Maruta Koji (丸田光治)

Place: Tokyo, Japan

Rating: 2162.64, Std: 103.09, Rank: 496

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

Top rating: 2230.22 (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	2162.64
Round	Color	Result	Opponent
2	White	Win	Suzuki Yoshitaka	1988.91
3	White	Loss	Matsuda Shoma	2404.87
4	White	Loss	Takazawa Nagayoshi	2211.55
5	White	Win	Li Haoyang	2059.63
6	White	Loss	Tanaka Shotaro	2274.68
18th All Japan Championship
Date	2024-02-12		Rating	2168.83
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2379.49
2	Black	Win	Jang Eun Min	2331.78
3	White	Win	Ishitani Shin-ichi	2403.67
4	White	Loss	Park Woong-bae	2353.73
5	White	Win	Tanaka Shotaro	2281.56
6	White	Loss	Lee Ho June	2464.51
24 Kanto Renju Emperor Tournament Kanto area 1st round
Date	2023-11-19		Rating	2157.66
Round	Color	Result	Opponent
3	White	Loss	Tanaka Shotaro	2280.49
4	Black	Loss	Yoshikawa Tomoki	2130.01
40th Kanto Championship
Date	2023-07-09		Rating	2153.05
Round	Color	Result	Opponent
1	Black	Loss	Tanaka Shotaro	2293.75
4	White	Win	Suzuki Yoshitaka	1967.72
17th All Japan Championship
Date	2023-03-19		Rating	2149.82
Round	Color	Result	Opponent
5	White	Loss	Matsuda Shoma	2345.68
6	White	Loss	Takazawa Nagayoshi	2270.67
23 Kanto Renju Emperor Tournament 2nd round
Date	2023-01-29		Rating	2151.54
Round	Color	Result	Opponent
1	Black	Loss	Kamiya Shunsuke	2848.15
2	White	Loss	Fujita Maiko	2403.53
3	White	Loss	Yokoyama Shota	2447.18
4	White	Loss	Inoue Fumiya	2516.46
5	White	Loss	Okabe Hiroshi	2683.35
23 Renju Emperor Tournament Kanto area 1st round
Date	2022-11-06		Rating	2159.32
Round	Color	Result	Opponent
2	White	Win	Kasahara Reiko	1682.00
3	White	Win	Tomobe Katsuhiro	2076.25
4	Black	Win	Tanaka Shotaro	2305.37
39 Kanto Championship
Date	2022-07-31		Rating	2155.96
Round	Color	Result	Opponent
2	White	Win	Li Haoyang	1990.36
3	White	Loss	Ishitani Shin-ichi	2347.52
Special Tournament
Date	2022-04-10		Rating	2151.76
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2398.47
2	White	Loss	Inoue Fumiya	2500.26
3	White	Win	Maruta Hiroki	2205.18
38 Kanto Championship
Date	2021-08-08		Rating	2135.41
Round	Color	Result	Opponent
1	White	Loss	Inoue Fumiya	2494.30
2	White	Win	Kobayashi Nanako	2005.33
3	White	Win	Fujita Maiko	2342.39
16th All Japan Championship
Date	2021-03-28		Rating	2112.12
Round	Color	Result	Opponent
1	White	Loss	Makino Mitsunori	2560.43
2	White	Loss	Ishitani Shin-ichi	2340.38
3	White	Loss	Yoshimoto Yuta	2228.38
4	White	Loss	Kawaai Hitoshi	2002.69
5	White	Loss	Suenaga Daiki	2254.87
6	Black	Win	Maruta Hiroki	2221.23
24th New Year(Mikami)Cup
Date	2021-01-29		Rating	2107.93
Round	Color	Result	Opponent
S1	Black	Win	Maruta Hiroki	2219.90
S2	White	Loss	Makino Mitsunori	2553.78
S3	White	Loss	Okabe Hiroshi	2727.39
S4	Black	Loss	Ono Takayuki	2382.00
S5	White	Loss	Ishitani Shin-ichi	2356.25
21 Renju Emperor Tournament Kanto area 1st round
Date	2020-11-15		Rating	2100.91
Round	Color	Result	Opponent
1	White	Loss	Kawaai Hitoshi	2002.92
2	White	Loss	Suenaga Daiki	2260.53
3	White	Loss	Shimura Hiroki	1985.22
4	White	Win	Kasahara Reiko	1690.38
37 Kanto Championship
Date	2020-08-10		Rating	2107.97
Round	Color	Result	Opponent
