Maruta Koji (丸田光治)

Place: Tokyo, Japan

Rating: 2167.89, Std: 108.48, Rank: 480

First game: 1996-03-01, Last game: 2024-07-21

Top rating: 2230.38 (2003-11-16)

Games: 250, Wins: 98, Draws: 8, Losses: 144

Gy1: 11, Gy2: 22, Gy5: 53

41st Kanto Championship
Date	2024-07-21		Rating	2167.89
Round	Color	Result	Opponent
2	White	Win	Suzuki Yoshitaka	1947.99
3	White	Loss	Matsuda Shoma	2439.28
4	White	Loss	Takazawa Nagayoshi	2217.78
5	White	Win	Li Haoyang	2069.05
6	White	Loss	Tanaka Shotaro	2288.45
18th All Japan Championship
Date	2024-02-12		Rating	2174.17
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2390.80
2	Black	Win	Jang Eun Min	2334.12
3	White	Win	Ishitani Shin-ichi	2403.90
4	White	Loss	Park Woong-bae	2353.45
5	White	Win	Tanaka Shotaro	2291.82
6	White	Loss	Lee Ho June	2466.01
24 Kanto Renju Emperor Tournament Kanto area 1st round
Date	2023-11-19		Rating	2163.11
Round	Color	Result	Opponent
3	White	Loss	Tanaka Shotaro	2289.46
4	Black	Loss	Yoshikawa Tomoki	2147.33
40th Kanto Championship
Date	2023-07-09		Rating	2158.34
Round	Color	Result	Opponent
1	Black	Loss	Tanaka Shotaro	2301.45
4	White	Win	Suzuki Yoshitaka	1957.69
17th All Japan Championship
Date	2023-03-19		Rating	2155.14
Round	Color	Result	Opponent
5	White	Loss	Matsuda Shoma	2355.96
6	White	Loss	Takazawa Nagayoshi	2276.05
23 Kanto Renju Emperor Tournament 2nd round
Date	2023-01-29		Rating	2156.86
Round	Color	Result	Opponent
1	Black	Loss	Kamiya Shunsuke	2851.70
2	White	Loss	Fujita Maiko	2408.97
3	White	Loss	Yokoyama Shota	2453.97
4	White	Loss	Inoue Fumiya	2519.79
5	White	Loss	Okabe Hiroshi	2686.86
23 Renju Emperor Tournament Kanto area 1st round
Date	2022-11-06		Rating	2164.61
Round	Color	Result	Opponent
2	White	Win	Kasahara Reiko	1726.23
3	White	Win	Tomobe Katsuhiro	2084.29
4	Black	Win	Tanaka Shotaro	2311.40
39 Kanto Championship
Date	2022-07-31		Rating	2161.03
Round	Color	Result	Opponent
2	White	Win	Li Haoyang	1995.89
3	White	Loss	Ishitani Shin-ichi	2351.94
Special Tournament
Date	2022-04-10		Rating	2156.57
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2402.84
2	White	Loss	Inoue Fumiya	2503.81
3	White	Win	Maruta Hiroki	2209.15
38 Kanto Championship
Date	2021-08-08		Rating	2139.73
Round	Color	Result	Opponent
1	White	Loss	Inoue Fumiya	2497.77
2	White	Win	Kobayashi Nanako	2007.55
3	White	Win	Fujita Maiko	2345.97
16th All Japan Championship
Date	2021-03-28		Rating	2116.23
Round	Color	Result	Opponent
1	White	Loss	Makino Mitsunori	2563.82
2	White	Loss	Ishitani Shin-ichi	2345.12
3	White	Loss	Yoshimoto Yuta	2232.87
4	White	Loss	Kawaai Hitoshi	2007.12
5	White	Loss	Suenaga Daiki	2259.17
6	Black	Win	Maruta Hiroki	2225.02
24th New Year(Mikami)Cup
Date	2021-01-29		Rating	2111.95
Round	Color	Result	Opponent
S1	Black	Win	Maruta Hiroki	2223.64
S2	White	Loss	Makino Mitsunori	2557.10
S3	White	Loss	Okabe Hiroshi	2730.40
S4	Black	Loss	Ono Takayuki	2385.53
S5	White	Loss	Ishitani Shin-ichi	2360.98
21 Renju Emperor Tournament Kanto area 1st round
Date	2020-11-15		Rating	2104.81
Round	Color	Result	Opponent
1	White	Loss	Kawaai Hitoshi	2007.15
2	White	Loss	Suenaga Daiki	2264.43
3	White	Loss	Shimura Hiroki	1989.13
4	White	Win	Kasahara Reiko	1710.31
37 Kanto Championship
