Maruta Koji (丸田光治)

Place: Tokyo, Japan

Rating: 2126.16, Std: 95.96, Rank: 416

First game: 1996-03-01, Last game: 2023-01-29

Top rating: 2197.28 (2003-11-16)

Games: 233, Wins: 92, Draws: 8, Losses: 133

Gy1: 13, Gy2: 22, Gy5: 56

23 Kanto Renju Emperor Tournament 2nd round
Date	2023-01-29		Rating	2126.16
Round	Color	Result	Opponent
1	Black	Loss	Kamiya Shunsuke	2789.17
2	White	Loss	Fujita Maiko	2380.43
3	White	Loss	Yokoyama Shota	2427.15
4	White	Loss	Inoue Fumiya	2485.37
5	White	Loss	Okabe Hiroshi	2606.53
23 Renju Emperor Tournament Kanto area 1st round
Date	2022-11-06		Rating	2129.48
Round	Color	Result	Opponent
2	White	Win	Kasahara Reiko	1609.46
3	White	Win	Tomobe Katsuhiro	2110.43
4	Black	Win	Tanaka Shotaro	2241.62
39 Kanto Championship
Date	2022-07-31		Rating	2124.79
Round	Color	Result	Opponent
2	White	Win	Li Haoyang	1929.01
3	White	Loss	Ishitani Shin-ichi	2312.47
Special Tournament
Date	2022-04-10		Rating	2119.50
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2358.93
2	White	Loss	Inoue Fumiya	2462.77
3	White	Win	Maruta Hiroki	2151.73
38 Kanto Championship
Date	2021-08-08		Rating	2103.88
Round	Color	Result	Opponent
1	White	Loss	Inoue Fumiya	2450.31
2	White	Win	Kobayashi Nanako	1969.67
3	White	Win	Fujita Maiko	2311.62
16th All Japan Championship
Date	2021-03-28		Rating	2085.88
Round	Color	Result	Opponent
1	White	Loss	Makino Mitsunori	2496.19
2	White	Loss	Ishitani Shin-ichi	2306.32
3	White	Loss	Yoshimoto Yuta	2191.32
4	White	Loss	Kawaai Hitoshi	1977.39
5	White	Loss	Suenaga Daiki	2234.60
6	Black	Win	Maruta Hiroki	2176.56
24th New Year(Mikami)Cup
Date	2021-01-29		Rating	2082.26
Round	Color	Result	Opponent
S1	Black	Win	Maruta Hiroki	2175.90
S2	White	Loss	Makino Mitsunori	2490.17
S3	White	Loss	Okabe Hiroshi	2666.79
S4	Black	Loss	Ono Takayuki	2340.62
S5	White	Loss	Ishitani Shin-ichi	2317.64
21 Renju Emperor Tournament Kanto area 1st round
Date	2020-11-15		Rating	2076.90
Round	Color	Result	Opponent
1	White	Loss	Kawaai Hitoshi	1976.09
2	White	Loss	Suenaga Daiki	2235.65
3	White	Loss	Shimura Hiroki	1966.55
4	White	Win	Kasahara Reiko	1632.82
37 Kanto Championship
Date	2020-08-10		Rating	2080.84
Round	Color	Result	Opponent
3	White	Win	Okada Akihiro	1865.63
5	Black	Loss	Kato Yasuhiro	2054.07
6	Black	Win	Shimura Hiroki	1943.61
58 Meijinsen Qualification Kanto area 1st round
Date	2020-06-21		Rating	2082.88
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2316.73
2	White	Win	Ito Midori	1654.90
20 Renju Emperor Tournament Kanto area 1st round
Date	2019-11-10		Rating	2094.15
Round	Color	Result	Opponent
2	White	Win	Shibata Satoru	1770.49
3	White	Loss	Ishitani Shin-ichi	2330.79
4	White	Win	Tomobe Katsuhiro	2103.29
36 Kanto Championship
Date	2019-07-28		Rating	2095.97
Round	Color	Result	Opponent
5	White	Win	Shibata Satoru	1767.80
6	White	Loss	Miyamoto Syunju	2225.46
57 Meijinsen Qualification East Japan area 2nd round
Date	2019-06-23		Rating	2097.08
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2202.82
