Maruta Koji (丸田光治)

Place: Tokyo, Japan

Rating: 2078.66, Std: 102.62, Rank: 480

First game: 1996-03-01, Last game: 2022-07-31

Top rating: 2196.87 (2003-11-16)

Games: 225, Wins: 89, Draws: 8, Losses: 128

Gy1: 5, Gy2: 19, Gy5: 48

39 Kanto Championship
Date	2022-07-31		Rating	2078.66
Round	Color	Result	Opponent
2	White	Win	Li Haoyang	1908.14
3	White	Loss	Ishitani Shin-ichi	2259.36
Special Tournament
Date	2022-04-10		Rating	2078.56
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2323.67
2	White	Loss	Inoue Fumiya	2422.17
3	White	Win	Maruta Hiroki	2152.94
38 Kanto Championship
Date	2021-08-08		Rating	2073.13
Round	Color	Result	Opponent
1	White	Loss	Inoue Fumiya	2424.71
2	White	Win	Kobayashi Nanako	1958.77
3	White	Win	Fujita Maiko	2290.72
16th All Japan Championship
Date	2021-03-28		Rating	2060.28
Round	Color	Result	Opponent
1	White	Loss	Makino Mitsunori	2492.58
2	White	Loss	Ishitani Shin-ichi	2291.01
3	White	Loss	Yoshimoto Yuta	2169.43
4	White	Loss	Kawaai Hitoshi	1959.19
5	White	Loss	Suenaga Daiki	2222.54
6	Black	Win	Maruta Hiroki	2170.62
24th New Year(Mikami)Cup
Date	2021-01-29		Rating	2058.57
Round	Color	Result	Opponent
S1	Black	Win	Maruta Hiroki	2169.84
S2	White	Loss	Makino Mitsunori	2486.70
S3	White	Loss	Okabe Hiroshi	2676.16
S4	Black	Loss	Ono Takayuki	2336.79
S5	White	Loss	Ishitani Shin-ichi	2304.19
21 Renju Emperor Tournament Kanto area 1st round
Date	2020-11-15		Rating	2055.34
Round	Color	Result	Opponent
1	White	Loss	Kawaai Hitoshi	1960.69
2	White	Loss	Suenaga Daiki	2224.17
3	White	Loss	Shimura Hiroki	1947.47
4	White	Win	Kasahara Reiko	1631.43
37 Kanto Championship
Date	2020-08-10		Rating	2061.80
Round	Color	Result	Opponent
3	White	Win	Okada Akihiro	1879.41
5	Black	Loss	Kato Yasuhiro	2047.75
6	Black	Win	Shimura Hiroki	1925.56
58 Meijinsen Qualification Kanto area 1st round
Date	2020-06-21		Rating	2064.94
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2307.57
2	White	Win	Ito Midori	1713.92
20 Renju Emperor Tournament Kanto area 1st round
Date	2019-11-10		Rating	2080.35
Round	Color	Result	Opponent
2	White	Win	Shibata Satoru	1769.05
3	White	Loss	Ishitani Shin-ichi	2325.85
4	White	Win	Tomobe Katsuhiro	2097.57
36 Kanto Championship
Date	2019-07-28		Rating	2083.90
Round	Color	Result	Opponent
5	White	Win	Shibata Satoru	1766.71
6	White	Loss	Miyamoto Syunju	2225.69
57 Meijinsen Qualification East Japan area 2nd round
Date	2019-06-23		Rating	2085.52
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2195.43
2	White	Loss	Koyama Jun	2548.68
3	Black	Win	Maruta Hiroki	2136.87
4	White	Loss	Ono Takayuki	2344.77
5	White	Draw	Inoue Fumiya	2371.26
57 Meijinsen Qualification Kanto area 1st round
Date	2019-05-12		Rating	2086.48
Round	Color	Result	Opponent
1	White	Win	Inoue Fumiya	2371.61
2	White	Win	Maruta Hiroki	2138.00
3	White	Loss	Ono Takayuki	2346.65
4	Black	Loss	Mitsumori Masao	2273.31
13 Middle-dan Players Tournament