Date	2020-08-10		Rating	2111.62
Round	Color	Result	Opponent
3	White	Win	Okada Akihiro	1927.58
5	Black	Loss	Kato Yasuhiro	2079.17
6	Black	Win	Shimura Hiroki	1956.83
58 Meijinsen Qualification Kanto area 1st round
Date	2020-06-21		Rating	2115.12
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2365.79
2	White	Win	Ito Midori	1768.39
20 Renju Emperor Tournament Kanto area 1st round
Date	2019-11-10		Rating	2132.59
Round	Color	Result	Opponent
2	White	Win	Shibata Satoru	1819.90
3	White	Loss	Ishitani Shin-ichi	2372.26
4	White	Win	Tomobe Katsuhiro	2125.01
36 Kanto Championship
Date	2019-07-28		Rating	2135.76
Round	Color	Result	Opponent
5	White	Win	Shibata Satoru	1815.45
6	White	Loss	Miyamoto Syunju	2283.24
57 Meijinsen Qualification East Japan area 2nd round
Date	2019-06-23		Rating	2137.45
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2256.72
2	White	Loss	Koyama Jun	2604.15
3	Black	Win	Maruta Hiroki	2182.67
4	White	Loss	Ono Takayuki	2395.26
5	White	Draw	Inoue Fumiya	2422.31
57 Meijinsen Qualification Kanto area 1st round
Date	2019-05-12		Rating	2138.00
Round	Color	Result	Opponent
1	White	Win	Inoue Fumiya	2422.93
2	White	Win	Maruta Hiroki	2185.24
3	White	Loss	Ono Takayuki	2397.90
4	Black	Loss	Mitsumori Masao	2313.46
13 Middle-dan Players Tournament
Date	2018-08-12		Rating	2112.55
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2303.46
2	White	Loss	Miyamoto Syunju	2262.13
4	White	Loss	Kusajima Masato	2303.46
5	White	Loss	Miyamoto Syunju	2262.13
35 Kanto Championship
Date	2018-07-16		Rating	2113.32
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2834.36
56 Meijinsen Qualification Kanto area 1st round
Date	2018-05-13		Rating	2115.24
Round	Color	Result	Opponent
1	White	Loss	Sato Kiyotomi	2439.99
18 Kanto Renju Emperor Tournament 1st round
Date	2017-11-01		Rating	2123.92
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2718.95
2	Black	Win	Koyama Akihiro	1962.31
3	White	Loss	Ishitani Shin-ichi	2392.45
4	White	Loss	Maruta Hiroki	2140.78
34 Kanto Championship
Date	2017-07-16		Rating	2133.57
Round	Color	Result	Opponent
1	White	Win	Matsumoto Hiro	1726.03
2	Black	Loss	Ishitani Shin-ichi	2391.56
3	White	Loss	Ishima Ryoma	2160.76
12th All Japan Championship
Date	2017-03-26		Rating	2150.52
Round	Color	Result	Opponent
1	White	Draw	Iio Yoshihiro	2545.04
2	White	Loss	Tachi Masaya	2529.21
3	Black	Draw	Nishida Toshio	2088.62
4	Black	Loss	Ono Takayuki	2365.47
5	White	Win	Sakamoto Suzan	2269.88
6	White	Loss	Fujita Yudai	2486.16
17 Kanto Renju Emperor Tournament 2nd round
Date	2016-12-10		Rating	2160.32
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2781.96
2	White	Loss	Okabe Hiroshi	2713.48
3	Black	Loss	Sato Kiyotomi	2500.13
4	White	Loss	Ishitani Shin-ichi	2397.45
5	White	Loss	Nakamura Shigeru	2957.59
17 Kanto Renju Emperor Tournament 1st round
Date	2016-11-23		Rating	2162.66
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2712.17
2	Black	Win	Demachi Koichiro	1930.85
3	White	Loss	Sato Kiyotomi	2501.23
4	White	Win	Maruta Hiroki	2116.52
ex1	Black	Loss	Iwano Fumio	2268.00
33 Kanto Championship
Date	2016-07-31		Rating	2176.87
Round	Color	Result	Opponent
1	White	Win	Cho Enkun	1651.19
2	Black	Loss	Okabe Hiroshi	2720.87
