Koyama Jun (小山純)

Place: Tokyo, Japan

Rating: 2585.07, Std: 200.04, Rank: 68

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

Top rating: 2643.86 (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	2585.07
Round	Color	Result	Opponent
1	White	Win	Tomobe Katsuhiro	2137.49
2	White	Win	Maruta Hiroki	2210.46
3	Black	Draw	Fujita Maiko	2422.01
4	Black	Draw	Yokoyama Shota	2459.15
57 Meijinsen Tournament
Date	2019-09-16		Rating	2608.79
Round	Color	Result	Opponent
1	Black	Draw	Inoue Fumiya	2420.30
2	White	Loss	Kamiya Shunsuke	2824.69
3	Black	Loss	Kawamura Norihiko	2669.71
4	White	Win	Matsuura Hiroshi	2363.51
5	Black	Loss	Nakayama Tomoharu	2826.88
6	White	Loss	Kawano Takahisa	2462.46
7	White	Loss	Hasegawa Kazuto	2614.29
8	White	Win	Okabe Hiroshi	2726.65
9	Black	Win	Ishitani Shin-ichi	2385.30
World Championship 2019, AT
Date	2019-08-10		Rating	2614.71
Round	Color	Result	Opponent
1	Black	Draw	Mei Fan	2706.14
2	Black	Win	Oll Aivo	2743.52
3	Black	Win	Inoue Fumiya	2424.34
4	Black	Win	Epifanov Dmitry	2672.55
5	Black	Loss	Nakayama Tomoharu	2821.28
6	Black	Win	Okabe Hiroshi	2721.91
7	Black	Draw	Kamiya Shunsuke	2821.71
8	Black	Draw	Gardström Petter	2700.43
9	White	Loss	Fedotov Denis	2681.80
10	White	Loss	Cao Dong	2783.01
11	Black	Loss	Sushkov Vladimir	2840.13
World Championship 2019, QT
Date	2019-08-02		Rating	2614.61
Round	Color	Result	Opponent
1	White	Win	Sandstrom Richard	2373.28
2	White	Win	Li Xiaoqing	2659.24
3	Black	Loss	Mesila Villem	2665.70
4	Black	Win	Wai Chan Keong	2786.41
5	Black	Draw	Fedotov Denis	2684.45
6	White	Loss	Gardström Petter	2702.10
7	White	Win	Topkin Georg-Romet	2626.99
57 Meijinsen Qualification East Japan area 2nd round
Date	2019-06-23		Rating	2608.33
Round	Color	Result	Opponent
1	Black	Win	Maruta Hiroki	2188.94
2	Black	Win	Maruta Koji	2144.85
3	White	Win	Inoue Fumiya	2427.78
4	Black	Win	Kusajima Masato	2260.41
5	White	Win	Ono Takayuki	2401.26
14th All Japan Championship
Date	2019-03-31		Rating	2588.03
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2290.78
2	Black	Win	Chigira Makoto	2092.72
3	White	Draw	Inoue Fumiya	2428.41
4	White	Win	Ono Takayuki	2399.65
5	Black	Loss	Nakamura Shigeru	2996.23
6	Black	Loss	Okabe Hiroshi	2701.09
19 Renju Emperor Tournament Kanto area 1st round
Date	2018-10-21		Rating	2570.32
Round	Color	Result	Opponent
1	Black	Win	Demachi Koichiro	1926.71
2	White	Loss	Iwano Fumio	2250.58
3	White	Draw	Ishitani Shin-ichi	2427.50
4	White	Loss	Inoue Fumiya	2406.96
56 Meijinsen Tournament
Date	2018-09-17		Rating	2573.20
Round	Color	Result	Opponent
1	Black	Win	Kuga Akio	2429.22
2	Black	Loss	Matsuura Hiroshi	2355.31
3	White	Win	Okabe Hiroshi	2702.74
5	Black	Win	Kawamura Norihiko	2659.08