3	White	Win	Okada Akihiro	1918.10
5	Black	Loss	Kato Yasuhiro	2073.48
6	Black	Win	Shimura Hiroki	1952.86
58 Meijinsen Qualification Kanto area 1st round
Date	2020-06-21		Rating	2111.66
Round	Color	Result	Opponent
1	White	Loss	Fujita Maiko	2362.72
2	White	Win	Ito Midori	1778.33
20 Renju Emperor Tournament Kanto area 1st round
Date	2019-11-10		Rating	2129.71
Round	Color	Result	Opponent
2	White	Win	Shibata Satoru	1816.29
3	White	Loss	Ishitani Shin-ichi	2368.91
4	White	Win	Tomobe Katsuhiro	2121.19
36 Kanto Championship
Date	2019-07-28		Rating	2133.19
Round	Color	Result	Opponent
5	White	Win	Shibata Satoru	1812.09
6	White	Loss	Miyamoto Syunju	2285.11
57 Meijinsen Qualification East Japan area 2nd round
Date	2019-06-23		Rating	2134.97
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2256.75
2	White	Loss	Koyama Jun	2602.28
3	Black	Win	Maruta Hiroki	2180.04
4	White	Loss	Ono Takayuki	2392.75
5	White	Draw	Inoue Fumiya	2419.85
57 Meijinsen Qualification Kanto area 1st round
Date	2019-05-12		Rating	2135.59
Round	Color	Result	Opponent
1	White	Win	Inoue Fumiya	2420.50
2	White	Win	Maruta Hiroki	2182.71
3	White	Loss	Ono Takayuki	2395.47
4	Black	Loss	Mitsumori Masao	2311.47
13 Middle-dan Players Tournament
Date	2018-08-12		Rating	2110.69
Round	Color	Result	Opponent
1	White	Loss	Kusajima Masato	2303.75
2	White	Loss	Miyamoto Syunju	2263.74
4	White	Loss	Kusajima Masato	2303.75
5	White	Loss	Miyamoto Syunju	2263.74
35 Kanto Championship
Date	2018-07-16		Rating	2111.47
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2832.71
56 Meijinsen Qualification Kanto area 1st round
Date	2018-05-13		Rating	2113.42
Round	Color	Result	Opponent
1	White	Loss	Sato Kiyotomi	2438.70
18 Kanto Renju Emperor Tournament 1st round
Date	2017-11-01		Rating	2122.19
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2717.48
2	Black	Win	Koyama Akihiro	1960.61
3	White	Loss	Ishitani Shin-ichi	2390.44
4	White	Loss	Maruta Hiroki	2138.91
34 Kanto Championship
Date	2017-07-16		Rating	2131.90
Round	Color	Result	Opponent
1	White	Win	Matsumoto Hiro	1724.94
2	Black	Loss	Ishitani Shin-ichi	2389.64
3	White	Loss	Ishima Ryoma	2159.44
12th All Japan Championship
Date	2017-03-26		Rating	2148.91
Round	Color	Result	Opponent
1	White	Draw	Iio Yoshihiro	2543.47
2	White	Loss	Tachi Masaya	2527.65
3	Black	Draw	Nishida Toshio	2086.86
4	Black	Loss	Ono Takayuki	2364.01
5	White	Win	Sakamoto Suzan	2267.88
6	White	Loss	Fujita Yudai	2484.28
17 Kanto Renju Emperor Tournament 2nd round
Date	2016-12-10		Rating	2158.76
Round	Color	Result	Opponent
1	Black	Loss	Nakayama Tomoharu	2780.61
2	White	Loss	Okabe Hiroshi	2712.12
3	Black	Loss	Sato Kiyotomi	2498.88
4	White	Loss	Ishitani Shin-ichi	2395.72
5	White	Loss	Nakamura Shigeru	2956.23
17 Kanto Renju Emperor Tournament 1st round
Date	2016-11-23		Rating	2161.11
Round	Color	Result	Opponent
1	White	Loss	Okabe Hiroshi	2710.81
2	Black	Win	Demachi Koichiro	1929.42
3	White	Loss	Sato Kiyotomi	2499.98
4	White	Win	Maruta Hiroki	2114.97
ex1	Black	Loss	Iwano Fumio	2266.25
33 Kanto Championship
Date	2016-07-31		Rating	2175.37
Round	Color	Result	Opponent
1	White	Win	Cho Enkun	1650.38
2	Black	Loss	Okabe Hiroshi	2719.56
3	White	Win	Kato Yasuhiro	2039.83
