13th All Japan Championship
Date	2018-01-28		Rating	2579.37
Round	Color	Result	Opponent
1	White	Loss	Ono Takayuki	2383.89
2	White	Loss	Ishitani Shin-ichi	2417.64
3	White	Loss	Miyamoto Syunju	2266.79
5	White	Win	Sato Kiyotomi	2433.56
6	Black	Win	Maruta Hiroki	2147.02
18 Kanto Renju Emperor Tournament 2nd round
Date	2017-12-17		Rating	2586.59
Round	Color	Result	Opponent
1	Black	Draw	Sato Kiyotomi	2436.46
2	Black	Win	Miyamoto Syunju	2272.60
3	Black	Loss	Nakamura Shigeru	2960.21
4	Black	Loss	Okabe Hiroshi	2719.95
5	White	Win	Kusajima Masato	2302.31
18 Kanto Renju Emperor Tournament 1st round
Date	2017-11-01		Rating	2596.13
Round	Color	Result	Opponent
1	Black	Win	Koyama Akihiro	1964.76
2	White	Draw	Okabe Hiroshi	2721.49
3	Black	Win	Ono Takayuki	2378.88
4	White	Win	Kusajima Masato	2298.50
World Championship 2017, BT
Date	2017-08-12		Rating	2607.77
Round	Color	Result	Opponent
1	Black	Win	Rahumägi Brenet	2330.70
2	Black	Win	Sun In	2434.49
3	Black	Draw	Liu Yang	2672.19
4	Black	Win	Lan Zhiren	2638.76
5	Black	Win	Yang Yu-Hsiung	2434.83
6	Black	Loss	Tang Kai Lam	2772.30
7	Black	Win	Topkin Georg-Romet	2525.51
8	White	Win	Huang Yen-Hua	2462.54
9	Black	Loss	Okabe Hiroshi	2720.99
World Championship 2017, QT
Date	2017-08-05		Rating	2607.68
Round	Color	Result	Opponent
1	White	Win	Rahumägi Brenet	2330.55
2	White	Win	Sushkov Vladimir	2875.90
3	Black	Loss	Lan Zhiren	2637.89
4	Black	Loss	Mei Fan	2697.48
5	White	Draw	Okabe Hiroshi	2721.08
6	Black	Win	Kim Su Chan	2308.01
7	Black	Win	Lu Wei-Yuan	2604.17
55 Meijinsen Qualification East Japan area 2nd round
Date	2017-06-11		Rating	2601.08
Round	Color	Result	Opponent
1	Black	Win	Tomobe Katsuhiro	2162.50
2	White	Loss	Tamada Yoichi	2538.60
3	White	Loss	Ono Takayuki	2376.59
4	Black	Win	Miyamoto Syunju	2269.71
5	Black	Loss	Sato Kiyotomi	2471.00
12th All Japan Championship
Date	2017-03-26		Rating	2607.65
Round	Color	Result	Opponent
1	Black	Win	Kusajima Masato	2287.47
2	Black	Loss	Nakamura Shigeru	2966.75
3	Black	Win	Ishitani Shin-ichi	2394.65
4	Black	Win	Nakayama Tomoharu	2794.99
5	Black	Loss	Kamiya Shunsuke	2789.42
6	White	Loss	Tachi Masaya	2530.95
20 New Year (Mikami) Cup
Date	2017-01-22		Rating	2612.12
Round	Color	Result	Opponent
S2	Black	Win	Sato Kiyotomi	2492.30
S3	Black	Loss	Nakamura Shigeru	2965.05
S4	Black	Win	Ishitani Shin-ichi	2394.64
S5	Black	Loss	Okabe Hiroshi	2720.13
17 Kanto Renju Emperor Tournament 1st round
Date	2016-11-23		Rating	2615.77
Round	Color	Result	Opponent
1	Black	Win	Demachi Koichiro	1933.29
2	Black	Loss	Okabe Hiroshi	2714.52
3	Black	Win	Iwano Fumio	2270.50
4	White	Win	Ishitani Shin-ichi	2401.22
54 Meijinsen Tournament
Date	2016-09-19		Rating	2619.71
Round	Color	Result	Opponent
1	White	Win	Matsuura Hiroshi	2361.54
2	Black	Loss	Kamiya Shunsuke	2761.06
3	White	Draw	Hasegawa Kazuto	2640.03
4	White	Draw	Iio Yoshihiro	2561.89
5	Black	Win	Tanaka Toshiki	2444.63
6	Black	Draw	Nakayama Tomoharu	2778.75
7	Black	Draw	Maruyama Yasushi	2291.95
8	Black	Win	Kuga Akio	2368.38