6	Black	Loss	Ishitani Shin-ichi	2430.22
7	Black	Loss	Kamiya Shunsuke	2800.11
8	White	Loss	Nakamura Shigeru	3000.83
9	White	Win	Hasegawa Kazuto	2579.53
35 Kanto Championship
Date	2018-07-16		Rating	2576.10
Round	Color	Result	Opponent
4	Black	Loss	Sato Kiyotomi	2443.99
5	White	Win	Iwano Fumio	2251.35
6	White	Win	Fujikawa Masaki	2104.26
56 Meijinsen Qualification East Japan area 2nd round
Date	2018-06-25		Rating	2578.20
Round	Color	Result	Opponent
1	White	Win	Kusajima Masato	2308.41
2	Black	Win	Sato Kiyotomi	2444.63
3	White	Loss	Ono Takayuki	2392.87
56 Meijinsen Qualification Kanto area 1st round
Date	2018-05-13		Rating	2583.71
Round	Color	Result	Opponent
1	Black	Loss	Mitsumori Masao	2333.99
2	Black	Win	Iwano Fumio	2260.63
3	Black	Win	Maruta Hiroki	2156.79
4	White	Win	Sato Kiyotomi	2443.92
Team World Championship 2018
Date	2018-05-05		Rating	2584.99
Round	Color	Result	Opponent
1	Black	Win	Lillemaa Argo	2196.87
2	Black	Win	Purk Andry	2635.55
4	White	Win	Kachaev Denis	2542.58
5	Black	Win	Nikonov Konstantin	2692.46
6	Black	Win	Liu Yang	2637.19
7	White	Win	Lavrik-Karmazin Maksim	2499.23
8	White	Draw	Artemyev Sergey	2577.70
9	Black	Loss	Liu Yang	2637.19
10	White	Loss	Purk Andry	2635.55
13th All Japan Championship
Date	2018-01-28		Rating	2580.58
Round	Color	Result	Opponent
1	White	Loss	Ono Takayuki	2385.79
2	White	Loss	Ishitani Shin-ichi	2419.37
3	White	Loss	Miyamoto Syunju	2268.98
5	White	Win	Sato Kiyotomi	2435.26
6	Black	Win	Maruta Hiroki	2149.05
18 Kanto Renju Emperor Tournament 2nd round
Date	2017-12-17		Rating	2587.77
Round	Color	Result	Opponent
1	Black	Draw	Sato Kiyotomi	2438.14
2	Black	Win	Miyamoto Syunju	2274.73
3	Black	Loss	Nakamura Shigeru	2961.47
4	Black	Loss	Okabe Hiroshi	2721.17
5	White	Win	Kusajima Masato	2304.42
18 Kanto Renju Emperor Tournament 1st round
Date	2017-11-01		Rating	2597.27
Round	Color	Result	Opponent
1	Black	Win	Koyama Akihiro	1966.30
2	White	Draw	Okabe Hiroshi	2722.68
3	Black	Win	Ono Takayuki	2380.66
4	White	Win	Kusajima Masato	2300.54
World Championship 2017, BT
Date	2017-08-12		Rating	2608.81
Round	Color	Result	Opponent
1	Black	Win	Rahumägi Brenet	2330.01
2	Black	Win	Sun In	2435.85
3	Black	Draw	Liu Yang	2672.38
4	Black	Win	Lan Zhiren	2638.98
5	Black	Win	Yang Yu-Hsiung	2436.10
6	Black	Loss	Tang Kai Lam	2772.48
7	Black	Win	Topkin Georg-Romet	2524.83
8	White	Win	Huang Yen-Hua	2462.97
9	Black	Loss	Okabe Hiroshi	2722.09
World Championship 2017, QT
Date	2017-08-05		Rating	2608.72
Round	Color	Result	Opponent
1	White	Win	Rahumägi Brenet	2329.86
2	White	Win	Sushkov Vladimir	2875.57
3	Black	Loss	Lan Zhiren	2638.10
4	Black	Loss	Mei Fan	2697.78
5	White	Draw	Okabe Hiroshi	2722.18
6	Black	Win	Kim Su Chan	2309.15