54 Meijinsen Qualification Kanto area 1st round
Date	2016-05-22		Rating	2181.58
Round	Color	Result	Opponent
2	Black	Loss	Sato Kiyotomi	2518.20
3	White	Win	Iwano Fumio	2239.15
4	Black	Loss	Mitsumori Masao	2352.04
11th All Japan Championship
Date	2016-01-11		Rating	2190.59
Round	Color	Result	Opponent
1	Black	Loss	Kamiya Shunsuke	2720.08
2	Black	Draw	Chigira Makoto	2026.66
3	White	Loss	Fujita Yudai	2444.11
5	White	Win	Kato Yasuhiro	2035.05
6	White	Win	Suzuki Rin	1921.14
Kanto Championship
Date	2015-07-20		Rating	2202.31
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2761.13
4	White	Win	Hashimoto Takuya	2009.16
5	Black	Win	Kato Yasuhiro	2051.42
6	White	Win	Fujikawa Masaki	2104.30
10th All Japan Championship
Date	2015-03-29		Rating	2198.99
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2673.29
2	White	Win	Fujikawa Masaki	2090.80
31th Kanto Championship
Date	2014-05-11		Rating	2179.24
Round	Color	Result	Opponent
2	White	Loss	Tamura Kazumasa	2520.46
3	White	Loss	Tomobe Katsuhiro	2110.15
4	White	Win	Maruta Hiroki	2101.01
11th Middle-dan players Tournament
Date	2013-08-17		Rating	2172.71
Round	Color	Result	Opponent
1	White	Loss	Kashihara Akihiko	2338.73
2	Black	Loss	Kato Yasuhiro	2131.41
3	White	Win	Maruta Hiroki	2134.74
4	White	Win	Kubo Izumi	2091.14
5	Black	Win	Miyagawa Junzo	2217.01
6	White	Loss	Nakayama Tomoharu	2649.05
51 Meijinsen Qualification East-Japan area 1st round
Date	2013-06-16		Rating	2167.77
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2390.64
29th Kanto Championship
Date	2013-05-12		Rating	2165.83
Round	Color	Result	Opponent
3	Black	Loss	Suzuki Rin	2047.20
4	White	Win	Nakamura Souta	2075.08
5	White	Win	Tada Ayako	2287.26
13 Kanto Renju Emperor Tournament 1st round
Date	2012-10-21		Rating	2146.09
Round	Color	Result	Opponent
1	White	Win	Higuchi Fumiya	1603.60
2	Black	Win	Mitsumori Masao	2345.47
3	White	Loss	Tada Ayako	2303.33
4	White	Loss	Ishitani Shin-ichi	2358.26
50 Meijinsen Qualification East-Japan area 1st round
Date	2012-06-03		Rating	2128.03
Round	Color	Result	Opponent
1	White	Loss	Mitsumori Masao	2362.83
2	White	Loss	Iwano Fumio	2131.68
3	White	Loss	Ono Takayuki	2428.84
4	Black	Win	Maruta Hiroki	2091.34
4th Tohoku Championship
Date	2012-04-08		Rating	2123.32
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2879.53
2	White	Win	Maruta Hiroki	2083.74
3	White	Loss	Kobayashi Koichi	2222.44
4	White	Loss	Kusajima Masato	2180.64
5	White	Win	Hirono Masakazu	1997.38
12 Kanto Renju Emperor Tournament 1st round
Date	2011-10-23		Rating	2109.60
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2440.33
49 Meijinsen Qualification East-Japan area 1st round
Date	2011-06-12		Rating	2100.65
Round	Color	Result	Opponent
1	White	Loss	Kamiya Shunsuke	2417.52
28th Kanto Championship
Date	2011-05-22		Rating	2099.57
Round	Color	Result	Opponent
1	White	Loss	Nakayama Tomoharu	2544.97
2	White	Loss	Arai Kazumi	2370.01
3	White	Loss	Suzuki Rin	1989.77
4	White	Win	Maruta Hiroki	2108.99
5	White	Loss	Fujikawa Masaki	2099.53
11 Kanto Renju Emperor Tournament 1st round
Date	2010-10-31		Rating	2109.01
Round	Color	Result	Opponent
1	Black	Win	Kato Yasuhiro	2067.28
2	White	Loss	Okabe Hiroshi	2694.92
