Mitsumori Masao (三森政男)

Place: Hasuta, Japan

Rating: 2256.22, Rank: 244

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

Top rating: 2307.55 (2012-01-29)

Games: 236, Wins: 105, Draws: 15, Losses: 116

Gy1: 0, Gy2: 0, Gy5: 8

57 Meijinsen Qualification Kanto area 1st round
Date	2019-05-12		Rating	2256.22
Round	Color	Result	Opponent
1	White	Loss	Maruta Hiroki	2127.30
2	White	Loss	Inoue Fumiya	2356.51
3	White	Win	Iwano Fumio	2145.87
4	White	Win	Maruta Koji	2072.91
56 Meijinsen Qualification Kanto area 1st round
Date	2018-05-13		Rating	2267.93
Round	Color	Result	Opponent
1	White	Win	Koyama Jun	2516.18
2	White	Loss	Sato Kiyotomi	2380.82
3	Black	Win	Iwano Fumio	2191.12
4	Black	Loss	Ono Takayuki	2320.86
55 Meijinsen Qualification Kanto area 1st round
Date	2017-05-21		Rating	2268.01
Round	Color	Result	Opponent
1	Black	Draw	Chigira Makoto	2003.53
2	White	Win	Iwano Fumio	2204.88
3	White	Loss	Ono Takayuki	2310.14
4	White	Loss	Sato Kiyotomi	2406.57
54 Meijinsen Qualification East Japan area 2nd round
Date	2016-06-12		Rating	2284.93
Round	Color	Result	Opponent
1	Black	Loss	Tamada Yoichi	2496.07
2	White	Loss	Okabe Hiroshi	2653.10
3	White	Loss	Kamiya Shunsuke	2657.51
4	White	Draw	Koyama Jun	2555.99
5	White	Win	Kusajima Masato	2207.45
54 Meijinsen Qualification Kanto area 1st round
Date	2016-05-22		Rating	2285.54
Round	Color	Result	Opponent
1	White	Win	Chigira Makoto	1991.93
2	White	Win	Kamiya Shunsuke	2655.47
3	White	Loss	Sato Kiyotomi	2443.62
4	White	Win	Maruta Koji	2117.54
53 Meijinsen Qualification East Japan area 1st round
Date	2015-05-10		Rating	2267.33
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2544.87
2	White	Loss	Nakamura Souta	2219.40
3	Black	Win	Chigira Makoto	1967.26
4	Black	Win	Fujikawa Masaki	2045.15
10th All Japan Championship
Date	2015-03-29		Rating	2266.46
Round	Color	Result	Opponent
1	White	Win	Fujita Yudai	2321.64
2	White	Loss	Tamada Yoichi	2507.94
3	White	Win	Kubo Izumi	2030.62
4	White	Loss	Koyama Jun	2537.91
5	White	Loss	Tanizaki Ryusuke	2137.61
6	White	Loss	Miyagawa Junzo	2178.39
1st Senior Masters Championship
Date	2014-08-29		Rating	2276.09
Round	Color	Result	Opponent
1	White	Win	Miyagawa Junzo	2160.29
2	Black	Loss	Ishitani Shin-ichi	2379.30
3	Black	Win	Miura Hitoshi	1764.45
4	White	Win	Kubo Izumi	2033.31
5	White	Loss	Isobe Taizan	2363.27
6	White	Win	Kobayashi Koichi	2195.06
7	White	Win	Kato Yasuhiro	2032.82
52 Meijinsen Qualification East Japan area 1st round
Date	2014-06-08		Rating	2277.16
Round	Color	Result	Opponent
1	White	Loss	Tamada Yoichi	2486.42
2	White	Loss	Kawamura Norihiko	2582.56
3	White	Win	Iwano Fumio	2195.21
4	White	Win	Kudomi Takahiro	2265.88
Team World Championship