7	Black	Win	Lu Wei-Yuan	2604.87
55 Meijinsen Qualification East Japan area 2nd round
Date	2017-06-11		Rating	2602.13
Round	Color	Result	Opponent
1	Black	Win	Tomobe Katsuhiro	2164.39
2	White	Loss	Tamada Yoichi	2540.31
3	White	Loss	Ono Takayuki	2378.19
4	Black	Win	Miyamoto Syunju	2271.63
5	Black	Loss	Sato Kiyotomi	2472.52
12th All Japan Championship
Date	2017-03-26		Rating	2608.69
Round	Color	Result	Opponent
1	Black	Win	Kusajima Masato	2289.25
2	Black	Loss	Nakamura Shigeru	2967.76
3	Black	Win	Ishitani Shin-ichi	2395.89
4	Black	Win	Nakayama Tomoharu	2795.83
5	Black	Loss	Kamiya Shunsuke	2790.47
6	White	Loss	Tachi Masaya	2532.19
20 New Year (Mikami) Cup
Date	2017-01-22		Rating	2613.15
Round	Color	Result	Opponent
S2	Black	Win	Sato Kiyotomi	2493.66
S3	Black	Loss	Nakamura Shigeru	2966.02
S4	Black	Win	Ishitani Shin-ichi	2395.78
S5	Black	Loss	Okabe Hiroshi	2721.18
17 Kanto Renju Emperor Tournament 1st round
Date	2016-11-23		Rating	2616.79
Round	Color	Result	Opponent
1	Black	Win	Demachi Koichiro	1934.70
2	Black	Loss	Okabe Hiroshi	2715.56
3	Black	Win	Iwano Fumio	2271.96
4	White	Win	Ishitani Shin-ichi	2402.27
54 Meijinsen Tournament
Date	2016-09-19		Rating	2620.70
Round	Color	Result	Opponent
1	White	Win	Matsuura Hiroshi	2363.48
2	Black	Loss	Kamiya Shunsuke	2762.00
3	White	Draw	Hasegawa Kazuto	2641.50
4	White	Draw	Iio Yoshihiro	2563.11
5	Black	Win	Tanaka Toshiki	2446.72
6	Black	Draw	Nakayama Tomoharu	2779.57
7	Black	Draw	Maruyama Yasushi	2293.09
8	Black	Win	Kuga Akio	2371.35
9	White	Loss	Okabe Hiroshi	2720.02
33 Kanto Championship
Date	2016-07-31		Rating	2624.98
Round	Color	Result	Opponent
1	White	Win	Kato Yasuhiro	2046.81
2	Black	Loss	Nakamura Shigeru	2956.95
3	Black	Loss	Okabe Hiroshi	2724.13
4	Black	Win	Nakamura Souta	2277.12
5	Black	Draw	Nakayama Tomoharu	2778.43
6	Black	Draw	Ishitani Shin-ichi	2389.10
54 Meijinsen Qualification East Japan area 2nd round
Date	2016-06-12		Rating	2631.48
Round	Color	Result	Opponent
1	White	Win	Kusajima Masato	2269.25
2	Black	Win	Kamiya Shunsuke	2729.17
3	White	Win	Tamada Yoichi	2570.96
4	Black	Draw	Mitsumori Masao	2355.87
5	White	Draw	Okabe Hiroshi	2726.36
19 Mikami Cup
Date	2016-03-13		Rating	2633.81
Round	Color	Result	Opponent
S1	White	Win	Ishitani Shin-ichi	2393.61
S2	Black	Loss	Nakamura Shigeru	2942.77
S3	White	Win	Kusajima Masato	2266.20
S4	Black	Loss	Okabe Hiroshi	2722.05
16th Kanto Renju Emperor Tournament Final
Date	2016-02-14		Rating	2635.18
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2781.63
2	White	Loss	Nakayama Tomoharu	2781.63
11th All Japan Championship
Date	2016-01-11		Rating	2639.12
Round	Color	Result	Opponent
1	White	Win	Maruta Hiroki	2124.56
2	Black	Win	Nakamura Souta	2304.55