Meijinsen Qualification East-Japan area 1st round
Date	2010-06-27		Rating	2109.17
Round	Color	Result	Opponent
1	White	Loss	Fukui Nobuhiro	2319.20
2	White	Win	Arai Kazumi	2315.89
3	White	Loss	Kudomi Takahiro	2396.18
4	Black	Loss	Tada Ayako	2192.55
27th Kanto Championship
Date	2010-05-23		Rating	2109.24
Round	Color	Result	Opponent
1	Black	Loss	Nakamura Shigeru	2856.58
2	White	Loss	Tomobe Katsuhiro	2207.06
5th All Japan Championship
Date	2010-03-21		Rating	2111.99
Round	Color	Result	Opponent
4	Black	Win	Kusajima Masato	2167.63
10 Kanto Renju Emperor Tournament 1st round
Date	2009-10-04		Rating	2108.53
Round	Color	Result	Opponent
1	White	Loss	Tanji Hiroki	2052.02
2	White	Loss	Tomobe Katsuhiro	2152.26
3	White	Win	Tanizaki Ryusuke	2103.17
4	Black	Win	Fujikawa Masaki	2048.92
26th Kanto Championship
Date	2009-05-17		Rating	2107.37
Round	Color	Result	Opponent
4	Black	Win	Matsuoka Teruo	1907.93
5	Black	Win	Kato Yasuhiro	2023.39
4th All Japan Championship
Date	2009-03-21		Rating	2102.95
Round	Color	Result	Opponent
4	White	Win	Suzuki Rin	1951.33
5	Black	Loss	Tanizaki Ryusuke	2124.84
6	Black	Loss	Nagao Noriaki	2271.00
9th Kanto Renju Emperor Tournament, 1st round
Date	2008-10-26		Rating	2098.94
Round	Color	Result	Opponent
1	White	Draw	Tamada Yoichi	2267.44
2	White	Win	Tada Ayako	2005.09
3	White	Loss	Ono Takayuki	2408.55
4	White	Loss	Nakayama Tomoharu	2284.38
25th Kanto Championship
Date	2008-05-18		Rating	2091.04
Round	Color	Result	Opponent
3	White	Win	Tanizaki Ryusuke	2119.63
4	Black	Win	Kobayashi Koichi	2097.34
5	Black	Loss	Kudomi Takahiro	2335.86
3rd All Japan Championship
Date	2008-03-23		Rating	2082.99
Round	Color	Result	Opponent
1	White	Loss	Yamaguchi Yusui	2611.75
2	White	Loss	Kato Yasuhiro	1984.72
3	White	Loss	Tadokoro Hosai	1925.50
4	White	Loss	Fujikawa Masaki	2105.38
5	White	Loss	Nakayama Tomoharu	2229.96
6	White	Draw	Tanizaki Ryusuke	2120.38
8 Kanto Renju Emperor Tournament 1st round
Date	2007-10-21		Rating	2096.94
Round	Color	Result	Opponent
1	White	Win	Takeuchi Shunsuke	1936.33
2	White	Win	Yamashita Daisuke	1902.50
3	White	Loss	Ishitani Shin-ichi	2397.85
4	White	Loss	Nakayama Tomoharu	2201.73
5	Black	Win	Matsuoka Teruo	1871.48
45th Meijinsen Qualification East-Japan area 1st round
Date	2007-06-17		Rating	2104.98
Round	Color	Result	Opponent
1	Black	Win	Tanizaki Ryusuke	2136.56
2	Black	Loss	Isobe Taizan	2432.25
3	White	Loss	Iwano Fumio	2163.54
4	White	Win	Hara Masao	2052.66
7th Kanto Renju Emperor Tournament - 1st round
Date	2006-10-15		Rating	2109.12
Round	Color	Result	Opponent
1	Black	Win	Matsuoka Teruo	1855.50
2	White	Loss	Maruta Hiroki	2008.59
3	Black	Win	Fujikawa Masaki	2053.88
4	Black	Loss	Hara Masao	2091.24
5	Black	Win	Tanizaki Ryusuke	2126.94
Meijin-sen Qual, East Japan area 1st round
Date	2006-06-18		Rating	2111.54
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2337.41
2	Black	Loss	Arita Nobuyoshi	2367.49
3	White	Loss	Ono Takayuki	2299.99
4	Black	Loss	Hara Masao	2082.68
23rd Kanto Championship
Date	2006-05-21		Rating	2115.83
Round	Color	Result	Opponent
1	White	Win	Iwano Fumio	2094.14
2	Black	Loss	Mitsumori Masao	2257.45
3	Black	Win	Tadokoro Hosai	1933.58
4	Black	Loss	Nakamura Shigeru	2845.41
5	White	Loss	Hara Masao	2082.16
