Mitsumori Masao (三森政男)

Place: Hasuta, Japan

Rating: 2250.73, Rank: 244

First game: 1991-08-10, Last game: 2019-05-12

Top rating: 2327.75 (1995-08-07)

Games: 227, Wins: 101, Draws: 14, Losses: 112

Gy1: 0, Gy2: 0, Gy5: 12

57 Meijinsen Qualification Kanto area 1st round
Date	2019-05-12		Rating	2250.73
Round	Color	Result	Opponent
1	White	Loss	Maruta Hiroki	2113.33
2	White	Loss	Inoue Fumiya	2347.32
3	White	Win	Iwano Fumio	2140.03
4	White	Win	Maruta Koji	2059.47
56 Meijinsen Qualification Kanto area 1st round
Date	2018-05-13		Rating	2263.10
Round	Color	Result	Opponent
1	White	Win	Koyama Jun	2511.68
2	White	Loss	Sato Kiyotomi	2375.89
3	Black	Win	Iwano Fumio	2186.89
4	Black	Loss	Ono Takayuki	2312.42
55 Meijinsen Qualification Kanto area 1st round
Date	2017-05-21		Rating	2263.94
Round	Color	Result	Opponent
1	Black	Draw	Chigira Makoto	2001.85
2	White	Win	Iwano Fumio	2200.14
3	White	Loss	Ono Takayuki	2304.94
4	White	Loss	Sato Kiyotomi	2404.44
54 Meijinsen Qualification East Japan area 2nd round
Date	2016-06-12		Rating	2281.54
Round	Color	Result	Opponent
1	Black	Loss	Tamada Yoichi	2491.95
2	White	Loss	Okabe Hiroshi	2648.61
3	White	Loss	Kamiya Shunsuke	2652.62
4	White	Draw	Koyama Jun	2551.50
5	White	Win	Kusajima Masato	2204.16
54 Meijinsen Qualification Kanto area 1st round
Date	2016-05-22		Rating	2282.20
Round	Color	Result	Opponent
1	White	Win	Chigira Makoto	1990.44
2	White	Win	Kamiya Shunsuke	2650.67
3	White	Loss	Sato Kiyotomi	2439.79
4	White	Win	Maruta Koji	2111.85
53 Meijinsen Qualification East Japan area 1st round
Date	2015-05-10		Rating	2264.90
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2541.29
2	White	Loss	Nakamura Souta	2222.05
3	Black	Win	Chigira Makoto	1966.02
4	Black	Win	Fujikawa Masaki	2051.77
10th All Japan Championship
Date	2015-03-29		Rating	2264.08
Round	Color	Result	Opponent
1	White	Win	Fujita Yudai	2320.44
2	White	Loss	Tamada Yoichi	2504.63
3	White	Win	Kubo Izumi	2027.96
4	White	Loss	Koyama Jun	2534.40
5	White	Loss	Tanizaki Ryusuke	2147.30
6	White	Loss	Miyagawa Junzo	2175.21
1st Senior Masters Championship
Date	2014-08-29		Rating	2273.74
Round	Color	Result	Opponent
1	White	Win	Miyagawa Junzo	2157.20
2	Black	Loss	Ishitani Shin-ichi	2377.52
3	Black	Win	Miura Hitoshi	1762.15
4	White	Win	Kubo Izumi	2030.47
5	White	Loss	Isobe Taizan	2361.05
6	White	Win	Kobayashi Koichi	2192.53
7	White	Win	Kato Yasuhiro	2034.49
52 Meijinsen Qualification East Japan area 1st round
Date	2014-06-08		Rating	2274.80
Round	Color	Result	Opponent
1	White	Loss	Tamada Yoichi	2483.21
2	White	Loss	Kawamura Norihiko	2579.24
3	White	Win	Iwano Fumio	2194.99
