Maruta Koji (丸田光治)
Place: Tokyo, Japan
Rating: 2177.23, Std: 94.38, Rank: 476
First game: 1996-03-01, Last game: 2025-04-20
Top rating: 2231.63 (2003-11-16)
Games: 260, Wins: 102, Draws: 8, Losses: 150
Gy1: 15, Gy2: 23, Gy5: 61
19th All Japan Championship | ||||
---|---|---|---|---|
Date | 2025-04-20 | Rating | 2177.23 | |
Round | Color | Result | Opponent | |
1 | Black | Loss |
|
2452.07 |
2 | White | Loss |
|
2380.84 |
3 | White | Loss |
|
2297.22 |
4 | White | Win |
|
1947.93 |
5 | Black | Loss |
|
2390.26 |
6 | White | Win |
|
2057.50 |
4th Masters Renju Tournament | ||||
Date | 2025-03-23 | Rating | 2178.55 | |
Round | Color | Result | Opponent | |
2 | Black | Loss |
|
2218.63 |
3 | White | Win |
|
2192.26 |
4 | Black | Win |
|
2179.86 |
5 | White | Loss |
|
2385.71 |
41st Kanto Championship | ||||
Date | 2024-07-21 | Rating | 2180.63 | |
Round | Color | Result | Opponent | |
2 | White | Win |
|
1966.04 |
3 | White | Loss |
|
2492.42 |
4 | White | Loss |
|
2229.96 |
5 | White | Win |
|
2087.21 |
6 | White | Loss |
|
2314.59 |
18th All Japan Championship | ||||
Date | 2024-02-12 | Rating | 2187.21 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2409.24 |
2 | Black | Win |
|
2345.86 |
3 | White | Win |
|
2406.41 |
4 | White | Loss |
|
2402.56 |
5 | White | Win |
|
2311.88 |
6 | White | Loss |
|
2465.55 |
24 Kanto Renju Emperor Tournament Kanto area 1st round | ||||
Date | 2023-11-19 | Rating | 2176.03 | |
Round | Color | Result | Opponent | |
3 | White | Loss |
|
2307.19 |
4 | Black | Loss |
|
2180.05 |
40th Kanto Championship | ||||
Date | 2023-07-09 | Rating | 2170.55 | |
Round | Color | Result | Opponent | |
1 | Black | Loss |
|
2316.43 |
4 | White | Win |
|
1971.68 |
17th All Japan Championship | ||||
Date | 2023-03-19 | Rating | 2166.69 | |
Round | Color | Result | Opponent | |
5 | White | Loss |
|
2374.19 |
6 | White | Loss |
|
2284.35 |
23 Kanto Renju Emperor Tournament 2nd round | ||||
Date | 2023-01-29 | Rating | 2168.10 | |
Round | Color | Result | Opponent | |
1 | Black | Loss |
|
2854.94 |
2 | White | Loss |
|
2420.40 |
3 | White | Loss |
|
2466.79 |
4 | White | Loss |
|
2529.16 |
5 | White | Loss |
|
2689.39 |
23 Renju Emperor Tournament Kanto area 1st round | ||||
Date | 2022-11-06 | Rating | 2175.36 | |
Round | Color | Result | Opponent | |
2 | White | Win |
|
1736.28 |
3 | White | Win |
|
2108.33 |
4 | Black | Win |
|
2321.96 |
39 Kanto Championship | ||||
Date | 2022-07-31 | Rating | 2171.01 | |
Round | Color | Result | Opponent | |
2 | White | Win |
|
2007.81 |
3 | White | Loss |
|
2358.17 |
Special Tournament | ||||
Date | 2022-04-10 | Rating | 2165.70 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2410.51 |
2 | White | Loss |
|
2509.75 |
3 | White | Win |
|
2216.16 |
38 Kanto Championship | ||||
Date | 2021-08-08 | Rating | 2147.15 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2502.17 |
2 | White | Win |
|
2013.33 |
3 | White | Win |
|
2351.74 |
16th All Japan Championship | ||||
