Gakumazawa Hideaki (嶽間沢秀明)

Place: Iwate, Japan

Rating: 2171.33, Std: 82.73, Rank: 492

First game: 2004-12-05, Last game: 2026-06-27

Top rating: 2215.61 (2017-07-02)

Games: 209, Wins: 100, Draws: 13, Losses: 96

Gy1: 19, Gy2: 32, Gy5: 55

40 Aomori Championship
Date	2026-06-27		Rating	2171.33
Round	Color	Result	Opponent
1	White	Loss	Shimura Hiroki	2256.16
2	White	Win	Kawaai Hitoshi	2046.10
3	White	Win	Tanno Yoshitaka	2030.15
4	White	Loss	Ishitani Shin-ichi	2343.16
5	Black	Win	Ooshina Seiichi	1998.47
64rd Meijinsen Qualification Tohoku area 1st round
Date	2026-05-16		Rating	2170.14
Round	Color	Result	Opponent
1	White	Win	Kawaai Hitoshi	2045.18
2	White	Loss	Miyamoto Syunju	2335.52
3	White	Win	Kusajima Masato	2257.97
4	Black	Win	Kawaai Hitoshi	2045.18
5	White	Loss	Miyamoto Syunju	2335.52
6	White	Loss	Kusajima Masato	2257.97
5th Masters Renju Tournament
Date	2026-01-25		Rating	2162.76
Round	Color	Result	Opponent
1	Black	Loss	Ishitani Shin-ichi	2352.67
2	Black	Loss	Iwano Fumio	2158.58
3	White	Loss	Miyamoto Syunju	2331.62
4	Black	Loss	Kawamura Norihiko	2555.33
5	Black	Draw	Kuga Akio	2411.70
41 Aomori Championship
Date	2025-11-29		Rating	2164.15
Round	Color	Result	Opponent
1	White	Win	Tanno Yoshitaka	2046.14
2	White	Win	Miyamoto Syunju	2320.80
3	Black	Win	Ooshina Seiichi	1974.26
39 Aomori Championship
Date	2025-06-28		Rating	2145.70
Round	Color	Result	Opponent
1	White	Win	Ooshina Seiichi	1969.66
2	White	Loss	Tanno Yoshitaka	2059.73
3	White	Loss	Kawaai Hitoshi	2059.43
4	White	Draw	Ishitani Shin-ichi	2369.90
5	White	Win	Miyamoto Syunju	2311.13
63rd Meijinsen Qualification Tohoku area 1st round
Date	2025-05-18		Rating	2140.65
Round	Color	Result	Opponent
1	White	Loss	Shimura Hiroki	2254.38
2	White	Draw	Kawaai Hitoshi	2060.37
4	White	Loss	Miyamoto Syunju	2311.55
5	Black	Draw	Kusajima Masato	2236.67
16th Tohoku Championship
Date	2025-03-09		Rating	2136.64
Round	Color	Result	Opponent
2	White	Loss	Ishitani Shin-ichi	2389.35
3	White	Loss	Shimura Hiroki	2247.69
4	Black	Draw	Kusajima Masato	2238.13
5	White	Win	Tamura Syougo	1767.15
38 Aomori Championship
Date	2024-06-29		Rating	2130.20
Round	Color	Result	Opponent
1	White	Win	Kawaai Hitoshi	2035.58
2	Black	Loss	Ishitani Shin-ichi	2416.18
3	White	Loss	Miyamoto Syunju	2353.48
5	White	Win	Tanno Yoshitaka	2057.79
62nd Meijinsen Qualification Tohoku area 1st round
Date	2024-05-19		Rating	2127.40
Round	Color	Result	Opponent
1	Black	Loss	Fujita Maiko	2431.98
2	White	Win	Shimura Hiroki	2168.85
3	Black	Loss	Miyamoto Syunju	2362.84
4	Black	Draw	Kusajima Masato	2269.11
5	Black	Win	Kawaai Hitoshi	2032.90
15th Tohoku Championship
Date	2024-03-31		Rating	2119.87
Round	Color	Result	Opponent
1	White	Loss	Ishitani Shin-ichi	2420.90
2	Black	Loss	Miyamoto Syunju	2366.22
3	Black	Loss	Kusajima Masato	2273.07
4	Black	Loss	Kawaai Hitoshi	2035.73
5	White	Loss	Fujita Maiko	2424.32
61th Meijinsen Qualification Tohoku area 1st round
Date	2023-05-21		Rating	2120.64