9	White	Loss	Okabe Hiroshi	2719.02
33 Kanto Championship
Date	2016-07-31		Rating	2624.02
Round	Color	Result	Opponent
1	White	Win	Kato Yasuhiro	2045.07
2	Black	Loss	Nakamura Shigeru	2956.08
3	Black	Loss	Okabe Hiroshi	2723.19
4	Black	Win	Nakamura Souta	2276.12
5	Black	Draw	Nakayama Tomoharu	2777.64
6	Black	Draw	Ishitani Shin-ichi	2388.23
54 Meijinsen Qualification East Japan area 2nd round
Date	2016-06-12		Rating	2630.57
Round	Color	Result	Opponent
1	White	Win	Kusajima Masato	2267.82
2	Black	Win	Kamiya Shunsuke	2728.33
3	White	Win	Tamada Yoichi	2569.74
4	Black	Draw	Mitsumori Masao	2354.71
5	White	Draw	Okabe Hiroshi	2725.46
19 Mikami Cup
Date	2016-03-13		Rating	2632.97
Round	Color	Result	Opponent
S1	White	Win	Ishitani Shin-ichi	2392.93
S2	Black	Loss	Nakamura Shigeru	2941.97
S3	White	Win	Kusajima Masato	2264.87
S4	Black	Loss	Okabe Hiroshi	2721.25
16th Kanto Renju Emperor Tournament Final
Date	2016-02-14		Rating	2634.37
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2780.95
2	White	Loss	Nakayama Tomoharu	2780.95
11th All Japan Championship
Date	2016-01-11		Rating	2638.34
Round	Color	Result	Opponent
1	White	Win	Maruta Hiroki	2123.44
2	Black	Win	Nakamura Souta	2303.63
3	Black	Win	Okabe Hiroshi	2716.15
4	Black	Loss	Nakayama Tomoharu	2779.34
5	White	Loss	Sato Kiyotomi	2538.28
6	White	Draw	Tamada Yoichi	2573.53
16 Kanto Renju Emperor Tournament 2nd round
Date	2015-12-13		Rating	2642.55
Round	Color	Result	Opponent
1	White	Win	Sato Kiyotomi	2537.86
2	White	Win	Ono Takayuki	2326.29
3	Black	Loss	Okabe Hiroshi	2715.81
4	Black	Draw	Nakayama Tomoharu	2777.51
5	White	Win	Nakamura Shigeru	2925.00
16 Kanto Renju Emperor Tournament 1st round
Date	2015-11-15		Rating	2643.13
Round	Color	Result	Opponent
1	Black	Win	Ishitani Shin-ichi	2395.11
2	Black	Win	Sato Kiyotomi	2534.93
3	Black	Win	Okabe Hiroshi	2716.68
4	Black	Win	Ono Takayuki	2327.13
53 Meijinsen Tournament
Date	2015-09-22		Rating	2636.54
Round	Color	Result	Opponent
1	Black	Loss	Hasegawa Kazuto	2673.58
2	Black	Win	Oosumi Yuuki	2774.23
3	White	Win	Ishitani Shin-ichi	2393.28
4	Black	Draw	Nakayama Tomoharu	2770.54
5	White	Loss	Kawamura Norihiko	2623.81
6	White	Loss	Tamada Yoichi	2583.83
7	Black	Draw	Iio Yoshihiro	2532.69
8	White	Win	Matsuura Hiroshi	2399.44
9	Black	Draw	Okabe Hiroshi	2718.93
World Championship 2015, BT
Date	2015-08-12		Rating	2632.88
Round	Color	Result	Opponent
1	White	Win	Huang Xiuyi	2191.11
2	Black	Loss	Miyagawa Junzo	2247.83
3	Black	Win	Topkin Georg-Romet	2338.53
4	Black	Win	Wang Chih-Kung	2341.60
5	Black	Loss	Sirategyan Karen	2442.26
6	Black	Win	Ishitani Shin-ichi	2395.86
7	Black	Win	Lavrik-Karmazin Maksim	2293.06
8	White	Win	Mano Yoshihisa	2365.11
9	White	Draw	Nakayama Tomoharu	2766.70
World Championship 2015, QT
Date	2015-08-05		Rating	2632.70
Round	Color	Result	Opponent
1	Black	Win	Topkin Georg-Romet	2337.09
2	Black	Win	Nakayama Tomoharu	2765.29
3	Black	Loss	Kamiya Shunsuke	2706.64
4	White	Draw	Wang Qingqing	2628.60
5	Black	Win	Huang Yen-Hua	2476.92
6	Black	Loss	Epifanov Dmitry	2709.74