Date	2018-08-12		Rating	2072.98
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2239.68
2	White	Loss	Miyamoto Syunju	2211.75
4	White	Loss	Kusajima Masato	2239.68
5	White	Loss	Miyamoto Syunju	2211.75
35 Kanto Championship
Date	2018-07-16		Rating	2074.00
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2777.13
56 Meijinsen Qualification Kanto area 1st round
Date	2018-05-13		Rating	2076.50
Round	Color	Result	Opponent
1	White	Loss	Sato Kiyotomi	2397.46
18 Kanto Renju Emperor Tournament 1st round
Date	2017-11-01		Rating	2085.99
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2666.87
2	Black	Win	Koyama Akihiro	1928.26
3	White	Loss	Ishitani Shin-ichi	2349.80
4	White	Loss	Maruta Hiroki	2101.30
34 Kanto Championship
Date	2017-07-16		Rating	2094.55
Round	Color	Result	Opponent
1	White	Win	Matsumoto Hiro	1705.69
2	Black	Loss	Ishitani Shin-ichi	2349.17
3	White	Loss	Ishima Ryoma	2112.82
12th All Japan Championship
Date	2017-03-26		Rating	2108.12
Round	Color	Result	Opponent
1	White	Draw	Iio Yoshihiro	2494.19
2	White	Loss	Tachi Masaya	2489.60
3	Black	Draw	Nishida Toshio	2053.07
4	Black	Loss	Ono Takayuki	2321.70
5	White	Win	Sakamoto Hirouji	2233.86
6	White	Loss	Fujita Yudai	2434.66
17 Kanto Renju Emperor Tournament 2nd round
Date	2016-12-10		Rating	2116.74
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2734.37
2	White	Loss	Okabe Hiroshi	2665.15
3	Black	Loss	Sato Kiyotomi	2446.77
4	White	Loss	Ishitani Shin-ichi	2353.81
5	White	Loss	Nakamura Shigeru	2901.72
17 Kanto Renju Emperor Tournament 1st round
Date	2016-11-23		Rating	2118.64
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2664.37
2	Black	Win	Demachi Koichiro	1897.77
3	White	Loss	Sato Kiyotomi	2447.83
4	White	Win	Maruta Hiroki	2081.50
ex1	Black	Loss	Iwano Fumio	2222.86
33 Kanto Championship
Date	2016-07-31		Rating	2130.33
Round	Color	Result	Opponent
1	White	Win	Cho Enkun	1633.11
2	Black	Loss	Okabe Hiroshi	2671.05
3	White	Win	Kato Yasuhiro	2017.26
54 Meijinsen Qualification Kanto area 1st round
Date	2016-05-22		Rating	2135.61
Round	Color	Result	Opponent
2	Black	Loss	Sato Kiyotomi	2463.08
3	White	Win	Iwano Fumio	2204.59
4	Black	Loss	Mitsumori Masao	2304.44
11th All Japan Championship
Date	2016-01-11		Rating	2143.68
Round	Color	Result	Opponent
1	Black	Loss	Kamiya Shunsuke	2669.11
2	Black	Draw	Chigira Makoto	1998.38
3	White	Loss	Fujita Yudai	2401.35
5	White	Win	Kato Yasuhiro	2014.11
6	White	Win	Suzuki Rin	1914.39
Kanto Championship
Date	2015-07-20		Rating	2153.05
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2709.72
4	White	Win	Hashimoto Takuya	1984.68
5	Black	Win	Kato Yasuhiro	2026.36
6	White	Win	Fujikawa Masaki	2068.15
10th All Japan Championship
Date	2015-03-29		Rating	2151.20
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2625.15
2	White	Win	Fujikawa Masaki	2058.73
31th Kanto Championship
Date	2014-05-11		Rating	2138.55