Date | 2021-03-28 | Rating | 2122.80 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2562.16 |
2 | White | Loss |
|
2349.26 |
3 | White | Loss |
|
2239.09 |
4 | White | Loss |
|
2012.32 |
5 | White | Loss |
|
2262.70 |
6 | Black | Win |
|
2229.96 |
24th New Year(Mikami)Cup | ||||
Date | 2021-01-29 | Rating | 2118.24 | |
Round | Color | Result | Opponent | |
S1 | Black | Win |
|
2228.41 |
S2 | White | Loss |
|
2555.92 |
S3 | White | Loss |
|
2732.84 |
S4 | Black | Loss |
|
2390.46 |
S5 | White | Loss |
|
2364.93 |
21 Renju Emperor Tournament Kanto area 1st round | ||||
Date | 2020-11-15 | Rating | 2110.81 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2012.21 |
2 | White | Loss |
|
2268.19 |
3 | White | Loss |
|
1995.23 |
4 | White | Win |
|
1717.77 |
37 Kanto Championship | ||||
Date | 2020-08-10 | Rating | 2117.28 | |
Round | Color | Result | Opponent | |
3 | White | Win |
|
1934.53 |
5 | Black | Loss |
|
2085.82 |
6 | Black | Win |
|
1962.70 |
58 Meijinsen Qualification Kanto area 1st round | ||||
Date | 2020-06-21 | Rating | 2120.58 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2369.57 |
2 | White | Win |
|
1778.05 |
20 Renju Emperor Tournament Kanto area 1st round | ||||
Date | 2019-11-10 | Rating | 2137.16 | |
Round | Color | Result | Opponent | |
2 | White | Win |
|
1824.42 |
3 | White | Loss |
|
2374.83 |
4 | White | Win |
|
2132.13 |
36 Kanto Championship | ||||
Date | 2019-07-28 | Rating | 2139.89 | |
Round | Color | Result | Opponent | |
5 | White | Win |
|
1819.88 |
6 | White | Loss |
|
2283.91 |
57 Meijinsen Qualification East Japan area 2nd round | ||||
Date | 2019-06-23 | Rating | 2141.45 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2257.51 |
2 | White | Loss |
|
2606.84 |
3 | Black | Win |
|
2185.92 |
4 | White | Loss |
|
2398.41 |
5 | White | Draw |
|
2425.04 |
57 Meijinsen Qualification Kanto area 1st round | ||||
Date | 2019-05-12 | Rating | 2141.87 | |
Round | Color | Result | Opponent | |
1 | White | Win |
|
2425.69 |
2 | White | Win |
|
2188.40 |
3 | White | Loss |
|
2400.98 |
4 | Black | Loss |
|
2316.09 |
13 Middle-dan Players Tournament | ||||
Date | 2018-08-12 | Rating | 2115.74 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2304.57 |
2 | White | Loss |
|
2262.89 |
4 | White | Loss |
|
2304.57 |
5 | White | Loss |
|
2262.89 |
35 Kanto Championship | ||||
Date | 2018-07-16 | Rating | 2116.47 | |
Round | Color | Result | Opponent | |
1 | Black | Loss |
|
2837.40 |
56 Meijinsen Qualification Kanto area 1st round | ||||
Date | 2018-05-13 | Rating | 2118.31 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2442.22 |
18 Kanto Renju Emperor Tournament 1st round | ||||
Date | 2017-11-01 | Rating | 2126.73 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2721.52 |
2 | Black | Win |
|
1964.79 |
3 | White | Loss |
|
2394.59 |
4 | White | Loss |
|
2143.48 |
34 Kanto Championship | ||||
Date | 2017-07-16 | Rating | 2136.26 | |
Round | Color | Result | Opponent | |
1 | White | Win |
|
1727.64 |
2 | Black | Loss |
|
2393.74 |