3	Black	Win	Okabe Hiroshi	2716.89
4	Black	Loss	Nakayama Tomoharu	2780.00
5	White	Loss	Sato Kiyotomi	2539.26
6	White	Draw	Tamada Yoichi	2574.56
16 Kanto Renju Emperor Tournament 2nd round
Date	2015-12-13		Rating	2643.30
Round	Color	Result	Opponent
1	White	Win	Sato Kiyotomi	2538.82
2	White	Win	Ono Takayuki	2327.29
3	Black	Loss	Okabe Hiroshi	2716.52
4	Black	Draw	Nakayama Tomoharu	2778.15
5	White	Win	Nakamura Shigeru	2925.74
16 Kanto Renju Emperor Tournament 1st round
Date	2015-11-15		Rating	2643.86
Round	Color	Result	Opponent
1	Black	Win	Ishitani Shin-ichi	2395.69
2	Black	Win	Sato Kiyotomi	2535.87
3	Black	Win	Okabe Hiroshi	2717.36
4	Black	Win	Ono Takayuki	2328.11
53 Meijinsen Tournament
Date	2015-09-22		Rating	2637.21
Round	Color	Result	Opponent
1	Black	Loss	Hasegawa Kazuto	2674.55
2	Black	Win	Oosumi Yuuki	2774.97
3	White	Win	Ishitani Shin-ichi	2393.80
4	Black	Draw	Nakayama Tomoharu	2771.10
5	White	Loss	Kawamura Norihiko	2624.93
6	White	Loss	Tamada Yoichi	2584.76
7	Black	Draw	Iio Yoshihiro	2533.49
8	White	Win	Matsuura Hiroshi	2400.86
9	Black	Draw	Okabe Hiroshi	2719.54
World Championship 2015, BT
Date	2015-08-12		Rating	2633.50
Round	Color	Result	Opponent
1	White	Win	Huang Xiuyi	2191.02
2	Black	Loss	Miyagawa Junzo	2248.23
3	Black	Win	Topkin Georg-Romet	2337.97
4	Black	Win	Wang Chih-Kung	2341.24
5	Black	Loss	Sirategyan Karen	2441.72
6	Black	Win	Ishitani Shin-ichi	2396.32
7	Black	Win	Lavrik-Karmazin Maksim	2292.61
8	White	Win	Mano Yoshihisa	2365.51
9	White	Draw	Nakayama Tomoharu	2767.21
World Championship 2015, QT
Date	2015-08-05		Rating	2633.32
Round	Color	Result	Opponent
1	Black	Win	Topkin Georg-Romet	2336.52
2	Black	Win	Nakayama Tomoharu	2765.80
3	Black	Loss	Kamiya Shunsuke	2707.11
4	White	Draw	Wang Qingqing	2628.23
5	Black	Win	Huang Yen-Hua	2477.09
6	Black	Loss	Epifanov Dmitry	2709.33
7	Black	Win	Lin Liu-Min	2569.97
Kanto Championship
Date	2015-07-20		Rating	2631.60
Round	Color	Result	Opponent
1	White	Win	Maruta Hiroki	2106.48
2	Black	Win	Nakamura Shigeru	2907.49
3	Black	Draw	Okabe Hiroshi	2728.38
4	White	Win	Iwano Fumio	2253.42
5	Black	Loss	Nakayama Tomoharu	2765.00
6	Black	Win	Zhao Jiadong	2138.46
53 Meijinsen Qualification East Japan area 2nd round
Date	2015-06-14		Rating	2624.31
Round	Color	Result	Opponent
1	White	Loss	Tamada Yoichi	2592.48
2	Black	Win	Sato Kiyotomi	2508.02
3	White	Win	Ono Takayuki	2326.36
5	Black	Draw	Kamiya Shunsuke	2693.88
6	White	Win	Nakamura Souta	2296.03
53 Meijinsen Qualification East Japan area 1st round
Date	2015-05-10		Rating	2616.54
Round	Color	Result	Opponent
1	Black	Win	Mitsumori Masao	2327.69
2	Black	Win	Iwano Fumio	2247.79
3	Black	Win	Nakamura Souta	2294.23
4	White	Loss	Kamiya Shunsuke	2688.04