Round	Color	Result	Opponent
1	White	Loss	Inoue Fumiya	2535.21
2	White	Win	Kawaai Hitoshi	2052.34
4	Black	Loss	Kusajima Masato	2272.83
5	White	Draw	Miyamoto Syunju	2302.45
14th Tohoku Championship
Date	2023-02-19		Rating	2118.18
Round	Color	Result	Opponent
1	White	Win	Kawaai Hitoshi	2061.60
2	Black	Loss	Miyamoto Syunju	2279.04
3	White	Loss	Oomura Shu	2370.38
4	White	Loss	Kusajima Masato	2272.53
5	Black	Loss	Inoue Fumiya	2537.12
11th Tohoku Championship
Date	2019-10-06		Rating	2143.50
Round	Color	Result	Opponent
1	Black	Loss	Miyamoto Syunju	2298.16
2	White	Draw	Ishitani Shin-ichi	2383.67
3	Black	Win	Kusajima Masato	2244.50
4	Black	Loss	Hirono Masakazu	2057.07
5	Black	Loss	Okabe Hiroshi	2730.80
57 Meijinsen Qualification Tohoku area 1st round
Date	2019-04-07		Rating	2147.34
Round	Color	Result	Opponent
1	White	Draw	Miyamoto Syunju	2276.24
2	White	Loss	Kusajima Masato	2272.62
4	Black	Loss	Miyamoto Syunju	2276.24
5	White	Loss	Kusajima Masato	2272.62
35 Aomori Championship
Date	2018-07-01		Rating	2178.12
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1630.42
2	Black	Loss	Miyamoto Syunju	2265.69
3	Black	Loss	Tanno Yoshitaka	2135.51
56 Meijinsen Qualification Tohoku area 1st round
Date	2018-04-15		Rating	2194.26
Round	Color	Result	Opponent
2	White	Win	Miyamoto Syunju	2259.10
3	White	Win	Kusajima Masato	2310.45
4	Black	Win	Miyamoto Syunju	2259.10
5	Black	Loss	Kusajima Masato	2310.45
Aomori Meijinsen Tournament
Date	2017-11-05		Rating	2201.04
Round	Color	Result	Opponent
1	Black	Loss	Tanno Yoshitaka	2137.61
2	Black	Win	Ooshina Seiichi	2030.70
3	White	Win	Koseki Kenshou	1642.96
5	White	Loss	Miyamoto Syunju	2283.71
34 Aomori Championship
Date	2017-07-02		Rating	2215.61
Round	Color	Result	Opponent
1	Black	Win	Yamamoto Harue	1635.19
2	Black	Win	Koseki Kenshou	1653.59
3	White	Win	Kusajima Masato	2284.97
4	White	Win	Tanno Yoshitaka	2143.00
5	White	Win	Miyamoto Syunju	2274.95
55 Meijinsen Qualification Tohoku area 1st round
Date	2017-04-09		Rating	2209.91
Round	Color	Result	Opponent
1	White	Win	Miyamoto Syunju	2259.15
3	White	Loss	Kusajima Masato	2289.91
4	Black	Loss	Kusajima Masato	2289.91
5	White	Loss	Miyamoto Syunju	2259.15
54 Meijinsen Qualification Tohoku area 1st round
Date	2016-04-10		Rating	2210.80
Round	Color	Result	Opponent
1	White	Draw	Kusajima Masato	2268.01
2	White	Win	Miyamoto Syunju	2160.18
3	Black	Win	Miura Hitoshi	1776.77
32nd Aomori Championship
Date	2015-07-05		Rating	2193.27
Round	Color	Result	Opponent
1	White	Win	Ooshina Seiichi	2034.84
2	Black	Loss	Tanno Yoshitaka	2167.23
3	White	Win	Yamamoto Harue	1693.78
4	Black	Loss	Kobayashi Koichi	2288.01
5	White	Win	Koseki Kenshou	1688.63
7th Tohoku Championship
Date	2015-04-12		Rating	2192.80
Round	Color	Result	Opponent
1	Black	Loss	Okabe Hiroshi	2739.98
2	Black	Win	Miura Hitoshi	1792.62
3	Black	Loss	Ishitani Shin-ichi	2425.34
4	Black	Win	Miyamoto Syunju	2058.70
5	Black	Win	Kobayashi Koichi	2296.58
Sendai Memorial Cup
