Maruta Koji (丸田光治)

Place: Tokyo, Japan

Rating: 2095.95, Std: 102.22, Rank: 535

First game: 1996-03-01, Last game: 2023-07-09

Top rating: 2201.99 (2003-11-16)

Games: 237, Wins: 93, Draws: 8, Losses: 136

Gy1: 9, Gy2: 17, Gy5: 54

40 Kanto Championship
Date	2023-07-09		Rating	2095.95
Round	Color	Result	Opponent
1	Black	Loss	Tanaka Shotaro	2268.19
4	White	Win	Suzuki Yoshitaka	1917.02
17th All Japan Championship
Date	2023-03-19		Rating	2096.01
Round	Color	Result	Opponent
5	White	Loss	Matsuda Shoma	2273.54
6	White	Loss	Takazawa Nagayoshi	2248.29
23 Kanto Renju Emperor Tournament 2nd round
Date	2023-01-29		Rating	2098.07
Round	Color	Result	Opponent
1	Black	Loss	Kamiya Shunsuke	2799.82
2	White	Loss	Fujita Maiko	2360.36
3	White	Loss	Yokoyama Shota	2409.74
4	White	Loss	Inoue Fumiya	2473.52
5	White	Loss	Okabe Hiroshi	2632.60
23 Renju Emperor Tournament Kanto area 1st round
Date	2022-11-06		Rating	2104.65
Round	Color	Result	Opponent
2	White	Win	Kasahara Reiko	1651.16
3	White	Win	Tomobe Katsuhiro	2056.96
4	Black	Win	Tanaka Shotaro	2269.43
39 Kanto Championship
Date	2022-07-31		Rating	2103.45
Round	Color	Result	Opponent
2	White	Win	Li Haoyang	1929.48
3	White	Loss	Ishitani Shin-ichi	2303.08
Special Tournament
Date	2022-04-10		Rating	2101.84
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2353.50
2	White	Loss	Inoue Fumiya	2457.92
3	White	Win	Maruta Hiroki	2156.23
38 Kanto Championship
Date	2021-08-08		Rating	2093.34
Round	Color	Result	Opponent
1	White	Loss	Inoue Fumiya	2450.21
2	White	Win	Kobayashi Nanako	1974.30
3	White	Win	Fujita Maiko	2313.12
16th All Japan Championship
Date	2021-03-28		Rating	2078.85
Round	Color	Result	Opponent
1	White	Loss	Makino Mitsunori	2505.53
2	White	Loss	Ishitani Shin-ichi	2309.79
3	White	Loss	Yoshimoto Yuta	2197.51
4	White	Loss	Kawaai Hitoshi	1975.74
5	White	Loss	Suenaga Daiki	2241.95
6	Black	Win	Maruta Hiroki	2180.78
24th New Year(Mikami)Cup
Date	2021-01-29		Rating	2076.43
Round	Color	Result	Opponent
S1	Black	Win	Maruta Hiroki	2180.20
S2	White	Loss	Makino Mitsunori	2499.24
S3	White	Loss	Okabe Hiroshi	2677.63
S4	Black	Loss	Ono Takayuki	2347.47
S5	White	Loss	Ishitani Shin-ichi	2321.62
21 Renju Emperor Tournament Kanto area 1st round
Date	2020-11-15		Rating	2072.40
Round	Color	Result	Opponent
1	White	Loss	Kawaai Hitoshi	1975.89
2	White	Loss	Suenaga Daiki	2243.22
3	White	Loss	Shimura Hiroki	1972.07
4	White	Win	Kasahara Reiko	1659.71
37 Kanto Championship
Date	2020-08-10		Rating	2077.72
Round	Color	Result	Opponent
3	White	Win	Okada Akihiro	1883.06
5	Black	Loss	Kato Yasuhiro	2056.53
6	Black	Win	Shimura Hiroki	1949.09
58 Meijinsen Qualification Kanto area 1st round
Date	2020-06-21		Rating	2080.32
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2322.65
2	White	Win	Ito Midori	1692.20
20 Renju Emperor Tournament Kanto area 1st round
Date	2019-11-10		Rating	2093.68
Round	Color	Result	Opponent
2	White	Win	Shibata Satoru	1776.34
3	White	Loss	Ishitani Shin-ichi	2337.11
4	White	Win	Tomobe Katsuhiro	2095.68
36 Kanto Championship
Date	2019-07-28		Rating	2096.48