Date	2014-05-03		Rating	2276.31
Round	Color	Result	Opponent
5	White	Loss	Artemyev Sergey	2525.08
6	White	Loss	Oosumi Yuuki	2750.51
51 Meijinsen Qualification East-Japan area 2nd round
Date	2013-07-21		Rating	2275.02
Round	Color	Result	Opponent
1	White	Loss	Kudomi Takahiro	2322.81
2	Black	Win	Tomobe Katsuhiro	2101.00
3	White	Win	Kato Yasuhiro	2070.47
4	White	Loss	Sato Kiyotomi	2397.42
5	White	Loss	Kamiya Shunsuke	2489.33
51 Meijinsen Qualification East-Japan area 1st round
Date	2013-06-16		Rating	2276.12
Round	Color	Result	Opponent
1	White	Loss	Kato Yasuhiro	2076.55
2	White	Win	Kobayashi Koichi	2162.79
3	White	Loss	Kamiya Shunsuke	2483.99
4	White	Win	Ono Takayuki	2325.80
29th Kanto Championship
Date	2013-05-12		Rating	2277.43
Round	Color	Result	Opponent
1	White	Draw	Tada Ayako	2234.93
2	White	Draw	Isobe Taizan	2338.55
3	Black	Loss	Nakamura Shigeru	2798.27
4	White	Win	Tomobe Katsuhiro	2107.01
5	White	Loss	Kato Yasuhiro	2079.01
8th All Japan Championship
Date	2013-03-24		Rating	2281.10
Round	Color	Result	Opponent
1	White	Loss	Nakamura Shigeru	2799.40
2	White	Win	Kubo Izumi	2032.86
3	White	Win	Kato Yasuhiro	2076.36
4	White	Loss	Isobe Taizan	2344.29
5	White	Win	Kudomi Takahiro	2346.57
6	White	Loss	Kamiya Shunsuke	2471.43
16th Mikami Cup Tournament
Date	2013-01-20		Rating	2284.36
Round	Color	Result	Opponent
S1	White	Loss	Okabe Hiroshi	2651.63
S2	White	Loss	Fukui Nobuhiro	2494.19
S3	White	Win	Kobayashi Koichi	2159.59
S4	White	Win	Ishitani Shin-ichi	2312.55
S5	Black	Loss	Kudomi Takahiro	2349.12
13 Kanto Renju Emperor Tournament 1st round
Date	2012-10-21		Rating	2288.25
Round	Color	Result	Opponent
1	White	Win	Kato Yasuhiro	2053.16
2	White	Loss	Maruta Koji	2091.15
3	White	Loss	Ono Takayuki	2357.26
4	White	Win	Maruta Hiroki	2064.34
50 Meijinsen Qualification East-Japan area 1st round
Date	2012-06-03		Rating	2301.90
Round	Color	Result	Opponent
1	Black	Win	Maruta Koji	2077.57
2	White	Win	Sato Kiyotomi	2340.41
3	Black	Loss	Nakamura Shigeru	2808.27
4	White	Loss	Kudomi Takahiro	2355.10
29th Kanto Championship
Date	2012-05-13		Rating	2303.48
Round	Color	Result	Opponent
1	Black	Win	Kato Yasuhiro	2027.12
2	White	Loss	Kudomi Takahiro	2355.10
3	White	Win	Nakayama Tomoharu	2549.33
4	White	Loss	Nakamura Shigeru	2807.97
5	White	Win	Iwano Fumio	2087.50
15th Mikami Cup Tournament
Date	2012-03-11		Rating	2304.88
Round	Color	Result	Opponent
S2	White	Loss	Oosumi Yuuki	2718.73
S3	White	Win	Tadokoro Hosai	1845.76
S4	White	Loss	Nakamura Shigeru	2802.80
S5	Black	Loss	Ishitani Shin-ichi	2316.04
7th All Japan Championship
Date	2012-01-29		Rating	2307.55
Round	Color	Result	Opponent
1	Black	Win	Suzuki Rin	1949.16
2	White	Loss	Iio Yoshihiro	2420.54
3	White	Win	Kobayashi Koichi	2152.20