2	White	Loss	Koyama Jun	2550.78
3	Black	Win	Maruta Hiroki	2141.36
4	White	Loss	Ono Takayuki	2348.52
5	White	Draw	Inoue Fumiya	2376.70
57 Meijinsen Qualification Kanto area 1st round
Date	2019-05-12		Rating	2097.51
Round	Color	Result	Opponent
1	White	Win	Inoue Fumiya	2376.79
2	White	Win	Maruta Hiroki	2142.32
3	White	Loss	Ono Takayuki	2350.29
4	Black	Loss	Mitsumori Masao	2276.23
13 Middle-dan Players Tournament
Date	2018-08-12		Rating	2081.20
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2243.41
2	White	Loss	Miyamoto Syunju	2212.04
4	White	Loss	Kusajima Masato	2243.41
5	White	Loss	Miyamoto Syunju	2212.04
35 Kanto Championship
Date	2018-07-16		Rating	2082.01
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2776.37
56 Meijinsen Qualification Kanto area 1st round
Date	2018-05-13		Rating	2084.00
Round	Color	Result	Opponent
1	White	Loss	Sato Kiyotomi	2399.12
18 Kanto Renju Emperor Tournament 1st round
Date	2017-11-01		Rating	2092.01
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2667.19
2	Black	Win	Koyama Akihiro	1930.79
3	White	Loss	Ishitani Shin-ichi	2351.32
4	White	Loss	Maruta Hiroki	2104.20
34 Kanto Championship
Date	2017-07-16		Rating	2099.85
Round	Color	Result	Opponent
1	White	Win	Matsumoto Hiro	1707.35
2	Black	Loss	Ishitani Shin-ichi	2350.58
3	White	Loss	Ishima Ryoma	2114.74
12th All Japan Championship
Date	2017-03-26		Rating	2112.76
Round	Color	Result	Opponent
1	White	Draw	Iio Yoshihiro	2495.28
2	White	Loss	Tachi Masaya	2489.30
3	Black	Draw	Nishida Toshio	2054.84
4	Black	Loss	Ono Takayuki	2323.55
5	White	Win	Sakamoto Hirouji	2236.05
6	White	Loss	Fujita Yudai	2435.42
17 Kanto Renju Emperor Tournament 2nd round
Date	2016-12-10		Rating	2120.89
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2734.67
2	White	Loss	Okabe Hiroshi	2665.77
3	Black	Loss	Sato Kiyotomi	2448.08
4	White	Loss	Ishitani Shin-ichi	2354.98
5	White	Loss	Nakamura Shigeru	2901.82
17 Kanto Renju Emperor Tournament 1st round
Date	2016-11-23		Rating	2122.72
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2665.00
2	Black	Win	Demachi Koichiro	1899.20
3	White	Loss	Sato Kiyotomi	2449.14
4	White	Win	Maruta Hiroki	2083.68
ex1	Black	Loss	Iwano Fumio	2225.12
33 Kanto Championship
Date	2016-07-31		Rating	2134.02
Round	Color	Result	Opponent
1	White	Win	Cho Enkun	1634.22
2	Black	Loss	Okabe Hiroshi	2671.73
3	White	Win	Kato Yasuhiro	2019.90
54 Meijinsen Qualification Kanto area 1st round
Date	2016-05-22		Rating	2139.07
Round	Color	Result	Opponent
2	Black	Loss	Sato Kiyotomi	2464.29
3	White	Win	Iwano Fumio	2206.62
4	Black	Loss	Mitsumori Masao	2306.12
11th All Japan Championship
Date	2016-01-11		Rating	2146.77
Round	Color	Result	Opponent
1	Black	Loss	Kamiya Shunsuke	2669.53
2	Black	Draw	Chigira Makoto	2000.22
3	White	Loss	Fujita Yudai	2402.04
5	White	Win	Kato Yasuhiro	2016.31
6	White	Win	Suzuki Rin	1915.48
Kanto Championship
Date	2015-07-20		Rating	2155.74
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2710.36
4	White	Win	Hashimoto Takuya	1986.04