Round	Color	Result	Opponent
5	White	Win	Shibata Satoru	1773.61
6	White	Loss	Miyamoto Syunju	2234.41
57 Meijinsen Qualification East Japan area 2nd round
Date	2019-06-23		Rating	2097.88
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2211.32
2	White	Loss	Koyama Jun	2559.06
3	Black	Win	Maruta Hiroki	2146.35
4	White	Loss	Ono Takayuki	2354.99
5	White	Draw	Inoue Fumiya	2382.72
57 Meijinsen Qualification Kanto area 1st round
Date	2019-05-12		Rating	2098.57
Round	Color	Result	Opponent
1	White	Win	Inoue Fumiya	2382.75
2	White	Win	Maruta Hiroki	2147.34
3	White	Loss	Ono Takayuki	2356.76
4	Black	Loss	Mitsumori Masao	2281.07
13 Middle-dan Players Tournament
Date	2018-08-12		Rating	2083.59
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2250.67
2	White	Loss	Miyamoto Syunju	2218.97
4	White	Loss	Kusajima Masato	2250.67
5	White	Loss	Miyamoto Syunju	2218.97
35 Kanto Championship
Date	2018-07-16		Rating	2084.48
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2785.05
56 Meijinsen Qualification Kanto area 1st round
Date	2018-05-13		Rating	2086.67
Round	Color	Result	Opponent
1	White	Loss	Sato Kiyotomi	2405.78
18 Kanto Renju Emperor Tournament 1st round
Date	2017-11-01		Rating	2095.24
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2675.30
2	Black	Win	Koyama Akihiro	1934.08
3	White	Loss	Ishitani Shin-ichi	2357.93
4	White	Loss	Maruta Hiroki	2108.75
34 Kanto Championship
Date	2017-07-16		Rating	2103.35
Round	Color	Result	Opponent
1	White	Win	Matsumoto Hiro	1709.76
2	Black	Loss	Ishitani Shin-ichi	2357.07
3	White	Loss	Ishima Ryoma	2118.16
12th All Japan Championship
Date	2017-03-26		Rating	2116.52
Round	Color	Result	Opponent
1	White	Draw	Iio Yoshihiro	2502.15
2	White	Loss	Tachi Masaya	2498.19
3	Black	Draw	Nishida Toshio	2059.85
4	Black	Loss	Ono Takayuki	2329.55
5	White	Win	Sakamoto Suzan	2240.84
6	White	Loss	Fujita Yudai	2442.36
17 Kanto Renju Emperor Tournament 2nd round
Date	2016-12-10		Rating	2124.80
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2742.08
2	White	Loss	Okabe Hiroshi	2673.00
3	Black	Loss	Sato Kiyotomi	2454.32
4	White	Loss	Ishitani Shin-ichi	2361.35
5	White	Loss	Nakamura Shigeru	2909.04
17 Kanto Renju Emperor Tournament 1st round
Date	2016-11-23		Rating	2126.65
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2672.19
2	Black	Win	Demachi Koichiro	1903.65
3	White	Loss	Sato Kiyotomi	2455.35
4	White	Win	Maruta Hiroki	2088.04
ex1	Black	Loss	Iwano Fumio	2229.20
33 Kanto Championship
Date	2016-07-31		Rating	2138.04
Round	Color	Result	Opponent
1	White	Win	Cho Enkun	1636.44
2	Black	Loss	Okabe Hiroshi	2678.69
3	White	Win	Kato Yasuhiro	2023.97
54 Meijinsen Qualification Kanto area 1st round
Date	2016-05-22		Rating	2143.14
Round	Color	Result	Opponent
2	Black	Loss	Sato Kiyotomi	2470.31
3	White	Win	Iwano Fumio	2210.80
4	Black	Loss	Mitsumori Masao	2311.28
11th All Japan Championship
Date	2016-01-11		Rating	2150.92
Round	Color	Result	Opponent
1	Black	Loss	Kamiya Shunsuke	2676.30
2	Black	Draw	Chigira Makoto	2004.61
3	White	Loss	Fujita Yudai	2407.96