Date	2015-03-01		Rating	2188.81
Round	Color	Result	Opponent
1	Black	Win	Miura Hitoshi	1795.10
4	White	Loss	Kobayashi Koichi	2295.78
6	Black	Win	Miyamoto Syunju	2048.80
7	White	Win	Hirono Masakazu	1987.31
33th Aomori Meijinsen
Date	2014-11-09		Rating	2174.57
Round	Color	Result	Opponent
1	Black	Win	Shimoda Hiroyasu	1579.48
2	White	Loss	Kobayashi Koichi	2274.06
3	White	Win	Yamamoto Harue	1714.48
4	Black	Win	Koseki Kenshou	1702.48
5	Black	Loss	Tanno Yoshitaka	2168.44
6th Tohoku Championship
Date	2014-04-20		Rating	2164.76
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2237.27
2	White	Win	Kobayashi Koichi	2242.12
3	White	Win	Hirono Masakazu	1989.23
4	Black	Loss	Okabe Hiroshi	2759.69
5	Black	Win	Sato Kiyotomi	2471.32
7	Black	Loss	Miura Hitoshi	1803.69
32 Aomori Meijinsen
Date	2013-11-10		Rating	2149.60
Round	Color	Result	Opponent
1	White	Loss	Yamamoto Harue	1761.31
2	Black	Win	Koseki Kenshou	1695.94
3	White	Win	Miura Hitoshi	1795.34
4	White	Win	Chiba Tomio	1785.86
5	Black	Win	Tanno Yoshitaka	2157.31
5th Tohoku Championship
Date	2013-04-14		Rating	2132.14
Round	Color	Result	Opponent
1	Black	Loss	Okabe Hiroshi	2740.75
2	Black	Loss	Suzuki Rin	2052.51
3	White	Loss	Nakamura Shigeru	2867.42
4	Black	Win	Miura Hitoshi	1829.43
5	White	Loss	Kusajima Masato	2216.04
31st Aomori Meijinsen
Date	2012-11-10		Rating	2134.56
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1714.94
2	Black	Win	Kudou Shin-ichi	1890.00
3	Black	Win	Asari Katsuki	1721.82
4	Black	Win	Miura Hitoshi	1867.75
5	Black	Win	Tanno Yoshitaka	2151.68
30th Aomori Championship
Date	2012-07-01		Rating	2120.99
Round	Color	Result	Opponent
1	Black	Loss	Kudou Shin-ichi	1895.39
2	White	Win	Yamamoto Harue	1701.21
3	White	Draw	Kim Chang-Su	2038.66
4	Black	Win	Yokono Yoshiki	1855.34
5	White	Loss	Tanno Yoshitaka	2150.05
4th Tohoku Championship
Date	2012-04-08		Rating	2122.62
Round	Color	Result	Opponent
1	Black	Loss	Kudomi Takahiro	2431.16
2	Black	Loss	Ozawa Tetsushi	2062.39
3	White	Win	Suzuki Junichiro	1938.70
4	Black	Win	Maruta Hiroki	2087.68
5	Black	Draw	Kobayashi Koichi	2226.07
7th All Japan Championship
Date	2012-01-29		Rating	2123.04
Round	Color	Result	Opponent
1	Black	Loss	Ishitani Shin-ichi	2381.82
2	Black	Loss	Kamiya Shunsuke	2462.34
3	White	Win	Suzuki Rin	1996.20
4	Black	Loss	Kudomi Takahiro	2428.24
5	Black	Win	Fujikawa Masaki	2075.74
6	Black	Loss	Kon Akira	2021.24
30th Aomori-Meijinsen touranament
Date	2011-11-13		Rating	2126.41
Round	Color	Result	Opponent
1	Black	Win	Yamamoto Harue	1668.34
2	White	Win	Yamamoto Yuuichi	1717.23
3	Black	Win	Tsushima Norito	1692.56
4	Black	Win	Tanno Yoshitaka	2126.44
5	White	Win	Nara Tsurue	1808.65
29th Aomori Championship
Date	2011-07-03		Rating	2119.40
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1673.07
2	Black	Win	Tanno Yoshitaka	2113.81
3	Black	Loss	Yokono Yoshiki	1896.92
3rd Tohoku Championship
Date	2011-02-27		Rating	2115.84
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1686.94