3	White	Win	Kato Yasuhiro	2042.00
54 Meijinsen Qualification Kanto area 1st round
Date	2016-05-22		Rating	2183.03
Round	Color	Result	Opponent
2	Black	Loss	Sato Kiyotomi	2519.41
3	White	Win	Iwano Fumio	2240.72
4	Black	Loss	Mitsumori Masao	2353.34
11th All Japan Championship
Date	2016-01-11		Rating	2191.96
Round	Color	Result	Opponent
1	Black	Loss	Kamiya Shunsuke	2721.26
2	Black	Draw	Chigira Makoto	2027.83
3	White	Loss	Fujita Yudai	2445.78
5	White	Win	Kato Yasuhiro	2036.82
6	White	Win	Suzuki Rin	1922.02
Kanto Championship
Date	2015-07-20		Rating	2203.59
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2762.20
4	White	Win	Hashimoto Takuya	2010.24
5	Black	Win	Kato Yasuhiro	2052.93
6	White	Win	Fujikawa Masaki	2105.64
10th All Japan Championship
Date	2015-03-29		Rating	2200.21
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2674.33
2	White	Win	Fujikawa Masaki	2092.05
31th Kanto Championship
Date	2014-05-11		Rating	2180.27
Round	Color	Result	Opponent
2	White	Loss	Tamura Kazumasa	2521.22
3	White	Loss	Tomobe Katsuhiro	2111.18
4	White	Win	Maruta Hiroki	2101.99
11th Middle-dan players Tournament
Date	2013-08-17		Rating	2173.59
Round	Color	Result	Opponent
1	White	Loss	Kashihara Akihiko	2339.88
2	Black	Loss	Kato Yasuhiro	2132.30
3	White	Win	Maruta Hiroki	2135.57
4	White	Win	Kubo Izumi	2092.14
5	Black	Win	Miyagawa Junzo	2217.82
6	White	Loss	Nakayama Tomoharu	2649.86
51 Meijinsen Qualification East-Japan area 1st round
Date	2013-06-16		Rating	2168.62
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2391.35
29th Kanto Championship
Date	2013-05-12		Rating	2166.66
Round	Color	Result	Opponent
3	Black	Loss	Suzuki Rin	2047.81
4	White	Win	Nakamura Souta	2075.95
5	White	Win	Tada Ayako	2288.00
13 Kanto Renju Emperor Tournament 1st round
Date	2012-10-21		Rating	2146.81
Round	Color	Result	Opponent
1	White	Win	Higuchi Fumiya	1603.99
2	Black	Win	Mitsumori Masao	2346.16
3	White	Loss	Tada Ayako	2304.01
4	White	Loss	Ishitani Shin-ichi	2358.96
50 Meijinsen Qualification East-Japan area 1st round
Date	2012-06-03		Rating	2128.68
Round	Color	Result	Opponent
1	White	Loss	Mitsumori Masao	2363.46
2	White	Loss	Iwano Fumio	2132.31
3	White	Loss	Ono Takayuki	2429.47
4	Black	Win	Maruta Hiroki	2091.94
4th Tohoku Championship
Date	2012-04-08		Rating	2123.94
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2880.18
2	White	Win	Maruta Hiroki	2084.31
3	White	Loss	Kobayashi Koichi	2222.86
4	White	Loss	Kusajima Masato	2180.87
5	White	Win	Hirono Masakazu	1997.38
12 Kanto Renju Emperor Tournament 1st round
Date	2011-10-23		Rating	2110.16
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2440.86
49 Meijinsen Qualification East-Japan area 1st round
Date	2011-06-12		Rating	2101.17
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2418.02
28th Kanto Championship
Date	2011-05-22		Rating	2100.08
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2545.49
2	White	Loss	Arai Kazumi	2370.40
3	White	Loss	Suzuki Rin	1990.22
4	White	Win	Maruta Hiroki	2109.47
5	White	Loss	Fujikawa Masaki	2100.02
11 Kanto Renju Emperor Tournament 1st round
Date	2010-10-31		Rating	2109.46
Round	Color	Result	Opponent
1	Black	Win	Kato Yasuhiro	2067.67
2	White	Loss	Okabe Hiroshi	2695.35