5	White	Win	Kato Yasuhiro	2020.56
6	White	Win	Suzuki Rin	1919.87
Kanto Championship
Date	2015-07-20		Rating	2159.96
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2716.76
4	White	Win	Hashimoto Takuya	1989.74
5	Black	Win	Kato Yasuhiro	2032.60
6	White	Win	Fujikawa Masaki	2073.86
10th All Japan Championship
Date	2015-03-29		Rating	2157.93
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2632.00
2	White	Win	Fujikawa Masaki	2064.39
31th Kanto Championship
Date	2014-05-11		Rating	2144.82
Round	Color	Result	Opponent
2	White	Loss	Tamura Kazumasa	2488.26
3	White	Loss	Tomobe Katsuhiro	2092.43
4	White	Win	Maruta Hiroki	2077.73
11th Middle-dan players Tournament
Date	2013-08-17		Rating	2139.74
Round	Color	Result	Opponent
1	White	Loss	Kashihara Akihiko	2301.43
2	Black	Loss	Kato Yasuhiro	2095.67
3	White	Win	Maruta Hiroki	2102.62
4	White	Win	Kubo Izumi	2065.26
5	Black	Win	Miyagawa Junzo	2188.55
6	White	Loss	Nakayama Tomoharu	2617.96
51 Meijinsen Qualification East-Japan area 1st round
Date	2013-06-16		Rating	2136.24
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2366.18
29th Kanto Championship
Date	2013-05-12		Rating	2134.81
Round	Color	Result	Opponent
3	Black	Loss	Suzuki Rin	2012.35
4	White	Win	Nakamura Souta	2078.02
5	White	Win	Tada Ayako	2259.62
13 Kanto Renju Emperor Tournament 1st round
Date	2012-10-21		Rating	2120.16
Round	Color	Result	Opponent
1	White	Win	Higuchi Fumiya	1583.43
2	Black	Win	Mitsumori Masao	2314.59
3	White	Loss	Tada Ayako	2268.14
4	White	Loss	Ishitani Shin-ichi	2338.96
50 Meijinsen Qualification East-Japan area 1st round
Date	2012-06-03		Rating	2107.18
Round	Color	Result	Opponent
1	White	Loss	Mitsumori Masao	2327.61
2	White	Loss	Iwano Fumio	2115.29
3	White	Loss	Ono Takayuki	2391.14
4	Black	Win	Maruta Hiroki	2071.65
4th Tohoku Championship
Date	2012-04-08		Rating	2103.74
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2844.04
2	White	Win	Maruta Hiroki	2066.34
3	White	Loss	Kobayashi Koichi	2190.21
4	White	Loss	Kusajima Masato	2169.41
5	White	Win	Hirono Masakazu	1969.85
12 Kanto Renju Emperor Tournament 1st round
Date	2011-10-23		Rating	2093.89
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2417.26
49 Meijinsen Qualification East-Japan area 1st round
Date	2011-06-12		Rating	2087.42
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2397.90
28th Kanto Championship
Date	2011-05-22		Rating	2086.62
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2516.71
2	White	Loss	Arai Kazumi	2338.51
3	White	Loss	Suzuki Rin	1970.45
4	White	Win	Maruta Hiroki	2084.81
5	White	Loss	Fujikawa Masaki	2069.93
11 Kanto Renju Emperor Tournament 1st round
Date	2010-10-31		Rating	2093.33
Round	Color	Result	Opponent
1	Black	Win	Kato Yasuhiro	2048.53
2	White	Loss	Okabe Hiroshi	2665.66
Meijinsen Qualification East-Japan area 1st round
Date	2010-06-27		Rating	2093.74
Round	Color	Result	Opponent
1	White	Loss	Fukui Nobuhiro	2312.45
2	White	Win	Arai Kazumi	2298.85
3	White	Loss	Kudomi Takahiro	2369.23
4	Black	Loss	Tada Ayako	2168.73
27th Kanto Championship
Date	2010-05-23		Rating	2093.91