4	White	Win	Kudomi Takahiro	2263.92
Team World Championship
Date	2014-05-03		Rating	2273.95
Round	Color	Result	Opponent
5	White	Loss	Artemyev Sergey	2521.20
6	White	Loss	Oosumi Yuuki	2746.39
51 Meijinsen Qualification East-Japan area 2nd round
Date	2013-07-21		Rating	2272.64
Round	Color	Result	Opponent
1	White	Loss	Kudomi Takahiro	2320.25
2	Black	Win	Tomobe Katsuhiro	2098.19
3	White	Win	Kato Yasuhiro	2069.96
4	White	Loss	Sato Kiyotomi	2394.01
5	White	Loss	Kamiya Shunsuke	2486.21
51 Meijinsen Qualification East-Japan area 1st round
Date	2013-06-16		Rating	2273.74
Round	Color	Result	Opponent
1	White	Loss	Kato Yasuhiro	2075.95
2	White	Win	Kobayashi Koichi	2160.40
3	White	Loss	Kamiya Shunsuke	2480.91
4	White	Win	Ono Takayuki	2322.87
29th Kanto Championship
Date	2013-05-12		Rating	2275.05
Round	Color	Result	Opponent
1	White	Draw	Tada Ayako	2234.38
2	White	Draw	Isobe Taizan	2336.38
3	Black	Loss	Nakamura Shigeru	2795.38
4	White	Win	Tomobe Katsuhiro	2103.53
5	White	Loss	Kato Yasuhiro	2078.34
8th All Japan Championship
Date	2013-03-24		Rating	2278.71
Round	Color	Result	Opponent
1	White	Loss	Nakamura Shigeru	2796.47
2	White	Win	Kubo Izumi	2029.90
3	White	Win	Kato Yasuhiro	2075.57
4	White	Loss	Isobe Taizan	2342.09
5	White	Win	Kudomi Takahiro	2343.98
6	White	Loss	Kamiya Shunsuke	2468.40
16th Mikami Cup Tournament
Date	2013-01-20		Rating	2281.95
Round	Color	Result	Opponent
S1	White	Loss	Okabe Hiroshi	2648.87
S2	White	Loss	Fukui Nobuhiro	2491.26
S3	White	Win	Kobayashi Koichi	2157.23
S4	White	Win	Ishitani Shin-ichi	2309.92
S5	Black	Loss	Kudomi Takahiro	2346.53
13 Kanto Renju Emperor Tournament 1st round
Date	2012-10-21		Rating	2285.82
Round	Color	Result	Opponent
1	White	Win	Kato Yasuhiro	2052.09
2	White	Loss	Maruta Koji	2088.59
3	White	Loss	Ono Takayuki	2354.19
4	White	Win	Maruta Hiroki	2064.12
50 Meijinsen Qualification East-Japan area 1st round
Date	2012-06-03		Rating	2299.41
Round	Color	Result	Opponent
1	Black	Win	Maruta Koji	2075.11
2	White	Win	Sato Kiyotomi	2337.10
3	Black	Loss	Nakamura Shigeru	2805.25
4	White	Loss	Kudomi Takahiro	2352.51
29th Kanto Championship
Date	2012-05-13		Rating	2300.99
Round	Color	Result	Opponent
1	Black	Win	Kato Yasuhiro	2025.78
2	White	Loss	Kudomi Takahiro	2352.51
3	White	Win	Nakayama Tomoharu	2546.09
4	White	Loss	Nakamura Shigeru	2804.95
5	White	Win	Iwano Fumio	2089.93
15th Mikami Cup Tournament
Date	2012-03-11		Rating	2302.35
Round	Color	Result	Opponent
S2	White	Loss	Oosumi Yuuki	2715.68
S3	White	Win	Tadokoro Hosai	1843.57
S4	White	Loss	Nakamura Shigeru	2799.78
S5	Black	Loss	Ishitani Shin-ichi	2313.35
7th All Japan Championship