Meijinsen Qualification East-Japan area 1st round
Date	2010-06-27		Rating	2109.59
Round	Color	Result	Opponent
1	White	Loss	Fukui Nobuhiro	2319.62
2	White	Win	Arai Kazumi	2316.26
3	White	Loss	Kudomi Takahiro	2396.55
4	Black	Loss	Tada Ayako	2192.93
27th Kanto Championship
Date	2010-05-23		Rating	2109.65
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2856.96
2	White	Loss	Tomobe Katsuhiro	2207.45
5th All Japan Championship
Date	2010-03-21		Rating	2112.39
Round	Color	Result	Opponent
4	Black	Win	Kusajima Masato	2167.89
10 Kanto Renju Emperor Tournament 1st round
Date	2009-10-04		Rating	2108.89
Round	Color	Result	Opponent
1	White	Loss	Tanji Hiroki	2052.29
2	White	Loss	Tomobe Katsuhiro	2152.60
3	White	Win	Tanizaki Ryusuke	2103.51
4	Black	Win	Fujikawa Masaki	2049.24
26th Kanto Championship
Date	2009-05-17		Rating	2107.69
Round	Color	Result	Opponent
4	Black	Win	Matsuoka Teruo	1908.22
5	Black	Win	Kato Yasuhiro	2023.67
4th All Japan Championship
Date	2009-03-21		Rating	2103.27
Round	Color	Result	Opponent
4	White	Win	Suzuki Rin	1951.63
5	Black	Loss	Tanizaki Ryusuke	2125.12
6	Black	Loss	Nagao Noriaki	2271.27
9th Kanto Renju Emperor Tournament, 1st round
Date	2008-10-26		Rating	2099.22
Round	Color	Result	Opponent
1	White	Draw	Tamada Yoichi	2267.66
2	White	Win	Tada Ayako	2005.38
3	White	Loss	Ono Takayuki	2408.76
4	White	Loss	Nakayama Tomoharu	2284.63
25th Kanto Championship
Date	2008-05-18		Rating	2091.30
Round	Color	Result	Opponent
3	White	Win	Tanizaki Ryusuke	2119.86
4	Black	Win	Kobayashi Koichi	2097.54
5	Black	Loss	Kudomi Takahiro	2336.07
3rd All Japan Championship
Date	2008-03-23		Rating	2083.24
Round	Color	Result	Opponent
1	White	Loss	Yamaguchi Yusui	2611.88
2	White	Loss	Kato Yasuhiro	1984.94
3	White	Loss	Tadokoro Hosai	1925.73
4	White	Loss	Fujikawa Masaki	2105.60
5	White	Loss	Nakayama Tomoharu	2230.18
6	White	Draw	Tanizaki Ryusuke	2120.61
8 Kanto Renju Emperor Tournament 1st round
Date	2007-10-21		Rating	2097.16
Round	Color	Result	Opponent
1	White	Win	Takeuchi Shunsuke	1936.52
2	White	Win	Yamashita Daisuke	1902.64
3	White	Loss	Ishitani Shin-ichi	2398.02
4	White	Loss	Nakayama Tomoharu	2201.95
5	Black	Win	Matsuoka Teruo	1871.71
45th Meijinsen Qualification East-Japan area 1st round
Date	2007-06-17		Rating	2105.19
Round	Color	Result	Opponent
1	Black	Win	Tanizaki Ryusuke	2136.75
2	Black	Loss	Isobe Taizan	2432.40
3	White	Loss	Iwano Fumio	2163.73
4	White	Win	Hara Masao	2052.84
7th Kanto Renju Emperor Tournament - 1st round
Date	2006-10-15		Rating	2109.31
Round	Color	Result	Opponent
1	Black	Win	Matsuoka Teruo	1855.71
2	White	Loss	Maruta Hiroki	2008.76
3	Black	Win	Fujikawa Masaki	2054.05
4	Black	Loss	Hara Masao	2091.41
5	Black	Win	Tanizaki Ryusuke	2127.11
Meijin-sen Qual, East Japan area 1st round
Date	2006-06-18		Rating	2111.72
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2337.56
2	Black	Loss	Arita Nobuyoshi	2367.63
3	White	Loss	Ono Takayuki	2300.12
4	Black	Loss	Hara Masao	2082.84
23rd Kanto Championship
Date	2006-05-21		Rating	2116.01
Round	Color	Result	Opponent
1	White	Win	Iwano Fumio	2094.30
2	Black	Loss	Mitsumori Masao	2257.60
3	Black	Win	Tadokoro Hosai	1933.75
4	Black	Loss	Nakamura Shigeru	2845.69
5	White	Loss	Hara Masao	2082.32