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2828.14
2	White	Loss	Tomobe Katsuhiro	2175.92
5th All Japan Championship
Date	2010-03-21		Rating	2096.08
Round	Color	Result	Opponent
4	Black	Win	Kusajima Masato	2162.44
10 Kanto Renju Emperor Tournament 1st round
Date	2009-10-04		Rating	2094.46
Round	Color	Result	Opponent
1	White	Loss	Tanji Hiroki	2029.48
2	White	Loss	Tomobe Katsuhiro	2133.63
3	White	Win	Tanizaki Ryusuke	2091.61
4	Black	Win	Fujikawa Masaki	2038.94
26th Kanto Championship
Date	2009-05-17		Rating	2094.35
Round	Color	Result	Opponent
4	Black	Win	Matsuoka Teruo	1899.65
5	Black	Win	Kato Yasuhiro	2010.44
4th All Japan Championship
Date	2009-03-21		Rating	2091.66
Round	Color	Result	Opponent
4	White	Win	Suzuki Rin	1942.86
5	Black	Loss	Tanizaki Ryusuke	2107.82
6	Black	Loss	Nagao Noriaki	2261.95
9th Kanto Renju Emperor Tournament, 1st round
Date	2008-10-26		Rating	2089.65
Round	Color	Result	Opponent
1	Black	Draw	Tamada Yoichi	2254.19
2	Black	Win	Tada Ayako	2020.70
3	Black	Loss	Ono Takayuki	2380.89
4	White	Loss	Nakayama Tomoharu	2277.85
25th Kanto Championship
Date	2008-05-18		Rating	2084.91
Round	Color	Result	Opponent
3	White	Win	Tanizaki Ryusuke	2106.96
4	Black	Win	Kobayashi Koichi	2087.01
5	Black	Loss	Kudomi Takahiro	2318.89
3rd All Japan Championship
Date	2008-03-23		Rating	2079.82
Round	Color	Result	Opponent
1	White	Loss	Yamaguchi Yusui	2586.09
2	Black	Loss	Kato Yasuhiro	1977.84
3	White	Loss	Tadokoro Hosai	1913.75
4	Black	Loss	Fujikawa Masaki	2088.19
5	White	Loss	Nakayama Tomoharu	2231.85
6	Black	Draw	Tanizaki Ryusuke	2107.88
8 Kanto Renju Emperor Tournament 1st round
Date	2007-10-21		Rating	2090.51
Round	Color	Result	Opponent
1	White	Win	Takeuchi Shunsuke	1929.77
2	White	Win	Yamashita Daisuke	1898.04
3	White	Loss	Ishitani Shin-ichi	2374.04
4	White	Loss	Nakayama Tomoharu	2210.59
5	Black	Win	Matsuoka Teruo	1867.05
45th Meijinsen Qualification East-Japan area 1st round
Date	2007-06-17		Rating	2096.90
Round	Color	Result	Opponent
1	Black	Win	Tanizaki Ryusuke	2120.48
2	Black	Loss	Isobe Taizan	2410.46
3	White	Loss	Iwano Fumio	2143.27
4	White	Win	Hara Masao	2042.29
7th Kanto Renju Emperor Tournament - 1st round
Date	2006-10-15		Rating	2102.43
Round	Color	Result	Opponent
1	Black	Win	Matsuoka Teruo	1852.91
2	White	Loss	Maruta Hiroki	1998.52
3	Black	Win	Fujikawa Masaki	2050.31
4	Black	Loss	Hara Masao	2071.81
5	Black	Win	Tanizaki Ryusuke	2112.64
Meijin-sen Qual, East Japan area 1st round
Date	2006-06-18		Rating	2105.62
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2321.73
2	Black	Loss	Arita Nobuyoshi	2343.50
3	White	Loss	Ono Takayuki	2291.40
4	Black	Loss	Hara Masao	2067.29
23rd Kanto Championship
Date	2006-05-21		Rating	2108.94
Round	Color	Result	Opponent
1	White	Win	Iwano Fumio	2087.27
2	Black	Loss	Mitsumori Masao	2246.34
3	Black	Win	Tadokoro Hosai	1924.51
4	Black	Loss	Nakamura Shigeru	2814.67
5	White	Loss	Hara Masao	2067.17
1st All Japan Championship
Date	2006-03-26		Rating	2116.27
Round	Color	Result	Opponent
4	White	Win	Tadokoro Hosai	1922.22