Date	2012-01-29		Rating	2304.99
Round	Color	Result	Opponent
1	Black	Win	Suzuki Rin	1944.38
2	White	Loss	Iio Yoshihiro	2414.94
3	White	Win	Kobayashi Koichi	2149.79
4	White	Win	Ishitani Shin-ichi	2317.53
5	White	Loss	Oosumi Yuuki	2712.36
6	White	Win	Tamada Yoichi	2422.37
12 Kanto Renju Emperor Tournament 2nd round
Date	2012-01-15		Rating	2304.68
Round	Color	Result	Opponent
1	White	Win	Nakayama Tomoharu	2529.48
2	White	Loss	Okabe Hiroshi	2628.71
3	White	Loss	Nakamura Shigeru	2796.25
4	White	Loss	Oosumi Yuuki	2710.86
5	White	Loss	Kamiya Shunsuke	2408.73
12 Kanto Renju Emperor Tournament 1st round
Date	2011-10-23		Rating	2301.86
Round	Color	Result	Opponent
1	White	Win	Kobayashi Koichi	2133.48
2	White	Loss	Kamiya Shunsuke	2397.77
3	White	Win	Ono Takayuki	2342.81
4	White	Win	Kudomi Takahiro	2344.51
49 Meijinsen Qualification East-Japan area 1st round
Date	2011-06-12		Rating	2287.22
Round	Color	Result	Opponent
1	White	Loss	Nagao Noriaki	2371.44
2	White	Loss	Ono Takayuki	2336.32
3	White	Loss	Kudomi Takahiro	2335.74
4	White	Win	Maruta Hiroki	2057.23
28th Kanto Championship
Date	2011-05-22		Rating	2286.52
Round	Color	Result	Opponent
1	White	Loss	Fujikawa Masaki	2028.32
2	Black	Win	Maruta Hiroki	2059.01
3	White	Loss	Tomobe Katsuhiro	2165.12
4	White	Win	Ono Takayuki	2335.96
5	White	Win	Nakayama Tomoharu	2484.73
14th Mikami Cup Tournament
Date	2011-01-30		Rating	2282.31
Round	Color	Result	Opponent
S1	White	Win	Gakumazawa Hideaki	2037.39
S2	White	Loss	Oosumi Yuuki	2659.90
S3	White	Loss	Ono Takayuki	2335.06
S5	Black	Loss	Nakamura Shigeru	2773.60
11 Kanto Renju Emperor Tournament 2nd round
Date	2010-11-21		Rating	2281.69
Round	Color	Result	Opponent
5	White	Win	Fukui Nobuhiro	2292.57
11 Kanto Renju Emperor Tournament 1st round
Date	2010-10-31		Rating	2280.70
Round	Color	Result	Opponent
1	White	Win	Iwano Fumio	2079.82
2	White	Win	Nagao Noriaki	2359.97
3	White	Loss	Okabe Hiroshi	2613.43
4	White	Win	Ono Takayuki	2331.83
Meijinsen Qualification East-Japan area 1st round
Date	2010-06-27		Rating	2262.63
Round	Color	Result	Opponent
1	Black	Win	Kato Yasuhiro	2028.73
2	White	Win	Fukui Nobuhiro	2261.77
3	White	Draw	Isobe Taizan	2337.55
4	White	Loss	Ono Takayuki	2330.32
27th Kanto Championship
Date	2010-05-23		Rating	2256.55
Round	Color	Result	Opponent
1	White	Loss	Tomobe Katsuhiro	2151.85
2	Black	Win	Maruta Hiroki	2039.72
3	White	Loss	Ono Takayuki	2328.80
4	White	Loss	Nagao Noriaki	2349.82
5	Black	Loss	Fukui Nobuhiro	2256.23
5th All Japan Championship
Date	2010-03-21		Rating	2253.52
Round	Color	Result	Opponent
1	White	Loss	Shimoyama Takuma	2197.61