Round	Color	Result	Opponent
2	White	Loss	Tamura Kazumasa	2481.74
3	White	Loss	Tomobe Katsuhiro	2086.97
4	White	Win	Maruta Hiroki	2072.06
11th Middle-dan players Tournament
Date	2013-08-17		Rating	2133.83
Round	Color	Result	Opponent
1	White	Loss	Kashihara Akihiko	2295.95
2	Black	Loss	Kato Yasuhiro	2090.08
3	White	Win	Maruta Hiroki	2097.12
4	White	Win	Kubo Izumi	2060.04
5	Black	Win	Miyagawa Junzo	2182.67
6	White	Loss	Nakayama Tomoharu	2611.66
51 Meijinsen Qualification East-Japan area 1st round
Date	2013-06-16		Rating	2130.40
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2360.52
29th Kanto Championship
Date	2013-05-12		Rating	2129.01
Round	Color	Result	Opponent
3	Black	Loss	Suzuki Rin	2007.24
4	White	Win	Nakamura Souta	2072.69
5	White	Win	Tada Ayako	2254.22
13 Kanto Renju Emperor Tournament 1st round
Date	2012-10-21		Rating	2114.56
Round	Color	Result	Opponent
1	White	Win	Higuchi Fumiya	1579.88
2	Black	Win	Mitsumori Masao	2308.95
3	White	Loss	Tada Ayako	2262.82
4	White	Loss	Ishitani Shin-ichi	2333.37
50 Meijinsen Qualification East-Japan area 1st round
Date	2012-06-03		Rating	2101.70
Round	Color	Result	Opponent
1	White	Loss	Mitsumori Masao	2322.04
2	White	Loss	Iwano Fumio	2110.09
3	White	Loss	Ono Takayuki	2385.41
4	Black	Win	Maruta Hiroki	2066.48
4th Tohoku Championship
Date	2012-04-08		Rating	2098.31
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2837.99
2	White	Win	Maruta Hiroki	2061.22
3	White	Loss	Kobayashi Koichi	2185.21
4	White	Loss	Kusajima Masato	2164.15
5	White	Win	Hirono Masakazu	1965.16
12 Kanto Renju Emperor Tournament 1st round
Date	2011-10-23		Rating	2088.58
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2411.56
49 Meijinsen Qualification East-Japan area 1st round
Date	2011-06-12		Rating	2082.21
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2392.28
28th Kanto Championship
Date	2011-05-22		Rating	2081.42
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2511.14
2	White	Loss	Arai Kazumi	2333.30
3	White	Loss	Suzuki Rin	1965.65
4	White	Win	Maruta Hiroki	2079.84
5	White	Loss	Fujikawa Masaki	2065.06
11 Kanto Renju Emperor Tournament 1st round
Date	2010-10-31		Rating	2088.26
Round	Color	Result	Opponent
1	Black	Win	Kato Yasuhiro	2043.77
2	White	Loss	Okabe Hiroshi	2659.97
Meijinsen Qualification East-Japan area 1st round
Date	2010-06-27		Rating	2088.76
Round	Color	Result	Opponent
1	White	Loss	Fukui Nobuhiro	2307.43
2	White	Win	Arai Kazumi	2293.82
3	White	Loss	Kudomi Takahiro	2364.09
4	Black	Loss	Tada Ayako	2163.94
27th Kanto Championship
Date	2010-05-23		Rating	2088.95
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2822.63
2	White	Loss	Tomobe Katsuhiro	2171.20
5th All Japan Championship
Date	2010-03-21		Rating	2091.16
Round	Color	Result	Opponent
4	Black	Win	Kusajima Masato	2157.38
10 Kanto Renju Emperor Tournament 1st round
Date	2009-10-04		Rating	2089.63
Round	Color	Result	Opponent