10th All Japan Championship
Date	2015-03-29		Rating	2607.20
Round	Color	Result	Opponent
1	White	Win	Fujikawa Masaki	2095.18
2	White	Loss	Kamiya Shunsuke	2677.09
3	Black	Win	Kato Yasuhiro	2064.56
4	Black	Win	Mitsumori Masao	2326.13
5	Black	Loss	Ishitani Shin-ichi	2426.08
6	Black	Win	Tanizaki Ryusuke	2203.95
12 Kanto Renju Emperor Tournament 1st round
Date	2011-10-23		Rating	2438.98
Round	Color	Result	Opponent
1	Black	Loss	Oosumi Yuuki	2771.84
2	White	Win	Suzuki Rin	1991.77
3	White	Loss	Isobe Taizan	2422.35
4	White	Loss	Fukui Nobuhiro	2473.52
49 Meijinsen Qualification East-Japan area 1st round
Date	2011-06-12		Rating	2436.37
Round	Color	Result	Opponent
1	Black	Loss	Isobe Taizan	2409.39
2	Black	Win	Kudomi Takahiro	2413.93
3	Black	Loss	Nakayama Tomoharu	2554.63
4	Black	Win	Ono Takayuki	2397.09
ex	Black	Loss	Nakayama Tomoharu	2554.63
28th Kanto Shineisen Tournament
Date	2011-04-17		Rating	2437.14
Round	Color	Result	Opponent
1	White	Win	Kon Akira	2008.11
2	Black	Win	Kamiya Shunsuke	2412.61
3	White	Win	Ozawa Tetsushi	2093.15
4	White	Loss	Nakayama Tomoharu	2543.16
5	Black	Win	Tomobe Katsuhiro	2230.25
5	White	Loss	Kamiya Shunsuke	2412.61
14th Mikami Cup Tournament
Date	2011-01-30		Rating	2438.11
Round	Color	Result	Opponent
A1	Black	Win	Kon Akira	2000.69
A2	White	Loss	Iwano Fumio	2132.39
A3	Black	Win	Matsuoka Teruo	1989.90
A4	Black	Win	Kise Katsumi	2521.65
A5	Black	Win	Isobe Seiji	2024.52
8th Middle-dan Players Tournament
Date	2009-08-30		Rating	2444.94
Round	Color	Result	Opponent
1	White	Win	Yamamoto Yasuhiro	2148.32
2	White	Win	Gakumazawa Hideaki	2139.30
3	Black	Loss	Sato Kiyotomi	2434.54
4	White	Win	Miyagawa Junzo	2202.63
5	White	Draw	Maruyama Yasushi	2262.65
6	Black	Win	Ono Takayuki	2403.36
46th Meijinsen Qualification East-Japan area 2nd round
Date	2008-07-13		Rating	2441.95
Round	Color	Result	Opponent
	White	Loss	Kawamura Norihiko	2656.75
	White	Loss	Sato Kiyotomi	2434.55
	White	Win	Arita Nobuyoshi	2392.95
	White	Loss	Isobe Taizan	2414.86
	Black	Win	Nagao Noriaki	2261.28
46th Meijinsen Qualification East-Japan area 1st round
Date	2008-06-15		Rating	2443.56
Round	Color	Result	Opponent
1	Black	Win	Sato Kiyotomi	2429.11
2	White	Win	Tanno Yoshitaka	2122.06
3	Black	Win	Ono Takayuki	2399.35
4	Black	Win	Kudomi Takahiro	2339.25
25th Kanto Shineisen Tournament
Date	2008-04-13		Rating	2437.35
Round	Color	Result	Opponent
1	White	Win	Fujikawa Masaki	2104.06
2	Black	Win	Watanabe Tatsuya	2156.43
3	White	Win	Tomobe Katsuhiro	2064.58
4	Black	Win	Iwano Fumio	2189.37
5	Black	Draw	Ono Takayuki	2395.62
2nd All Japan Championship (WC Qualification)
Date	2007-03-25		Rating	2376.62
Round	Color	Result	Opponent
1	White	Win	Kuramoto Hideharu	1888.43