3 | White | Loss |
|
2162.88 |
12th All Japan Championship | ||||
Date | 2017-03-26 | Rating | 2153.11 | |
Round | Color | Result | Opponent | |
1 | White | Draw |
|
2546.70 |
2 | White | Loss |
|
2530.96 |
3 | Black | Draw |
|
2090.65 |
4 | Black | Loss |
|
2367.81 |
5 | White | Win |
|
2271.64 |
6 | White | Loss |
|
2488.46 |
17 Kanto Renju Emperor Tournament 2nd round | ||||
Date | 2016-12-10 | Rating | 2162.84 | |
Round | Color | Result | Opponent | |
1 | Black | Loss |
|
2784.57 |
2 | White | Loss |
|
2715.87 |
3 | Black | Loss |
|
2502.41 |
4 | White | Loss |
|
2399.67 |
5 | White | Loss |
|
2960.14 |
17 Kanto Renju Emperor Tournament 1st round | ||||
Date | 2016-11-23 | Rating | 2165.16 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2714.54 |
2 | Black | Win |
|
1933.31 |
3 | White | Loss |
|
2503.53 |
4 | White | Win |
|
2118.97 |
ex1 | Black | Loss |
|
2270.52 |
33 Kanto Championship | ||||
Date | 2016-07-31 | Rating | 2179.31 | |
Round | Color | Result | Opponent | |
1 | White | Win |
|
1652.45 |
2 | Black | Loss |
|
2723.20 |
3 | White | Win |
|
2045.09 |
54 Meijinsen Qualification Kanto area 1st round | ||||
Date | 2016-05-22 | Rating | 2185.43 | |
Round | Color | Result | Opponent | |
2 | Black | Loss |
|
2521.77 |
3 | White | Win |
|
2243.13 |
4 | Black | Loss |
|
2355.54 |
11th All Japan Championship | ||||
Date | 2016-01-11 | Rating | 2194.29 | |
Round | Color | Result | Opponent | |
1 | Black | Loss |
|
2723.65 |
2 | Black | Draw |
|
2029.78 |
3 | White | Loss |
|
2447.85 |
5 | White | Win |
|
2039.50 |
6 | White | Win |
|
1923.84 |
Kanto Championship | ||||
Date | 2015-07-20 | Rating | 2205.83 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2764.50 |
4 | White | Win |
|
2012.08 |
5 | Black | Win |
|
2055.34 |
6 | White | Win |
|
2107.89 |
10th All Japan Championship | ||||
Date | 2015-03-29 | Rating | 2202.39 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2676.63 |
2 | White | Win |
|
2094.20 |
31th Kanto Championship | ||||
Date | 2014-05-11 | Rating | 2182.30 | |
Round | Color | Result | Opponent | |
2 | White | Loss |
|
2523.07 |
3 | White | Loss |
|
2113.22 |
4 | White | Win |
|
2104.03 |
11th Middle-dan players Tournament | ||||
Date | 2013-08-17 | Rating | 2175.50 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2341.67 |
2 | Black | Loss |
|
2134.20 |
3 | White | Win |
|
2137.51 |
4 | White | Win |
|
2093.90 |
5 | Black | Win |
|
2219.69 |
6 | White | Loss |
|
2651.93 |
51 Meijinsen Qualification East-Japan area 1st round | ||||
Date | 2013-06-16 | Rating | 2170.50 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2393.21 |
29th Kanto Championship | ||||
Date | 2013-05-12 | Rating | 2168.52 | |
Round | Color | Result | Opponent | |
3 | Black | Loss |
|
2049.49 |
4 | White | Win |
|
2077.78 |
5 | White | Win |
|
2289.83 |
13 Kanto Renju Emperor Tournament 1st round | ||||
Date | 2012-10-21 | Rating | 2148.59 | |
Round | Color | Result | Opponent | |
1 | White | Win |
|
1605.11 |
2 | Black | Win |
|
2347.97 |