1	White	Loss	Tanji Hiroki	2025.08
2	White	Loss	Tomobe Katsuhiro	2129.09
3	White	Win	Tanizaki Ryusuke	2086.99
4	Black	Win	Fujikawa Masaki	2034.41
26th Kanto Championship
Date	2009-05-17		Rating	2089.60
Round	Color	Result	Opponent
4	Black	Win	Matsuoka Teruo	1895.24
5	Black	Win	Kato Yasuhiro	2006.00
4th All Japan Championship
Date	2009-03-21		Rating	2086.93
Round	Color	Result	Opponent
4	White	Win	Suzuki Rin	1938.53
5	Black	Loss	Tanizaki Ryusuke	2103.29
6	Black	Loss	Nagao Noriaki	2257.02
9th Kanto Renju Emperor Tournament, 1st round
Date	2008-10-26		Rating	2084.98
Round	Color	Result	Opponent
1	Black	Draw	Tamada Yoichi	2249.24
2	Black	Win	Tada Ayako	2016.36
3	Black	Loss	Ono Takayuki	2376.05
4	White	Loss	Nakayama Tomoharu	2273.13
25th Kanto Championship
Date	2008-05-18		Rating	2080.30
Round	Color	Result	Opponent
3	White	Win	Tanizaki Ryusuke	2102.52
4	Black	Win	Kobayashi Koichi	2082.65
5	Black	Loss	Kudomi Takahiro	2314.12
3rd All Japan Championship
Date	2008-03-23		Rating	2075.23
Round	Color	Result	Opponent
1	White	Loss	Yamaguchi Yusui	2581.15
2	Black	Loss	Kato Yasuhiro	1973.54
3	White	Loss	Tadokoro Hosai	1909.49
4	Black	Loss	Fujikawa Masaki	2083.83
5	White	Loss	Nakayama Tomoharu	2227.26
6	Black	Draw	Tanizaki Ryusuke	2103.46
8 Kanto Renju Emperor Tournament 1st round
Date	2007-10-21		Rating	2085.96
Round	Color	Result	Opponent
1	White	Win	Takeuchi Shunsuke	1926.13
2	White	Win	Yamashita Daisuke	1895.12
3	White	Loss	Ishitani Shin-ichi	2369.12
4	White	Loss	Nakayama Tomoharu	2206.09
5	Black	Win	Matsuoka Teruo	1862.86
45th Meijinsen Qualification East-Japan area 1st round
Date	2007-06-17		Rating	2092.36
Round	Color	Result	Opponent
1	Black	Win	Tanizaki Ryusuke	2116.11
2	Black	Loss	Isobe Taizan	2405.90
3	White	Loss	Iwano Fumio	2138.88
4	White	Win	Hara Masao	2037.89
7th Kanto Renju Emperor Tournament - 1st round
Date	2006-10-15		Rating	2097.88
Round	Color	Result	Opponent
1	Black	Win	Matsuoka Teruo	1848.83
2	White	Loss	Maruta Hiroki	1994.29
3	Black	Win	Fujikawa Masaki	2046.15
4	Black	Loss	Hara Masao	2067.39
5	Black	Win	Tanizaki Ryusuke	2108.29
Meijin-sen Qual, East Japan area 1st round
Date	2006-06-18		Rating	2101.06
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2317.16
2	Black	Loss	Arita Nobuyoshi	2338.85
3	White	Loss	Ono Takayuki	2286.67
4	Black	Loss	Hara Masao	2062.84
23rd Kanto Championship
Date	2006-05-21		Rating	2104.38
Round	Color	Result	Opponent
1	White	Win	Iwano Fumio	2083.00
2	Black	Loss	Mitsumori Masao	2241.33
3	Black	Win	Tadokoro Hosai	1920.34
4	Black	Loss	Nakamura Shigeru	2809.13
5	White	Loss	Hara Masao	2062.74
1st All Japan Championship
Date	2006-03-26		Rating	2111.70
Round	Color	Result	Opponent
4	White	Win	Tadokoro Hosai	1918.05
5	Black	Win	Kato Yasuhiro	2029.93
6	White	Win	Tomobe Katsuhiro	2070.06
6th Kanto Renju Emperor Tournament - 1st round
Date	2005-10-22		Rating	2119.62
Round	Color	Result	Opponent