4	White	Win	Ishitani Shin-ichi	2320.24
5	White	Loss	Oosumi Yuuki	2715.38
6	White	Win	Tamada Yoichi	2425.43
12 Kanto Renju Emperor Tournament 2nd round
Date	2012-01-15		Rating	2307.24
Round	Color	Result	Opponent
1	White	Win	Nakayama Tomoharu	2532.61
2	White	Loss	Okabe Hiroshi	2631.59
3	White	Loss	Nakamura Shigeru	2799.27
4	White	Loss	Oosumi Yuuki	2713.88
5	White	Loss	Kamiya Shunsuke	2411.48
12 Kanto Renju Emperor Tournament 1st round
Date	2011-10-23		Rating	2304.42
Round	Color	Result	Opponent
1	White	Win	Kobayashi Koichi	2135.89
2	White	Loss	Kamiya Shunsuke	2400.46
3	White	Win	Ono Takayuki	2345.74
4	White	Win	Kudomi Takahiro	2347.16
49 Meijinsen Qualification East-Japan area 1st round
Date	2011-06-12		Rating	2289.79
Round	Color	Result	Opponent
1	White	Loss	Nagao Noriaki	2373.95
2	White	Loss	Ono Takayuki	2339.17
3	White	Loss	Kudomi Takahiro	2338.42
4	White	Win	Maruta Hiroki	2059.11
28th Kanto Championship
Date	2011-05-22		Rating	2289.09
Round	Color	Result	Opponent
1	White	Loss	Fujikawa Masaki	2033.90
2	Black	Win	Maruta Hiroki	2060.92
3	White	Loss	Tomobe Katsuhiro	2167.85
4	White	Win	Ono Takayuki	2338.79
5	White	Win	Nakayama Tomoharu	2487.58
14th Mikami Cup Tournament
Date	2011-01-30		Rating	2284.85
Round	Color	Result	Opponent
S1	White	Win	Gakumazawa Hideaki	2039.66
S2	White	Loss	Oosumi Yuuki	2662.90
S3	White	Loss	Ono Takayuki	2337.83
S5	Black	Loss	Nakamura Shigeru	2776.59
11 Kanto Renju Emperor Tournament 2nd round
Date	2010-11-21		Rating	2284.21
Round	Color	Result	Opponent
5	White	Win	Fukui Nobuhiro	2295.28
11 Kanto Renju Emperor Tournament 1st round
Date	2010-10-31		Rating	2283.22
Round	Color	Result	Opponent
1	White	Win	Iwano Fumio	2080.45
2	White	Win	Nagao Noriaki	2362.51
3	White	Loss	Okabe Hiroshi	2616.32
4	White	Win	Ono Takayuki	2334.55
Meijinsen Qualification East-Japan area 1st round
Date	2010-06-27		Rating	2265.13
Round	Color	Result	Opponent
1	Black	Win	Kato Yasuhiro	2030.91
2	White	Win	Fukui Nobuhiro	2264.39
3	White	Draw	Isobe Taizan	2340.49
4	White	Loss	Ono Takayuki	2333.01
27th Kanto Championship
Date	2010-05-23		Rating	2259.05
Round	Color	Result	Opponent
1	White	Loss	Tomobe Katsuhiro	2154.37
2	Black	Win	Maruta Hiroki	2041.85
3	White	Loss	Ono Takayuki	2331.47
4	White	Loss	Nagao Noriaki	2352.36
5	Black	Loss	Fukui Nobuhiro	2258.82
5th All Japan Championship
Date	2010-03-21		Rating	2256.01
Round	Color	Result	Opponent
1	White	Loss	Shimoyama Takuma	2200.03
2	White	Draw	Kawasaki Nobuhiko	2157.44
3	White	Loss	Kobayashi Koichi	2077.97
4	White	Loss	Tada Ayako	2170.83
5	White	Win	Matsuoka Teruo	1955.77
6	Black	Win	Kuramoto Hideharu	1891.19
13th Mikami Cup Tournament
Date	2010-01-31		Rating	2260.24