2	White	Draw	Kawasaki Nobuhiko	2154.97
3	White	Loss	Kobayashi Koichi	2075.57
4	White	Loss	Tada Ayako	2168.54
5	White	Win	Matsuoka Teruo	1953.56
6	Black	Win	Kuramoto Hideharu	1889.37
13th Mikami Cup Tournament
Date	2010-01-31		Rating	2257.77
Round	Color	Result	Opponent
S1	White	Loss	Ono Takayuki	2319.98
47th Meijinsen Qualification East-Japan area final round
Date	2009-07-05		Rating	2282.37
Round	Color	Result	Opponent
1	White	Loss	Yamaguchi Yusui	2482.89
2	White	Win	Ono Takayuki	2314.06
3	White	Win	Kudomi Takahiro	2307.56
4	White	Draw	Arita Nobuyoshi	2296.93
5	White	Draw	Tamura Kazumasa	2432.52
47th Meijinsen Qualification East-Japan area 1st round
Date	2009-06-14		Rating	2283.17
Round	Color	Result	Opponent
1	White	Win	Ono Takayuki	2314.45
2	Black	Loss	Sato Kiyotomi	2334.23
3	White	Win	Kudomi Takahiro	2308.02
4	White	Loss	Tamura Kazumasa	2433.64
26th Kanto Championship
Date	2009-05-17		Rating	2283.49
Round	Color	Result	Opponent
5	White	Win	Iwano Fumio	2134.70
The 6th Shanghai Renju Meijin Invitation Tournament
Date	2009-05-03		Rating	2283.34
Round	Color	Result	Opponent
1	Black	Win	Yu Manjiang	2451.75
2	Black	Loss	Zhu Jianfeng	2496.83
3	White	Loss	Zhou Keding	2443.81
4	White	Loss	Isobe Taizan	2341.15
5	White	Loss	Oosumi Yuuki	2564.58
6	Black	Loss	Iio Yoshihiro	2417.14
7	White	Win	Xu Bin	2153.48
4th All Japan Championship
Date	2009-03-21		Rating	2284.05
Round	Color	Result	Opponent
1	White	Win	Suzuki Rin	1917.13
2	White	Win	Sato Kiyotomi	2332.27
3	White	Win	Ishitani Shin-ichi	2298.18
4	White	Loss	Nakamura Shigeru	2747.75
5	White	Draw	Okabe Hiroshi	2570.77
6	White	Win	Yamaguchi Yusui	2473.20
12th Mikami Cup Tournament
Date	2009-01-18		Rating	2274.85
Round	Color	Result	Opponent
S1	White	Loss	Oosumi Yuuki	2549.33
46th Meijinsen Qualification East-Japan area 1st round
Date	2008-06-15		Rating	2245.42
Round	Color	Result	Opponent
2	White	Win	Tamada Yoichi	2200.36
ex	White	Loss	Sato Kiyotomi	2300.73
8 Kanto Renju Emperor Tournament 1st round
Date	2007-10-21		Rating	2212.88
Round	Color	Result	Opponent
2	White	Win	Kurimoto Masayuki	1791.27
4	White	Loss	Ono Takayuki	2312.70
The 5th Shanghai Renju Meijin Invitation Tournament
Date	2007-05-03		Rating	2193.05
Round	Color	Result	Opponent
1	White	Loss	Wu Hao	2551.91
2	White	Loss	Yu Manjiang	2504.70
3	White	Win	Zhang Yifeng	2357.55
SF1	White	Loss	Okabe Hiroshi	2502.70
SF2	White	Loss	Ge Chongyu	2320.73
SF3	White	Draw	Isobe Taizan	2321.08
SF4	White	Loss	Zhu Jianfeng	2430.99
2nd All Japan Championship (WC Qualification)
Date	2007-03-25		Rating	2188.62
Round	Color	Result	Opponent
1	White	Loss	Sato Kiyotomi	2275.17