5	Black	Win	Kato Yasuhiro	2028.23
6	White	Win	Fujikawa Masaki	2069.40
10th All Japan Championship
Date	2015-03-29		Rating	2153.68
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2625.79
2	White	Win	Fujikawa Masaki	2059.94
31th Kanto Championship
Date	2014-05-11		Rating	2140.48
Round	Color	Result	Opponent
2	White	Loss	Tamura Kazumasa	2482.48
3	White	Loss	Tomobe Katsuhiro	2088.29
4	White	Win	Maruta Hiroki	2073.26
11th Middle-dan players Tournament
Date	2013-08-17		Rating	2135.35
Round	Color	Result	Opponent
1	White	Loss	Kashihara Akihiko	2296.77
2	Black	Loss	Kato Yasuhiro	2091.12
3	White	Win	Maruta Hiroki	2098.13
4	White	Win	Kubo Izumi	2060.86
5	Black	Win	Miyagawa Junzo	2183.47
6	White	Loss	Nakayama Tomoharu	2612.34
51 Meijinsen Qualification East-Japan area 1st round
Date	2013-06-16		Rating	2131.85
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2361.27
29th Kanto Championship
Date	2013-05-12		Rating	2130.41
Round	Color	Result	Opponent
3	Black	Loss	Suzuki Rin	2008.03
4	White	Win	Nakamura Souta	2073.74
5	White	Win	Tada Ayako	2255.04
13 Kanto Renju Emperor Tournament 1st round
Date	2012-10-21		Rating	2115.76
Round	Color	Result	Opponent
1	White	Win	Higuchi Fumiya	1580.40
2	Black	Win	Mitsumori Masao	2309.75
3	White	Loss	Tada Ayako	2263.60
4	White	Loss	Ishitani Shin-ichi	2334.00
50 Meijinsen Qualification East-Japan area 1st round
Date	2012-06-03		Rating	2102.79
Round	Color	Result	Opponent
1	White	Loss	Mitsumori Masao	2322.79
2	White	Loss	Iwano Fumio	2110.89
3	White	Loss	Ono Takayuki	2386.13
4	Black	Win	Maruta Hiroki	2067.24
4th Tohoku Championship
Date	2012-04-08		Rating	2099.36
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2838.62
2	White	Win	Maruta Hiroki	2061.95
3	White	Loss	Kobayashi Koichi	2185.77
4	White	Loss	Kusajima Masato	2164.70
5	White	Win	Hirono Masakazu	1965.56
12 Kanto Renju Emperor Tournament 1st round
Date	2011-10-23		Rating	2089.53
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2412.24
49 Meijinsen Qualification East-Japan area 1st round
Date	2011-06-12		Rating	2083.08
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2392.94
28th Kanto Championship
Date	2011-05-22		Rating	2082.29
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2511.76
2	White	Loss	Arai Kazumi	2333.94
3	White	Loss	Suzuki Rin	1966.27
4	White	Win	Maruta Hiroki	2080.48
5	White	Loss	Fujikawa Masaki	2065.71
11 Kanto Renju Emperor Tournament 1st round
Date	2010-10-31		Rating	2089.04
Round	Color	Result	Opponent
1	Black	Win	Kato Yasuhiro	2044.34
2	White	Loss	Okabe Hiroshi	2660.57
Meijinsen Qualification East-Japan area 1st round
Date	2010-06-27		Rating	2089.49
Round	Color	Result	Opponent
1	White	Loss	Fukui Nobuhiro	2307.99
2	White	Win	Arai Kazumi	2294.41
3	White	Loss	Kudomi Takahiro	2364.66
4	Black	Loss	Tada Ayako	2164.51
27th Kanto Championship
Date	2010-05-23		Rating	2089.66
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2823.22
2	White	Loss	Tomobe Katsuhiro	2171.75
5th All Japan Championship