7	Black	Win	Lin Liu-Min	2569.81
Kanto Championship
Date	2015-07-20		Rating	2630.98
Round	Color	Result	Opponent
1	White	Win	Maruta Hiroki	2105.48
2	Black	Win	Nakamura Shigeru	2906.84
3	Black	Draw	Okabe Hiroshi	2727.83
4	White	Win	Iwano Fumio	2252.40
5	Black	Loss	Nakayama Tomoharu	2764.49
6	Black	Win	Zhao Jiadong	2137.76
53 Meijinsen Qualification East Japan area 2nd round
Date	2015-06-14		Rating	2623.70
Round	Color	Result	Opponent
1	White	Loss	Tamada Yoichi	2591.63
2	Black	Win	Sato Kiyotomi	2507.19
3	White	Win	Ono Takayuki	2325.52
5	Black	Draw	Kamiya Shunsuke	2693.41
6	White	Win	Nakamura Souta	2295.20
53 Meijinsen Qualification East Japan area 1st round
Date	2015-05-10		Rating	2615.93
Round	Color	Result	Opponent
1	Black	Win	Mitsumori Masao	2326.84
2	Black	Win	Iwano Fumio	2246.83
3	Black	Win	Nakamura Souta	2293.41
4	White	Loss	Kamiya Shunsuke	2687.56
10th All Japan Championship
Date	2015-03-29		Rating	2606.60
Round	Color	Result	Opponent
1	White	Win	Fujikawa Masaki	2094.18
2	White	Loss	Kamiya Shunsuke	2676.62
3	Black	Win	Kato Yasuhiro	2063.53
4	Black	Win	Mitsumori Masao	2325.32
5	Black	Loss	Ishitani Shin-ichi	2425.59
6	Black	Win	Tanizaki Ryusuke	2203.00
12 Kanto Renju Emperor Tournament 1st round
Date	2011-10-23		Rating	2438.76
Round	Color	Result	Opponent
1	Black	Loss	Oosumi Yuuki	2771.75
2	White	Win	Suzuki Rin	1991.49
3	White	Loss	Isobe Taizan	2422.16
4	White	Loss	Fukui Nobuhiro	2473.29
49 Meijinsen Qualification East-Japan area 1st round
Date	2011-06-12		Rating	2436.20
Round	Color	Result	Opponent
1	Black	Loss	Isobe Taizan	2409.23
2	Black	Win	Kudomi Takahiro	2413.77
3	Black	Loss	Nakayama Tomoharu	2554.51
4	Black	Win	Ono Takayuki	2397.05
ex	Black	Loss	Nakayama Tomoharu	2554.51
28th Kanto Shineisen Tournament
Date	2011-04-17		Rating	2436.97
Round	Color	Result	Opponent
1	White	Win	Kon Akira	2007.90
2	Black	Win	Kamiya Shunsuke	2412.63
3	White	Win	Ozawa Tetsushi	2092.91
4	White	Loss	Nakayama Tomoharu	2543.04
5	Black	Win	Tomobe Katsuhiro	2230.04
5	White	Loss	Kamiya Shunsuke	2412.63
14th Mikami Cup Tournament
Date	2011-01-30		Rating	2437.96
Round	Color	Result	Opponent
A1	Black	Win	Kon Akira	2000.49
A2	White	Loss	Iwano Fumio	2132.19
A3	Black	Win	Matsuoka Teruo	1989.74
A4	Black	Win	Kise Katsumi	2521.58
A5	Black	Win	Isobe Seiji	2024.27
8th Middle-dan Players Tournament
Date	2009-08-30		Rating	2444.88
Round	Color	Result	Opponent
1	White	Win	Yamamoto Yasuhiro	2148.27
2	White	Win	Gakumazawa Hideaki	2139.19
3	Black	Loss	Sato Kiyotomi	2434.43
4	White	Win	Miyagawa Junzo	2202.75
5	White	Draw	Maruyama Yasushi	2262.61
6	Black	Win	Ono Takayuki	2403.36
46th Meijinsen Qualification East-Japan area 2nd round
Date	2008-07-13		Rating	2441.96
Round	Color	Result	Opponent
	White	Loss	Kawamura Norihiko	2656.78
	White	Loss	Sato Kiyotomi	2434.47
	White	Win	Arita Nobuyoshi	2393.03
	White	Loss	Isobe Taizan	2414.89
	Black	Win	Nagao Noriaki	2261.33
46th Meijinsen Qualification East-Japan area 1st round
Date	2008-06-15		Rating	2443.58