1st All Japan Championship
Date	2006-03-26		Rating	2125.46
Round	Color	Result	Opponent
4	White	Win	Tadokoro Hosai	1929.76
5	Black	Win	Kato Yasuhiro	2053.74
6	White	Win	Tomobe Katsuhiro	2089.63
6th Kanto Renju Emperor Tournament - 1st round
Date	2005-10-22		Rating	2132.82
Round	Color	Result	Opponent
1	Black	Win	Iwano Fumio	2070.34
2	White	Loss	Itami Yoshiyuki	2181.23
3	Black	Loss	Tomobe Katsuhiro	2079.62
4	White	Loss	Arita Nobuyoshi	2345.57
43rd Meijinsen Qualification: East Japan 1st round
Date	2005-06-12		Rating	2151.15
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2278.18
2	White	Win	Tanno Yoshitaka	2092.90
3	White	Loss	Nagao Noriaki	2228.79
4	Black	Loss	Itami Yoshiyuki	2188.47
22nd Kanto Championship
Date	2005-05-22		Rating	2155.81
Round	Color	Result	Opponent
1	White	Win	Ishizaki Masatoshi	1914.84
2	Black	Loss	Kawamura Norihiko	2691.34
3	Black	Win	Sasaki Miyu	1964.29
4	White	Win	Koyama Jun	2275.46
5	White	Loss	Ishitani Shin-ichi	2396.50
Japan WC Qualification tournament
Date	2005-04-03		Rating	2161.92
Round	Color	Result	Opponent
4	White	Win	Tanizaki Ryusuke	2073.31
5	Black	Win	Kato Yasuhiro	2024.11
6	White	Loss	Kubo Izumi	2169.65
5th Kanto Renju Emperor Tournament - 1st round
Date	2004-11-28		Rating	2174.89
Round	Color	Result	Opponent
1	Black	Loss	Sato Koichi	2011.18
2	White	Win	Sasaki Miyu	1954.69
3	Black	Win	Maruta Hiroki	1957.44
4	White	Win	Matsuoka Teruo	1886.79
42nd Meijinsen Qualification: East Japan 1st round
Date	2004-06-13		Rating	2194.37
Round	Color	Result	Opponent
4	Black	Loss	Sano Hiroyuki	2164.53
4th Kanto Renju Emperor Tournament - 2nd round
Date	2003-11-30		Rating	2228.92
Round	Color	Result	Opponent
	White	Win	Nagao Noriaki	2281.06
	White	Win	Mitsumori Masao	2266.39
	Black	Loss	Isobe Taizan	2423.26
	Black	Loss	Yamaguchi Yusui	2593.93
	Black	Loss	Okabe Hiroshi	2558.14
4th Kanto Renju Emperor Tournament - 1st round
Date	2003-11-16		Rating	2230.38
Round	Color	Result	Opponent
1	Black	Win	Yamauchi Yasuhiro	1804.81
2	White	Win	Nagao Noriaki	2284.64
3	White	Draw	Yamaguchi Yusui	2592.20
4	White	Win	Kubo Izumi	2218.70
41th Meijinsen Qualification: East Japan 1st round
Date	2003-06-08		Rating	2219.92
Round	Color	Result	Opponent
1	White	Loss	Sano Hiroyuki	2209.25
2	White	Win	Mitsumori Masao	2292.53
3	White	Loss	Sato Kiyotomi	2298.40
4	Black	Draw	Kubo Izumi	2224.69
40th Meijinsen Qualification: East Japan 1st round
Date	2002-06-02		Rating	2207.93
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2448.59
2	Black	Loss	Kato Yasuhiro	2098.10
3	White	Win	Ohno Syunzo	1994.96
4	Black	Win	Sato Takuma	2069.41
38th Meijinsen Qualification: East Japan 1st round
Date	2000-06-04		Rating	2209.95
Round	Color	Result	Opponent
1	Black	Win	Sunagawa Shouki	2212.05
2	White	Win	Mitsumori Masao	2293.87
3	White	Loss	Kudomi Takahiro	2354.80
4	White	Loss	Isobe Taizan	2455.26
Kanto Championship
Date	2000-05-14		Rating	2208.56
Round	Color	Result	Opponent
1	White	Loss	Nakamura Shigeru	2762.27
2	White	Loss	Hara Masao	2120.74
3	Black	Win	Tadokoro Hosai	1972.91
4	Black	Win	Kato Yasuhiro	2054.57
36 Suiseisen Tournament 1st round
Date	1996-03-01		Rating	2135.04
Round	Color	Result	Opponent
4	White	Win	Tanuma Akira	1844.58