3 | White | Loss |
|
2305.80 |
4 | White | Loss |
|
2360.77 |
50 Meijinsen Qualification East-Japan area 1st round | ||||
Date | 2012-06-03 | Rating | 2130.41 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2365.23 |
2 | White | Loss |
|
2134.02 |
3 | White | Loss |
|
2431.29 |
4 | Black | Win |
|
2093.67 |
4th Tohoku Championship | ||||
Date | 2012-04-08 | Rating | 2125.64 | |
Round | Color | Result | Opponent | |
1 | Black | Loss |
|
2881.98 |
2 | White | Win |
|
2086.02 |
3 | White | Loss |
|
2224.45 |
4 | White | Loss |
|
2182.35 |
5 | White | Win |
|
1998.59 |
12 Kanto Renju Emperor Tournament 1st round | ||||
Date | 2011-10-23 | Rating | 2111.83 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2442.77 |
49 Meijinsen Qualification East-Japan area 1st round | ||||
Date | 2011-06-12 | Rating | 2102.80 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2419.90 |
28th Kanto Championship | ||||
Date | 2011-05-22 | Rating | 2101.70 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2547.26 |
2 | White | Loss |
|
2372.08 |
3 | White | Loss |
|
1991.76 |
4 | White | Win |
|
2111.10 |
5 | White | Loss |
|
2101.60 |
11 Kanto Renju Emperor Tournament 1st round | ||||
Date | 2010-10-31 | Rating | 2111.02 | |
Round | Color | Result | Opponent | |
1 | Black | Win |
|
2069.18 |
2 | White | Loss |
|
2696.94 |
Meijinsen Qualification East-Japan area 1st round | ||||
Date | 2010-06-27 | Rating | 2111.11 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2321.19 |
2 | White | Win |
|
2317.82 |
3 | White | Loss |
|
2398.09 |
4 | Black | Loss |
|
2194.43 |
27th Kanto Championship | ||||
Date | 2010-05-23 | Rating | 2111.16 | |
Round | Color | Result | Opponent | |
1 | Black | Loss |
|
2858.44 |
2 | White | Loss |
|
2208.92 |
5th All Japan Championship | ||||
Date | 2010-03-21 | Rating | 2113.88 | |
Round | Color | Result | Opponent | |
4 | Black | Win |
|
2169.40 |
10 Kanto Renju Emperor Tournament 1st round | ||||
Date | 2009-10-04 | Rating | 2110.33 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2053.62 |
2 | White | Loss |
|
2153.99 |
3 | White | Win |
|
2104.90 |
4 | Black | Win |
|
2050.63 |
26th Kanto Championship | ||||
Date | 2009-05-17 | Rating | 2109.09 | |
Round | Color | Result | Opponent | |
4 | Black | Win |
|
1909.56 |
5 | Black | Win |
|
2025.03 |
4th All Japan Championship | ||||
Date | 2009-03-21 | Rating | 2104.65 | |
Round | Color | Result | Opponent | |
4 | White | Win |
|
1952.94 |
5 | Black | Loss |
|
2126.47 |
6 | Black | Loss |
|
2272.67 |
9th Kanto Renju Emperor Tournament, 1st round | ||||
Date | 2008-10-26 | Rating | 2100.57 | |
Round | Color | Result | Opponent | |
1 | White | Draw |
|
2268.99 |
2 | White | Win |
|
2006.66 |
3 | White | Loss |
|
2410.07 |
4 | White | Loss |
|
2286.03 |
25th Kanto Championship | ||||
Date | 2008-05-18 | Rating | 2092.62 | |
Round | Color | Result | Opponent | |
3 | White | Win |
|
2121.15 |
4 | Black | Win |
|
2098.82 |
5 | Black | Loss |
|
2337.43 |
3rd All Japan Championship | ||||