2	Black	Loss	Yamaguchi Yusui	2649.30
3	Black	Loss	Iio Yoshihiro	2522.32
4	White	Win	Maruta Hiroki	2024.75
5	White	Win	Tanno Yoshitaka	2129.48
6	Black	Win	Ono Takayuki	2342.83
10th Mikami Cup Tournament, A-class
Date	2007-01-28		Rating	2365.64
Round	Color	Result	Opponent
1	Black	Win	Matsuoka Teruo	1875.14
2	White	Loss	Iwano Fumio	2143.63
3	Black	Win	Maruta Hiroki	2021.51
4	White	Win	Tomobe Katsuhiro	2055.89
5	Black	Win	Kobayashi Koichi	2098.94
23rd Kanto Shinei Tournament
Date	2006-09-10		Rating	2342.60
Round	Color	Result	Opponent
1	White	Win	Maruta Hiroki	2003.38
1	Black	Win	Teshima Masakatsu	1952.53
2	Black	Loss	Tanizaki Ryusuke	2127.05
3	Black	Win	Matsuoka Teruo	1854.05
4	White	Win	Iwano Fumio	2110.80
5	White	Loss	Watanabe Tatsuya	2135.47
Meijin-sen Qual, East Japan area 1st round
Date	2006-06-18		Rating	2338.65
Round	Color	Result	Opponent
1	Black	Win	Maruta Koji	2112.80
2	White	Win	Mitsumori Masao	2253.22
3	Black	Win	Kudomi Takahiro	2284.33
4	Black	Loss	Kamemoto Daichi	2206.97
23rd Kanto Championship
Date	2006-05-21		Rating	2336.29
Round	Color	Result	Opponent
1	White	Loss	Kawamura Norihiko	2664.15
2	White	Win	Tanizaki Ryusuke	2113.87
3	Black	Win	Kudomi Takahiro	2282.74
4	White	Win	Isobe Taizan	2411.17
5	White	Loss	Nakamura Shigeru	2847.04
46th Suisei-sen tournament final round
Date	2006-04-16		Rating	2329.20
Round	Color	Result	Opponent
	White	Win	Itami Yoshiyuki	2157.94
	White	Win	Nagao Noriaki	2221.64
	White	Loss	Kato Yasuhiro	2051.75
	White	Win	Hara Masao	2077.95
	Black	Loss	Ono Takayuki	2304.81
1st All Japan Championship
Date	2006-03-26		Rating	2326.23
Round	Color	Result	Opponent
1	Black	Win	Tadokoro Hosai	1930.77
2	Black	Loss	Isobe Taizan	2425.41
3	Black	Loss	Tanizaki Ryusuke	2112.79
4	White	Win	Itami Yoshiyuki	2160.84
5	Black	Win	Sato Kiyotomi	2410.58
6	White	Win	Miyoshi Takeo	2274.89
46th Suisei-sen Tournament - 1st round
Date	2006-03-12		Rating	2323.82
Round	Color	Result	Opponent
1	Black	Win	Fujikawa Masaki	2029.78
2	White	Win	Tadokoro Hosai	1930.24
3	White	Loss	Nagao Noriaki	2223.62
4	White	Win	Tomobe Katsuhiro	2091.10
9th Mikami Cup - A Class
Date	2006-01-29		Rating	2317.43
Round	Color	Result	Opponent
1	Black	Win	Iwano Fumio	2074.24
2	White	Win	Teshima Masakatsu	1957.56
3	White	Loss	Ono Takayuki	2303.96
4	White	Win	Nakata Shinsuke	1976.25
5	Black	Win	Watanabe Tatsuya	2133.84
37th Kyoto Classified - group 1
Date	2005-11-13		Rating	2304.26
Round	Color	Result	Opponent
1	Black	Win	Ozawa Tetsushi	2015.61
2	White	Win	Itami Yoshiyuki	2179.83
3	White	Loss	Oosumi Yuuki	2404.68
4	White	Win	Hayashi Koji	2005.71
5	Black	Win	Ono Takayuki	2296.27
6	White	Loss	Shinoda Kiyoshi	2346.67
6th Kanto Renju Emperor Tournament - Semifinal