5	Black	Win	Kato Yasuhiro	2034.17
6	White	Win	Tomobe Katsuhiro	2074.25
6th Kanto Renju Emperor Tournament - 1st round
Date	2005-10-22		Rating	2124.23
Round	Color	Result	Opponent
1	Black	Win	Iwano Fumio	2066.91
2	White	Loss	Itami Yoshiyuki	2167.77
3	Black	Loss	Tomobe Katsuhiro	2066.50
4	White	Loss	Arita Nobuyoshi	2323.86
43rd Meijinsen Qualification: East Japan 1st round
Date	2005-06-12		Rating	2139.28
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2270.43
2	White	Win	Tanno Yoshitaka	2088.84
3	White	Loss	Nagao Noriaki	2221.25
4	Black	Loss	Itami Yoshiyuki	2172.76
22nd Kanto Championship
Date	2005-05-22		Rating	2142.81
Round	Color	Result	Opponent
1	White	Win	Ishizaki Masatoshi	1910.97
2	Black	Loss	Kawamura Norihiko	2660.69
3	Black	Win	Sasaki Miyu	1953.24
4	White	Win	Koyama Jun	2268.07
5	White	Loss	Ishitani Shin-ichi	2376.64
Japan WC Qualification tournament
Date	2005-04-03		Rating	2147.85
Round	Color	Result	Opponent
4	White	Win	Tanizaki Ryusuke	2069.68
5	Black	Win	Kato Yasuhiro	2016.63
6	White	Loss	Kubo Izumi	2152.42
5th Kanto Renju Emperor Tournament - 1st round
Date	2004-11-28		Rating	2158.81
Round	Color	Result	Opponent
1	Black	Loss	Sato Koichi	1989.42
2	White	Win	Sasaki Miyu	1947.41
3	Black	Win	Maruta Hiroki	1955.14
4	White	Win	Matsuoka Teruo	1873.29
42nd Meijinsen Qualification: East Japan 1st round
Date	2004-06-13		Rating	2174.66
Round	Color	Result	Opponent
4	Black	Loss	Sano Hiroyuki	2154.97
4th Kanto Renju Emperor Tournament - 2nd round
Date	2003-11-30		Rating	2200.85
Round	Color	Result	Opponent
	White	Win	Nagao Noriaki	2266.74
	White	Win	Mitsumori Masao	2258.59
	Black	Loss	Isobe Taizan	2409.64
	Black	Loss	Yamaguchi Yusui	2569.22
	Black	Loss	Okabe Hiroshi	2531.38
4th Kanto Renju Emperor Tournament - 1st round
Date	2003-11-16		Rating	2201.99
Round	Color	Result	Opponent
1	Black	Win	Yamauchi Yasuhiro	1801.92
2	White	Win	Nagao Noriaki	2269.44
3	White	Draw	Yamaguchi Yusui	2567.93
4	White	Win	Kubo Izumi	2195.69
41th Meijinsen Qualification: East Japan 1st round
Date	2003-06-08		Rating	2196.28
Round	Color	Result	Opponent
1	White	Loss	Sano Hiroyuki	2187.72
2	White	Win	Mitsumori Masao	2279.12
3	White	Loss	Sato Kiyotomi	2298.02
4	Black	Draw	Kubo Izumi	2201.58
40th Meijinsen Qualification: East Japan 1st round
Date	2002-06-02		Rating	2189.89
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2427.07
2	Black	Loss	Kato Yasuhiro	2071.42
3	White	Win	Ohno Syunzo	1999.60
4	Black	Win	Sato Takuma	2081.76
38th Meijinsen Qualification: East Japan 1st round
Date	2000-06-04		Rating	2191.85
Round	Color	Result	Opponent
1	Black	Win	Sunagawa Shouki	2193.73
2	White	Win	Mitsumori Masao	2282.84
3	White	Loss	Kudomi Takahiro	2335.85
4	White	Loss	Isobe Taizan	2430.23
Kanto Championship
Date	2000-05-14		Rating	2190.93
Round	Color	Result	Opponent
1	White	Loss	Nakamura Shigeru	2737.16
2	White	Loss	Hara Masao	2109.88
3	Black	Win	Tadokoro Hosai	1966.70
4	Black	Win	Kato Yasuhiro	2040.54
36 Suiseisen Tournament 1st round
Date	1996-03-01		Rating	2140.31
Round	Color	Result	Opponent
4	White	Win	Tanuma Akira	1845.71