Round	Color	Result	Opponent
S1	White	Loss	Ono Takayuki	2322.62
47th Meijinsen Qualification East-Japan area final round
Date	2009-07-05		Rating	2284.82
Round	Color	Result	Opponent
1	White	Loss	Yamaguchi Yusui	2486.00
2	White	Win	Ono Takayuki	2316.60
3	White	Win	Kudomi Takahiro	2310.37
4	White	Draw	Arita Nobuyoshi	2299.35
5	White	Draw	Tamura Kazumasa	2435.40
47th Meijinsen Qualification East-Japan area 1st round
Date	2009-06-14		Rating	2285.62
Round	Color	Result	Opponent
1	White	Win	Ono Takayuki	2316.97
2	Black	Loss	Sato Kiyotomi	2337.53
3	White	Win	Kudomi Takahiro	2310.83
4	White	Loss	Tamura Kazumasa	2436.51
26th Kanto Championship
Date	2009-05-17		Rating	2285.93
Round	Color	Result	Opponent
5	White	Win	Iwano Fumio	2136.26
The 6th Shanghai Renju Meijin Invitation Tournament
Date	2009-05-03		Rating	2285.77
Round	Color	Result	Opponent
1	Black	Win	Yu Manjiang	2454.59
2	Black	Loss	Zhu Jianfeng	2499.66
3	White	Loss	Zhou Keding	2446.73
4	White	Loss	Isobe Taizan	2344.64
5	White	Loss	Oosumi Yuuki	2567.55
6	Black	Loss	Iio Yoshihiro	2420.46
7	White	Win	Xu Bin	2156.06
4th All Japan Championship
Date	2009-03-21		Rating	2286.45
Round	Color	Result	Opponent
1	White	Win	Suzuki Rin	1919.56
2	White	Win	Sato Kiyotomi	2335.52
3	White	Win	Ishitani Shin-ichi	2301.00
4	White	Loss	Nakamura Shigeru	2750.85
5	White	Draw	Okabe Hiroshi	2573.58
6	White	Win	Yamaguchi Yusui	2476.30
12th Mikami Cup Tournament
Date	2009-01-18		Rating	2277.20
Round	Color	Result	Opponent
S1	White	Loss	Oosumi Yuuki	2552.33
46th Meijinsen Qualification East-Japan area 1st round
Date	2008-06-15		Rating	2247.55
Round	Color	Result	Opponent
2	White	Win	Tamada Yoichi	2202.62
ex	White	Loss	Sato Kiyotomi	2303.98
8 Kanto Renju Emperor Tournament 1st round
Date	2007-10-21		Rating	2214.76
Round	Color	Result	Opponent
2	White	Win	Kurimoto Masayuki	1791.87
4	White	Loss	Ono Takayuki	2315.11
The 5th Shanghai Renju Meijin Invitation Tournament
Date	2007-05-03		Rating	2194.74
Round	Color	Result	Opponent
1	White	Loss	Wu Hao	2554.79
2	White	Loss	Yu Manjiang	2507.46
3	White	Win	Zhang Yifeng	2360.33
SF1	White	Loss	Okabe Hiroshi	2505.68
SF2	White	Loss	Ge Chongyu	2323.18
SF3	White	Draw	Isobe Taizan	2326.47
SF4	White	Loss	Zhu Jianfeng	2433.67
2nd All Japan Championship (WC Qualification)
Date	2007-03-25		Rating	2190.23
Round	Color	Result	Opponent
1	White	Loss	Sato Kiyotomi	2278.46
2	White	Win	Maruta Hiroki	1937.05
Asian Championship
Date	2006-08-15		Rating	2167.64
Round	Color	Result	Opponent
1	White	Win	Kubo Izumi	2053.98
2	White	Loss	Park Jeong Ho	2318.10
3	White	Loss	Choi Yun-Seok	2128.77
4	Black	Loss	Ishitani Shin-ichi	2249.53
5	Black	Loss	Kim Su Chan	2053.47
6	White	Win	Cha Jee-Young	1655.46
7	White	Win	Kang Bo-Ra	1723.13