2	Black	Win	Yokono Yoshiki	1895.12
3	Black	Loss	Miyagawa Sou	2123.20
4	Black	Loss	Fukui Nobuhiro	2393.46
5	Black	Win	Miura Hitoshi	1934.94
14th Mikami Cup Tournament
Date	2011-01-30		Rating	2115.36
Round	Color	Result	Opponent
S1	Black	Loss	Mitsumori Masao	2330.67
S3	White	Loss	Isobe Taizan	2410.35
S4	Black	Loss	Ishitani Shin-ichi	2393.97
S5	White	Loss	Ono Takayuki	2395.43
29th Aomori-Meijinsen Tournament
Date	2010-11-14		Rating	2120.13
Round	Color	Result	Opponent
1	Black	Win	Yokono Yoshiki	1901.15
2	Black	Win	Chiba Tomio	1750.07
3	Black	Win	Miura Hitoshi	1943.19
4	Black	Win	Yamamoto Harue	1700.66
5	Black	Loss	Tanno Yoshitaka	2097.81
2nd Tohoku Championship
Date	2010-03-14		Rating	2131.45
Round	Color	Result	Opponent
1	Black	Loss	Hirono Masakazu	1970.37
2	Black	Loss	Ishitani Shin-ichi	2398.21
3	Black	Win	Miura Hitoshi	1927.02
4	White	Win	Kobayashi Koichi	2133.21
5	White	Win	Seiryu Masanori	1987.92
28th Aomori-Meijinsen Tournament
Date	2009-11-01		Rating	2135.39
Round	Color	Result	Opponent
1	White	Win	Yamamoto Harue	1708.51
2	White	Loss	Tamada Yoichi	2406.04
3	White	Win	Chiba Tomio	1750.84
4	Black	Win	Yamamoto Yuuichi	1711.25
5	White	Loss	Miyagawa Sou	2136.56
8th Middle-dan Players Tournament
Date	2009-08-30		Rating	2140.16
Round	Color	Result	Opponent
1	Black	Win	Kobayashi Koichi	2133.04
2	Black	Loss	Koyama Jun	2446.08
3	Black	Loss	Maruyama Yasushi	2263.73
4	Black	Loss	Yamamoto Yasuhiro	2149.41
5	White	Loss	Kubo Izumi	2115.58
6	Black	Win	Kato Yasuhiro	2050.80
1st Tohoku Championship
Date	2009-02-22		Rating	2167.78
Round	Color	Result	Opponent
1	White	Win	Miura Hitoshi	1937.85
2	Black	Win	Sato Ryota	1526.21
3	Black	Loss	Ishitani Shin-ichi	2392.70
4	Black	Loss	Sato Kiyotomi	2453.32
5	Black	Loss	Tanno Yoshitaka	2120.35
12th Mikami Cup Tournament
Date	2009-01-18		Rating	2175.66
Round	Color	Result	Opponent
A1	Black	Win	Tamada Yoichi	2280.46
A2	White	Win	Tomobe Katsuhiro	2110.79
A3	Black	Win	Kobayashi Koichi	2116.95
A4	White	Win	Tanizaki Ryusuke	2131.90
A5	Black	Loss	Ono Takayuki	2412.03
7th 6-7 dan Tournament
Date	2008-09-28		Rating	2179.67
Round	Color	Result	Opponent
1	Black	Win	Kubo Izumi	2109.74
2	Black	Loss	Ono Takayuki	2410.99
3	Black	Loss	Kobayashi Koichi	2110.11
4	White	Win	Kato Yasuhiro	1998.46
5	White	Win	Tamura Kazumasa	2471.82
6	Black	Loss	Maruyama Yasushi	2234.28
6dan 7dan Tournament
Date	2007-10-08		Rating	2181.55
Round	Color	Result	Opponent
1	Black	Draw	Nagao Noriaki	2249.72
2	White	Win	Yamamoto Yasuhiro	2091.64
3	Black	Win	Kato Yasuhiro	1970.37
4	Black	Win	Ono Takayuki	2376.74
5	White	Loss	Sato Kiyotomi	2402.45
6	Black	Loss	Tamura Kazumasa	2409.21
5th 6-7 dan Tournament
Date	2004-12-05		Rating	2069.24
Round	Color	Result	Opponent
1	Black	Loss	Sato Kiyotomi	2369.05
2	Black	Win	Yamamoto Yasuhiro	2046.97
3	Black	Loss	Arita Nobuyoshi	2281.79
4	Black	Win	Tadokoro Hosai	1927.42
5	Black	Loss	Hiwatashi Kikuma	1949.91
6	White	Loss	Miyagawa Junzo	2256.72