Round	Color	Result	Opponent
1	Black	Win	Sato Kiyotomi	2429.03
2	White	Win	Tanno Yoshitaka	2122.08
3	Black	Win	Ono Takayuki	2399.45
4	Black	Win	Kudomi Takahiro	2339.32
25th Kanto Shineisen Tournament
Date	2008-04-13		Rating	2437.37
Round	Color	Result	Opponent
1	White	Win	Fujikawa Masaki	2104.13
2	Black	Win	Watanabe Tatsuya	2156.51
3	White	Win	Tomobe Katsuhiro	2064.65
4	Black	Win	Iwano Fumio	2189.42
5	Black	Draw	Ono Takayuki	2395.73
2nd All Japan Championship (WC Qualification)
Date	2007-03-25		Rating	2376.70
Round	Color	Result	Opponent
1	White	Win	Kuramoto Hideharu	1888.44
2	Black	Loss	Yamaguchi Yusui	2648.74
3	Black	Loss	Iio Yoshihiro	2522.14
4	White	Win	Maruta Hiroki	2024.88
5	White	Win	Tanno Yoshitaka	2129.59
6	Black	Win	Ono Takayuki	2342.99
10th Mikami Cup Tournament, A-class
Date	2007-01-28		Rating	2365.73
Round	Color	Result	Opponent
1	Black	Win	Matsuoka Teruo	1875.20
2	White	Loss	Iwano Fumio	2143.75
3	Black	Win	Maruta Hiroki	2021.65
4	White	Win	Tomobe Katsuhiro	2056.04
5	Black	Win	Kobayashi Koichi	2099.04
23rd Kanto Shinei Tournament
Date	2006-09-10		Rating	2342.72
Round	Color	Result	Opponent
1	White	Win	Maruta Hiroki	2003.53
1	Black	Win	Teshima Masakatsu	1952.66
2	Black	Loss	Tanizaki Ryusuke	2127.22
3	Black	Win	Matsuoka Teruo	1854.11
4	White	Win	Iwano Fumio	2110.93
5	White	Loss	Watanabe Tatsuya	2135.61
Meijin-sen Qual, East Japan area 1st round
Date	2006-06-18		Rating	2338.79
Round	Color	Result	Opponent
1	Black	Win	Maruta Koji	2112.93
2	White	Win	Mitsumori Masao	2253.41
3	Black	Win	Kudomi Takahiro	2284.52
4	Black	Loss	Kamemoto Daichi	2207.15
23rd Kanto Championship
Date	2006-05-21		Rating	2336.43
Round	Color	Result	Opponent
1	White	Loss	Kawamura Norihiko	2664.28
2	White	Win	Tanizaki Ryusuke	2114.05
3	Black	Win	Kudomi Takahiro	2282.93
4	White	Win	Isobe Taizan	2411.31
5	White	Loss	Nakamura Shigeru	2847.08
46th Suisei-sen tournament final round
Date	2006-04-16		Rating	2329.34
Round	Color	Result	Opponent
	White	Win	Itami Yoshiyuki	2158.12
	White	Win	Nagao Noriaki	2221.81
	White	Loss	Kato Yasuhiro	2051.91
	White	Win	Hara Masao	2078.10
	Black	Loss	Ono Takayuki	2305.02
1st All Japan Championship
Date	2006-03-26		Rating	2326.39
Round	Color	Result	Opponent
1	Black	Win	Tadokoro Hosai	1930.91
2	Black	Loss	Isobe Taizan	2425.56
3	Black	Loss	Tanizaki Ryusuke	2112.97
4	White	Win	Itami Yoshiyuki	2161.02
5	Black	Win	Sato Kiyotomi	2410.74
6	White	Win	Miyoshi Takeo	2275.11
46th Suisei-sen Tournament - 1st round
Date	2006-03-12		Rating	2323.97
Round	Color	Result	Opponent
1	Black	Win	Fujikawa Masaki	2029.93
2	White	Win	Tadokoro Hosai	1930.37
3	White	Loss	Nagao Noriaki	2223.80
4	White	Win	Tomobe Katsuhiro	2091.26
9th Mikami Cup - A Class
Date	2006-01-29		Rating	2317.59
Round	Color	Result	Opponent
1	Black	Win	Iwano Fumio	2074.40
2	White	Win	Teshima Masakatsu	1957.70
3	White	Loss	Ono Takayuki	2304.19
4	White	Win	Nakata Shinsuke	1976.40
5	Black	Win	Watanabe Tatsuya	2134.00
37th Kyoto Classified - group 1
Date	2005-11-13		Rating	2304.42