8	White	Draw	Chang Jae-Won	2033.06
The 4th Shanghai Renju Meijin Invitation Tournament
Date	2006-03-20		Rating	2170.34
Round	Color	Result	Opponent
1	White	Loss	Ge Lingfeng	2306.08
2	White	Loss	Wu Hao	2547.03
3	White	Loss	Zhu Jianfeng	2406.22
4	White	Loss	Isobe Taizan	2296.84
5	White	Loss	Li Hongbin	2387.95
6	White	Win	Xue Wenxi	2293.29
7	White	Loss	Takashima Junya	2385.62
World Championship BT
Date	2003-08-08		Rating	2239.16
Round	Color	Result	Opponent
1	White	Draw	Rybka Ales	2156.14
2	White	Win	Chen Ko-Han	2335.06
3	White	Win	Tamura Kazumasa	2328.02
4	White	Win	Chen Wei	2428.84
5	White	Loss	Lents Johann	2367.60
6	White	Loss	Ilu Timo	2298.45
7	White	Loss	Ishitani Shin-ichi	2269.52
8	White	Loss	Chernov Sergey	2246.94
9	White	Win	Ono Takayuki	2197.46
World Championship QT
Date	2003-07-31		Rating	2239.35
Round	Color	Result	Opponent
1	White	Loss	Iio Yoshihiro	2391.66
2	White	Win	Tarannikov Yuriy	2461.53
3	White	Draw	Dzainukov Eldar	2088.18
4	White	Win	Karasyov Maxim	2400.35
5	White	Loss	Sushkov Vladimir	2584.58
6	White	Loss	Gardstrom Petter	2336.64
7	White	Loss	Ilu Timo	2296.48
World Championship BT
Date	1999-08-05		Rating	2263.88
Round	Color	Result	Opponent
1	Black	Loss	Jonsson Peter	2154.96
2	White	Win	Gaulitz Joachim	2250.10
3	White	Win	Chen Chen-Kuo	2029.74
4	White	Loss	Nara Hideki	2474.50
5	White	Win	Poghosyan Albert	2237.45
6	White	Win	Khramov Andrey	2127.75
7	White	Loss	Filippov Sergey	2273.86
8	White	Draw	Volkov Sergey	2171.03
9	White	Win	Andersson Tord	2169.73
“Compaq Cup” International Invitational Tournament
Date	1997-05-10		Rating	2257.49
Round	Color	Result	Opponent
1	White	Win	Li Dong	2028.03
2	White	Win	Ishitani Shin-ichi	2222.44
3	Black	Loss	Nara Hideki	2453.92
4	White	Win	Su Liang	1924.48
5	Black	Draw	Karlsson Stefan	2354.17
6	White	Loss	Isobe Taizan	2278.61
7	White	Loss	Zhang Jinyu	2199.36
8	White	Loss	Deng Jinghui	2062.52
9	White	Win	Yu Jingping	1950.80
World Championship BT
Date	1995-08-07		Rating	2299.24
Round	Color	Result	Opponent
	White	Loss	Sinyov Igor	2430.54
	Black	Win	Matyuk Valeri	2137.13
	White	Win	Fedorkin Oleg	2281.08
	White	Win	Hayakawa Yoshimi	2453.23
	White	Loss	Gurckis Gatis	2213.21
	White	Win	Na Wei	1869.43
	Black	Win	Tuvikene Margus	2288.41
World Championship BT
Date	1993-08-12		Rating	2287.96
Round	Color	Result	Opponent
	White	Loss	Tuvikene Margus	2274.38
	White	Win	Matyuk Valeri	2116.35
	Black	Win	Henningsson Anders	2168.61
	White	Loss	Palmgren Jan	2195.75
	White	Win	Maltell Tommy	1952.60
	Black	Win	Golosov Viktor	2121.34
World Championship BT
Date	1991-08-10		Rating	2284.16
Round	Color	Result	Opponent
3	White	Win	Krasnonosov Dmitry	2214.85
6	Black	Win	Zabrodin Evgeny	2162.01