1	Black	Win	Iwano Fumio	2062.73
2	White	Loss	Itami Yoshiyuki	2163.31
3	Black	Loss	Tomobe Katsuhiro	2062.35
4	White	Loss	Arita Nobuyoshi	2319.21
43rd Meijinsen Qualification: East Japan 1st round
Date	2005-06-12		Rating	2134.62
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2265.87
2	White	Win	Tanno Yoshitaka	2084.09
3	White	Loss	Nagao Noriaki	2216.62
4	Black	Loss	Itami Yoshiyuki	2168.26
22nd Kanto Championship
Date	2005-05-22		Rating	2138.14
Round	Color	Result	Opponent
1	White	Win	Ishizaki Masatoshi	1907.19
2	Black	Loss	Kawamura Norihiko	2655.32
3	Black	Win	Sasaki Miyu	1949.33
4	White	Win	Koyama Jun	2263.52
5	White	Loss	Ishitani Shin-ichi	2371.62
Japan WC Qualification tournament
Date	2005-04-03		Rating	2143.16
Round	Color	Result	Opponent
4	White	Win	Tanizaki Ryusuke	2065.56
5	Black	Win	Kato Yasuhiro	2012.46
6	White	Loss	Kubo Izumi	2147.64
5th Kanto Renju Emperor Tournament - 1st round
Date	2004-11-28		Rating	2154.04
Round	Color	Result	Opponent
1	Black	Loss	Sato Koichi	1985.46
2	White	Win	Sasaki Miyu	1943.58
3	Black	Win	Maruta Hiroki	1951.28
4	White	Win	Matsuoka Teruo	1869.45
42nd Meijinsen Qualification: East Japan 1st round
Date	2004-06-13		Rating	2169.75
Round	Color	Result	Opponent
4	Black	Loss	Sano Hiroyuki	2150.77
4th Kanto Renju Emperor Tournament - 2nd round
Date	2003-11-30		Rating	2195.75
Round	Color	Result	Opponent
	White	Win	Nagao Noriaki	2261.86
	White	Win	Mitsumori Masao	2250.23
	Black	Loss	Isobe Taizan	2404.02
	Black	Loss	Yamaguchi Yusui	2563.60
	Black	Loss	Okabe Hiroshi	2526.21
4th Kanto Renju Emperor Tournament - 1st round
Date	2003-11-16		Rating	2196.87
Round	Color	Result	Opponent
1	Black	Win	Yamauchi Yasuhiro	1800.02
2	White	Win	Nagao Noriaki	2264.57
3	White	Draw	Yamaguchi Yusui	2562.31
4	White	Win	Kubo Izumi	2190.54
41th Meijinsen Qualification: East Japan 1st round
Date	2003-06-08		Rating	2191.05
Round	Color	Result	Opponent
1	White	Loss	Sano Hiroyuki	2183.53
2	White	Win	Mitsumori Masao	2269.77
3	White	Loss	Sato Kiyotomi	2293.27
4	Black	Draw	Kubo Izumi	2196.35
40th Meijinsen Qualification: East Japan 1st round
Date	2002-06-02		Rating	2184.51
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2421.55
2	Black	Loss	Kato Yasuhiro	2067.35
3	White	Win	Ohno Syunzo	1979.04
4	Black	Win	Sato Takuma	2077.27
38th Meijinsen Qualification: East Japan 1st round
Date	2000-06-04		Rating	2186.88
Round	Color	Result	Opponent
1	Black	Win	Sunagawa Shouki	2188.40
2	White	Win	Mitsumori Masao	2276.00
3	White	Loss	Kudomi Takahiro	2330.23
4	White	Loss	Isobe Taizan	2424.55
Kanto Championship
Date	2000-05-14		Rating	2185.98
Round	Color	Result	Opponent
1	White	Loss	Nakamura Shigeru	2729.96
2	White	Loss	Hara Masao	2105.59
3	Black	Win	Tadokoro Hosai	1962.68
4	Black	Win	Kato Yasuhiro	2036.74
36 Suiseisen Tournament 1st round
Date	1996-03-01		Rating	2136.45
Round	Color	Result	Opponent
4	White	Win	Tanuma Akira	1844.89