Date	2010-03-21		Rating	2091.85
Round	Color	Result	Opponent
4	Black	Win	Kusajima Masato	2157.88
10 Kanto Renju Emperor Tournament 1st round
Date	2009-10-04		Rating	2090.27
Round	Color	Result	Opponent
1	White	Loss	Tanji Hiroki	2025.55
2	White	Loss	Tomobe Katsuhiro	2129.58
3	White	Win	Tanizaki Ryusuke	2087.58
4	Black	Win	Fujikawa Masaki	2034.91
26th Kanto Championship
Date	2009-05-17		Rating	2090.20
Round	Color	Result	Opponent
4	Black	Win	Matsuoka Teruo	1895.72
5	Black	Win	Kato Yasuhiro	2006.47
4th All Japan Championship
Date	2009-03-21		Rating	2087.51
Round	Color	Result	Opponent
4	White	Win	Suzuki Rin	1939.01
5	Black	Loss	Tanizaki Ryusuke	2103.82
6	Black	Loss	Nagao Noriaki	2257.51
9th Kanto Renju Emperor Tournament, 1st round
Date	2008-10-26		Rating	2085.53
Round	Color	Result	Opponent
1	Black	Draw	Tamada Yoichi	2249.72
2	Black	Win	Tada Ayako	2016.85
3	Black	Loss	Ono Takayuki	2376.56
4	White	Loss	Nakayama Tomoharu	2273.62
25th Kanto Championship
Date	2008-05-18		Rating	2080.82
Round	Color	Result	Opponent
3	White	Win	Tanizaki Ryusuke	2103.00
4	Black	Win	Kobayashi Koichi	2083.07
5	Black	Loss	Kudomi Takahiro	2314.60
3rd All Japan Championship
Date	2008-03-23		Rating	2075.74
Round	Color	Result	Opponent
1	White	Loss	Yamaguchi Yusui	2581.68
2	Black	Loss	Kato Yasuhiro	1973.97
3	White	Loss	Tadokoro Hosai	1909.90
4	Black	Loss	Fujikawa Masaki	2084.26
5	White	Loss	Nakayama Tomoharu	2227.73
6	Black	Draw	Tanizaki Ryusuke	2103.93
8 Kanto Renju Emperor Tournament 1st round
Date	2007-10-21		Rating	2086.45
Round	Color	Result	Opponent
1	White	Win	Takeuchi Shunsuke	1926.51
2	White	Win	Yamashita Daisuke	1895.41
3	White	Loss	Ishitani Shin-ichi	2369.59
4	White	Loss	Nakayama Tomoharu	2206.55
5	Black	Win	Matsuoka Teruo	1863.29
45th Meijinsen Qualification East-Japan area 1st round
Date	2007-06-17		Rating	2092.84
Round	Color	Result	Opponent
1	Black	Win	Tanizaki Ryusuke	2116.55
2	Black	Loss	Isobe Taizan	2406.40
3	White	Loss	Iwano Fumio	2139.32
4	White	Win	Hara Masao	2038.28
7th Kanto Renju Emperor Tournament - 1st round
Date	2006-10-15		Rating	2098.33
Round	Color	Result	Opponent
1	Black	Win	Matsuoka Teruo	1849.24
2	White	Loss	Maruta Hiroki	1994.71
3	Black	Win	Fujikawa Masaki	2046.56
4	Black	Loss	Hara Masao	2067.78
5	Black	Win	Tanizaki Ryusuke	2108.72
Meijin-sen Qual, East Japan area 1st round
Date	2006-06-18		Rating	2101.50
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2317.60
2	Black	Loss	Arita Nobuyoshi	2339.30
3	White	Loss	Ono Takayuki	2287.12
4	Black	Loss	Hara Masao	2063.24
23rd Kanto Championship
Date	2006-05-21		Rating	2104.81
Round	Color	Result	Opponent
1	White	Win	Iwano Fumio	2083.41
2	Black	Loss	Mitsumori Masao	2241.81
3	Black	Win	Tadokoro Hosai	1920.73
4	Black	Loss	Nakamura Shigeru	2809.73
5	White	Loss	Hara Masao	2063.14
1st All Japan Championship
Date	2006-03-26		Rating	2112.13
Round	Color	Result	Opponent
4	White	Win	Tadokoro Hosai	1918.44
5	Black	Win	Kato Yasuhiro	2030.33
6	White	Win	Tomobe Katsuhiro	2070.45