Round	Color	Result	Opponent
1	Black	Win	Ozawa Tetsushi	2015.74
2	White	Win	Itami Yoshiyuki	2180.02
3	White	Loss	Oosumi Yuuki	2405.01
4	White	Win	Hayashi Koji	2005.82
5	Black	Win	Ono Takayuki	2296.52
6	White	Loss	Shinoda Kiyoshi	2346.90
6th Kanto Renju Emperor Tournament - Semifinal
Date	2005-10-23		Rating	2300.06
Round	Color	Result	Opponent
	White	Loss	Yamaguchi Yusui	2595.92
	White	Loss	Okabe Hiroshi	2591.90
	White	Loss	Isobe Taizan	2458.01
	White	Loss	Kamemoto Daichi	2180.96
	White	Win	Sato Kiyotomi	2394.91
6th Kanto Renju Emperor Tournament - 1st round
Date	2005-10-22		Rating	2299.92
Round	Color	Result	Opponent
1	White	Win	Koyama Masayuki	1729.53
2	White	Loss	Sato Kiyotomi	2394.95
3	White	Win	Teshima Masakatsu	1958.11
4	Black	Win	Nakata Shinsuke	1968.20
22nd Kanto Shineisen Tournament
Date	2005-09-11		Rating	2294.64
Round	Color	Result	Opponent
1	Black	Win	Teshima Masakatsu	1958.12
2	White	Win	Tadokoro Hosai	1927.13
3	Black	Win	Tomobe Katsuhiro	2075.53
4	Black	Loss	Arita Nobuyoshi	2343.11
5	Black	Win	Kamemoto Daichi	2170.08
43rd Meijinsen Qualification: East Japan 1st round
Date	2005-06-12		Rating	2279.35
Round	Color	Result	Opponent
1	Black	Win	Maruta Koji	2152.35
2	Black	Loss	Kudomi Takahiro	2299.86
3	White	Loss	Arita Nobuyoshi	2325.16
4	White	Win	Ohno Syunzo	2074.93
22nd Kanto Championship
Date	2005-05-22		Rating	2276.63
Round	Color	Result	Opponent
1	White	Win	Mitsumori Masao	2266.95
2	White	Loss	Yamaguchi Yusui	2562.55
3	White	Win	Kudomi Takahiro	2300.36
4	Black	Loss	Maruta Koji	2157.00
5	White	Loss	Sato Kiyotomi	2394.56
45th Suisei-sen Tournament
Date	2005-03-20		Rating	2269.46
Round	Color	Result	Opponent
1	White	Win	Muramatsu Yasuhiro	1691.65
2	White	Win	Arita Nobuyoshi	2298.91
3	White	Win	Sano Hiroyuki	2136.07
4	Black	Win	Kobayashi Koichi	2093.76
8th Mikami Cup - A Class
Date	2005-01-23		Rating	2255.87
Round	Color	Result	Opponent
1	Black	Draw	Arita Nobuyoshi	2286.52
2	Black	Win	Nagumo Natsuhiko	2056.04
3	Black	Win	Kato Yasuhiro	2024.43
4	White	Loss	Nagao Noriaki	2244.28
5	Black	Win	Sato Kiyotomi	2370.77
5th Kanto Renju Emperor Tournament - 1st round
Date	2004-11-28		Rating	2238.32
Round	Color	Result	Opponent
1	White	Loss	Mitsumori Masao	2248.54
2	Black	Loss	Tomobe Katsuhiro	2031.18
3	Black	Win	Mao Richu	1771.93
4	Black	Loss	Iwano Fumio	2040.85
21st Kanto Shineisen Tournament
Date	2004-09-12		Rating	2230.83
Round	Color	Result	Opponent
1	White	Win	Shibata Satoru	1709.71
2	Black	Loss	Sato Kiyotomi	2366.18
3	Black	Win	Sato Takuma	2169.68
4	White	Draw	Tashiro Yuichi	2288.35
5	Black	Win	Hara Masao	2070.81
7th Mikami Cup - A class
Date	2004-01-25		Rating	2195.22
Round	Color	Result	Opponent
4	Black	Win	Kawabe Tatsuya	1879.76
5	Black	Win	Itami Yoshiyuki	2149.20
20th Kanto Shineisen Tournament
Date	2003-09-21		Rating	2167.76
Round	Color	Result	Opponent
1	White	Loss	Kato Yasuhiro	2047.27
2	White	Win	Maruta Hiroki	1935.10
3	White	Loss	Sato Takuma	2137.57
4	White	Win	Sasaki Miyu	1937.93
5	White	Loss	Itami Yoshiyuki	2152.22