1st All Japan Championship
Date	2006-03-26		Rating	2125.28
Round	Color	Result	Opponent
4	White	Win	Tadokoro Hosai	1929.59
5	Black	Win	Kato Yasuhiro	2053.59
6	White	Win	Tomobe Katsuhiro	2089.47
6th Kanto Renju Emperor Tournament - 1st round
Date	2005-10-22		Rating	2132.65
Round	Color	Result	Opponent
1	Black	Win	Iwano Fumio	2070.20
2	White	Loss	Itami Yoshiyuki	2181.09
3	Black	Loss	Tomobe Katsuhiro	2079.46
4	White	Loss	Arita Nobuyoshi	2345.44
43rd Meijinsen Qualification: East Japan 1st round
Date	2005-06-12		Rating	2150.99
Round	Color	Result	Opponent
1	White	Loss	Koyama Jun	2278.04
2	White	Win	Tanno Yoshitaka	2092.78
3	White	Loss	Nagao Noriaki	2228.64
4	Black	Loss	Itami Yoshiyuki	2188.34
22nd Kanto Championship
Date	2005-05-22		Rating	2155.64
Round	Color	Result	Opponent
1	White	Win	Ishizaki Masatoshi	1914.71
2	Black	Loss	Kawamura Norihiko	2691.17
3	Black	Win	Sasaki Miyu	1964.15
4	White	Win	Koyama Jun	2275.32
5	White	Loss	Ishitani Shin-ichi	2396.35
Japan WC Qualification tournament
Date	2005-04-03		Rating	2161.76
Round	Color	Result	Opponent
4	White	Win	Tanizaki Ryusuke	2073.17
5	Black	Win	Kato Yasuhiro	2023.96
6	White	Loss	Kubo Izumi	2169.49
5th Kanto Renju Emperor Tournament - 1st round
Date	2004-11-28		Rating	2174.73
Round	Color	Result	Opponent
1	Black	Loss	Sato Koichi	2011.05
2	White	Win	Sasaki Miyu	1954.56
3	Black	Win	Maruta Hiroki	1957.30
4	White	Win	Matsuoka Teruo	1886.63
42nd Meijinsen Qualification: East Japan 1st round
Date	2004-06-13		Rating	2194.20
Round	Color	Result	Opponent
4	Black	Loss	Sano Hiroyuki	2164.41
4th Kanto Renju Emperor Tournament - 2nd round
Date	2003-11-30		Rating	2228.75
Round	Color	Result	Opponent
	White	Win	Nagao Noriaki	2280.91
	White	Win	Mitsumori Masao	2266.19
	Black	Loss	Isobe Taizan	2423.09
	Black	Loss	Yamaguchi Yusui	2593.74
	Black	Loss	Okabe Hiroshi	2557.97
4th Kanto Renju Emperor Tournament - 1st round
Date	2003-11-16		Rating	2230.22
Round	Color	Result	Opponent
1	Black	Win	Yamauchi Yasuhiro	1804.75
2	White	Win	Nagao Noriaki	2284.49
3	White	Draw	Yamaguchi Yusui	2592.01
4	White	Win	Kubo Izumi	2218.53
41th Meijinsen Qualification: East Japan 1st round
Date	2003-06-08		Rating	2219.75
Round	Color	Result	Opponent
1	White	Loss	Sano Hiroyuki	2209.12
2	White	Win	Mitsumori Masao	2292.33
3	White	Loss	Sato Kiyotomi	2298.27
4	Black	Draw	Kubo Izumi	2224.52
40th Meijinsen Qualification: East Japan 1st round
Date	2002-06-02		Rating	2207.76
Round	Color	Result	Opponent
1	White	Loss	Isobe Taizan	2448.35
2	Black	Loss	Kato Yasuhiro	2097.96
3	White	Win	Ohno Syunzo	1994.78
4	Black	Win	Sato Takuma	2069.28
38th Meijinsen Qualification: East Japan 1st round
Date	2000-06-04		Rating	2209.75
Round	Color	Result	Opponent
1	Black	Win	Sunagawa Shouki	2211.80
2	White	Win	Mitsumori Masao	2293.50
3	White	Loss	Kudomi Takahiro	2354.49
4	White	Loss	Isobe Taizan	2454.91
Kanto Championship
Date	2000-05-14		Rating	2208.36
Round	Color	Result	Opponent
1	White	Loss	Nakamura Shigeru	2761.48
2	White	Loss	Hara Masao	2120.56
3	Black	Win	Tadokoro Hosai	1972.75
4	Black	Win	Kato Yasuhiro	2054.42
36 Suiseisen Tournament 1st round
Date	1996-03-01		Rating	2134.90
Round	Color	Result	Opponent
4	White	Win	Tanuma Akira	1844.56