6th Kanto Renju Emperor Tournament - 1st round
Date	2005-10-22		Rating	2120.04
Round	Color	Result	Opponent
1	Black	Win	Iwano Fumio	2063.12
2	White	Loss	Itami Yoshiyuki	2163.71
3	Black	Loss	Tomobe Katsuhiro	2062.74
4	White	Loss	Arita Nobuyoshi	2319.64
43rd Meijinsen Qualification: East Japan 1st round
Date	2005-06-12		Rating	2135.03
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2266.28
2	White	Win	Tanno Yoshitaka	2084.47
3	White	Loss	Nagao Noriaki	2217.02
4	Black	Loss	Itami Yoshiyuki	2168.66
22nd Kanto Championship
Date	2005-05-22		Rating	2138.55
Round	Color	Result	Opponent
1	White	Win	Ishizaki Masatoshi	1907.54
2	Black	Loss	Kawamura Norihiko	2655.87
3	Black	Win	Sasaki Miyu	1949.69
4	White	Win	Koyama Jun	2263.92
5	White	Loss	Ishitani Shin-ichi	2372.06
Japan WC Qualification tournament
Date	2005-04-03		Rating	2143.57
Round	Color	Result	Opponent
4	White	Win	Tanizaki Ryusuke	2065.94
5	Black	Win	Kato Yasuhiro	2012.85
6	White	Loss	Kubo Izumi	2148.04
5th Kanto Renju Emperor Tournament - 1st round
Date	2004-11-28		Rating	2154.45
Round	Color	Result	Opponent
1	Black	Loss	Sato Koichi	1985.82
2	White	Win	Sasaki Miyu	1943.92
3	Black	Win	Maruta Hiroki	1951.64
4	White	Win	Matsuoka Teruo	1869.81
42nd Meijinsen Qualification: East Japan 1st round
Date	2004-06-13		Rating	2170.16
Round	Color	Result	Opponent
4	Black	Loss	Sano Hiroyuki	2151.12
4th Kanto Renju Emperor Tournament - 2nd round
Date	2003-11-30		Rating	2196.16
Round	Color	Result	Opponent
	White	Win	Nagao Noriaki	2262.19
	White	Win	Mitsumori Masao	2250.78
	Black	Loss	Isobe Taizan	2404.50
	Black	Loss	Yamaguchi Yusui	2564.08
	Black	Loss	Okabe Hiroshi	2526.66
4th Kanto Renju Emperor Tournament - 1st round
Date	2003-11-16		Rating	2197.28
Round	Color	Result	Opponent
1	Black	Win	Yamauchi Yasuhiro	1800.18
2	White	Win	Nagao Noriaki	2264.89
3	White	Draw	Yamaguchi Yusui	2562.79
4	White	Win	Kubo Izumi	2190.93
41th Meijinsen Qualification: East Japan 1st round
Date	2003-06-08		Rating	2191.46
Round	Color	Result	Opponent
1	White	Loss	Sano Hiroyuki	2183.88
2	White	Win	Mitsumori Masao	2270.40
3	White	Loss	Sato Kiyotomi	2293.69
4	Black	Draw	Kubo Izumi	2196.74
40th Meijinsen Qualification: East Japan 1st round
Date	2002-06-02		Rating	2184.92
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2422.03
2	Black	Loss	Kato Yasuhiro	2067.71
3	White	Win	Ohno Syunzo	1979.38
4	Black	Win	Sato Takuma	2077.64
38th Meijinsen Qualification: East Japan 1st round
Date	2000-06-04		Rating	2187.28
Round	Color	Result	Opponent
1	Black	Win	Sunagawa Shouki	2189.02
2	White	Win	Mitsumori Masao	2276.55
3	White	Loss	Kudomi Takahiro	2330.80
4	White	Loss	Isobe Taizan	2425.01
Kanto Championship
Date	2000-05-14		Rating	2186.38
Round	Color	Result	Opponent
1	White	Loss	Nakamura Shigeru	2730.78
2	White	Loss	Hara Masao	2105.99
3	Black	Win	Tadokoro Hosai	1963.03
4	Black	Win	Kato Yasuhiro	2037.08
36 Suiseisen Tournament 1st round
Date	1996-03-01		Rating	2136.76
Round	Color	Result	Opponent
4	White	Win	Tanuma Akira	1844.95