Date	2005-10-23		Rating	2299.89
Round	Color	Result	Opponent
	White	Loss	Yamaguchi Yusui	2595.77
	White	Loss	Okabe Hiroshi	2591.67
	White	Loss	Isobe Taizan	2457.84
	White	Loss	Kamemoto Daichi	2180.78
	White	Win	Sato Kiyotomi	2394.72
6th Kanto Renju Emperor Tournament - 1st round
Date	2005-10-22		Rating	2299.76
Round	Color	Result	Opponent
1	White	Win	Koyama Masayuki	1729.46
2	White	Loss	Sato Kiyotomi	2394.76
3	White	Win	Teshima Masakatsu	1957.97
4	Black	Win	Nakata Shinsuke	1968.05
22nd Kanto Shineisen Tournament
Date	2005-09-11		Rating	2294.47
Round	Color	Result	Opponent
1	Black	Win	Teshima Masakatsu	1957.98
2	White	Win	Tadokoro Hosai	1926.99
3	Black	Win	Tomobe Katsuhiro	2075.36
4	Black	Loss	Arita Nobuyoshi	2342.93
5	Black	Win	Kamemoto Daichi	2169.89
43rd Meijinsen Qualification: East Japan 1st round
Date	2005-06-12		Rating	2279.17
Round	Color	Result	Opponent
1	Black	Win	Maruta Koji	2152.17
2	Black	Loss	Kudomi Takahiro	2299.59
3	White	Loss	Arita Nobuyoshi	2324.97
4	White	Win	Ohno Syunzo	2074.67
22nd Kanto Championship
Date	2005-05-22		Rating	2276.45
Round	Color	Result	Opponent
1	White	Win	Mitsumori Masao	2266.68
2	White	Loss	Yamaguchi Yusui	2562.35
3	White	Win	Kudomi Takahiro	2300.09
4	Black	Loss	Maruta Koji	2156.82
5	White	Loss	Sato Kiyotomi	2394.36
45th Suisei-sen Tournament
Date	2005-03-20		Rating	2269.28
Round	Color	Result	Opponent
1	White	Win	Muramatsu Yasuhiro	1691.55
2	White	Win	Arita Nobuyoshi	2298.71
3	White	Win	Sano Hiroyuki	2135.79
4	Black	Win	Kobayashi Koichi	2093.62
8th Mikami Cup - A Class
Date	2005-01-23		Rating	2255.69
Round	Color	Result	Opponent
1	Black	Draw	Arita Nobuyoshi	2286.32
2	Black	Win	Nagumo Natsuhiko	2055.92
3	Black	Win	Kato Yasuhiro	2024.25
4	White	Loss	Nagao Noriaki	2244.04
5	Black	Win	Sato Kiyotomi	2370.55
5th Kanto Renju Emperor Tournament - 1st round
Date	2004-11-28		Rating	2238.14
Round	Color	Result	Opponent
1	White	Loss	Mitsumori Masao	2248.28
2	Black	Loss	Tomobe Katsuhiro	2031.03
3	Black	Win	Mao Richu	1771.86
4	Black	Loss	Iwano Fumio	2040.69
21st Kanto Shineisen Tournament
Date	2004-09-12		Rating	2230.66
Round	Color	Result	Opponent
1	White	Win	Shibata Satoru	1710.20
2	Black	Loss	Sato Kiyotomi	2365.97
3	Black	Win	Sato Takuma	2169.48
4	White	Draw	Tashiro Yuichi	2288.15
5	Black	Win	Hara Masao	2070.62
7th Mikami Cup - A class
Date	2004-01-25		Rating	2195.05
Round	Color	Result	Opponent
4	Black	Win	Kawabe Tatsuya	1879.63
5	Black	Win	Itami Yoshiyuki	2149.00
20th Kanto Shineisen Tournament
Date	2003-09-21		Rating	2167.59
Round	Color	Result	Opponent
1	White	Loss	Kato Yasuhiro	2047.08
2	White	Win	Maruta Hiroki	1934.98
3	White	Loss	Sato Takuma	2137.36
4	White	Win	Sasaki Miyu	1937.79
5	White	Loss	Itami Yoshiyuki	2152.02