2	White	Win	Maruta Hiroki	1934.98
Asian Championship
Date	2006-08-15		Rating	2166.49
Round	Color	Result	Opponent
1	White	Win	Kubo Izumi	2050.50
2	White	Loss	Park Jeong Ho	2315.19
3	White	Loss	Choi Yun-Seok	2122.94
4	Black	Loss	Ishitani Shin-ichi	2246.60
5	Black	Loss	Kim Su Chan	2051.51
6	White	Win	Cha Jee-Young	1655.00
7	White	Win	Kang Bo-Ra	1722.70
8	White	Draw	Chang Jae-Won	2031.66
The 4th Shanghai Renju Meijin Invitation Tournament
Date	2006-03-20		Rating	2169.66
Round	Color	Result	Opponent
1	White	Loss	Ge Lingfeng	2303.30
2	White	Loss	Wu Hao	2544.17
3	White	Loss	Zhu Jianfeng	2403.55
4	White	Loss	Isobe Taizan	2288.66
5	White	Loss	Li Hongbin	2385.29
6	White	Win	Xue Wenxi	2290.78
7	White	Loss	Takashima Junya	2382.20
World Championship BT
Date	2003-08-08		Rating	2243.09
Round	Color	Result	Opponent
1	White	Draw	Rybka Ales	2152.84
2	White	Win	Chen Ko-Han	2336.24
3	White	Win	Tamura Kazumasa	2325.32
4	White	Win	Chen Wei	2429.95
5	White	Loss	Lents Johann	2375.36
6	White	Loss	Ilu Timo	2304.13
7	White	Loss	Ishitani Shin-ichi	2265.56
8	White	Loss	Chernov Sergey	2243.74
9	White	Win	Ono Takayuki	2194.39
World Championship QT
Date	2003-07-31		Rating	2243.35
Round	Color	Result	Opponent
1	White	Loss	Iio Yoshihiro	2386.97
2	White	Win	Tarannikov Yuriy	2485.61
3	White	Draw	Dzainukov Eldar	2050.18
4	White	Win	Karasyov Maxim	2400.15
5	White	Loss	Sushkov Vladimir	2581.18
6	White	Loss	Gardstrom Petter	2333.12
7	White	Loss	Ilu Timo	2302.04
World Championship BT
Date	1999-08-05		Rating	2286.37
Round	Color	Result	Opponent
1	Black	Loss	Jonsson Peter	2152.19
2	White	Win	Gaulitz Joachim	2242.75
3	White	Win	Chen Chen-Kuo	2012.29
4	White	Loss	Nara Hideki	2475.62
5	White	Win	Poghosyan Albert	2231.67
6	White	Win	Khramov Andrey	2118.00
7	White	Loss	Filippov Sergey	2260.26
8	White	Draw	Volkov Sergey	2183.08
9	White	Win	Andersson Tord	2162.05
World Championship BT
Date	1995-08-07		Rating	2327.75
Round	Color	Result	Opponent
	White	Loss	Sinyov Igor	2422.87
	Black	Win	Matyuk Valeri	2133.30
	White	Win	Fedorkin Oleg	2280.80
	White	Win	Hayakawa Yoshimi	2450.36
	White	Loss	Gurckis Gatis	2205.40
	White	Win	Na Wei	1866.67
	Black	Win	Tuvikene Margus	2280.50
World Championship BT
Date	1993-08-12		Rating	2304.66
Round	Color	Result	Opponent
	White	Loss	Tuvikene Margus	2268.16
	White	Win	Matyuk Valeri	2113.29
	Black	Win	Henningsson Anders	2163.51
	White	Loss	Palmgren Jan	2189.88
	White	Win	Maltell Tommy	1950.15
	Black	Win	Golosov Viktor	2104.42
World Championship BT
Date	1991-08-10		Rating	2297.65
Round	Color	Result	Opponent
3	White	Win	Krasnonosov Dmitry	2211.38
6	Black	Win	Zabrodin Evgeny	2157.67