Date | 2008-03-23 | Rating | 2084.54 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2613.14 |
2 | White | Loss |
|
1986.20 |
3 | White | Loss |
|
1926.99 |
4 | White | Loss |
|
2106.88 |
5 | White | Loss |
|
2231.52 |
6 | White | Draw |
|
2121.89 |
8 Kanto Renju Emperor Tournament 1st round | ||||
Date | 2007-10-21 | Rating | 2098.43 | |
Round | Color | Result | Opponent | |
1 | White | Win |
|
1937.58 |
2 | White | Win |
|
1903.47 |
3 | White | Loss |
|
2399.27 |
4 | White | Loss |
|
2203.24 |
5 | Black | Win |
|
1872.93 |
45th Meijinsen Qualification East-Japan area 1st round | ||||
Date | 2007-06-17 | Rating | 2106.44 | |
Round | Color | Result | Opponent | |
1 | Black | Win |
|
2137.99 |
2 | Black | Loss |
|
2433.68 |
3 | White | Loss |
|
2164.97 |
4 | White | Win |
|
2054.06 |
7th Kanto Renju Emperor Tournament - 1st round | ||||
Date | 2006-10-15 | Rating | 2110.54 | |
Round | Color | Result | Opponent | |
1 | Black | Win |
|
1856.86 |
2 | White | Loss |
|
2009.93 |
3 | Black | Win |
|
2055.23 |
4 | Black | Loss |
|
2092.60 |
5 | Black | Win |
|
2128.31 |
Meijin-sen Qual, East Japan area 1st round | ||||
Date | 2006-06-18 | Rating | 2112.94 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2338.79 |
2 | Black | Loss |
|
2368.88 |
3 | White | Loss |
|
2301.37 |
4 | Black | Loss |
|
2084.01 |
23rd Kanto Championship | ||||
Date | 2006-05-21 | Rating | 2117.22 | |
Round | Color | Result | Opponent | |
1 | White | Win |
|
2095.49 |
2 | Black | Loss |
|
2258.82 |
3 | Black | Win |
|
1934.91 |
4 | Black | Loss |
|
2847.09 |
5 | White | Loss |
|
2083.50 |
1st All Japan Championship | ||||
Date | 2006-03-26 | Rating | 2126.67 | |
Round | Color | Result | Opponent | |
4 | White | Win |
|
1930.92 |
5 | Black | Win |
|
2054.90 |
6 | White | Win |
|
2090.79 |
6th Kanto Renju Emperor Tournament - 1st round | ||||
Date | 2005-10-22 | Rating | 2134.02 | |
Round | Color | Result | Opponent | |
1 | Black | Win |
|
2071.50 |
2 | White | Loss |
|
2182.39 |
3 | Black | Loss |
|
2080.75 |
4 | White | Loss |
|
2346.79 |
43rd Meijinsen Qualification: East Japan 1st round | ||||
Date | 2005-06-12 | Rating | 2152.36 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2279.36 |
2 | White | Win |
|
2094.05 |
3 | White | Loss |
|
2230.04 |
4 | Black | Loss |
|
2189.62 |
22nd Kanto Championship | ||||
Date | 2005-05-22 | Rating | 2157.01 | |
Round | Color | Result | Opponent | |
1 | White | Win |
|
1915.84 |
2 | Black | Loss |
|
2692.75 |
3 | Black | Win |
|
1965.33 |
4 | White | Win |
|
2276.63 |
5 | White | Loss |
|
2397.78 |
Japan WC Qualification tournament | ||||
Date | 2005-04-03 | Rating | 2163.13 | |
Round | Color | Result | Opponent | |
4 | White | Win |
|
2074.43 |
5 | Black | Win |
|
2025.21 |
6 | White | Loss |
|
2170.98 |
5th Kanto Renju Emperor Tournament - 1st round | ||||
Date | 2004-11-28 | Rating | 2176.10 | |
Round | Color | Result | Opponent | |
1 | Black | Loss |
|
2012.20 |
2 | White | Win |
|
1955.70 |
3 | Black | Win |
|
1958.46 |
4 | White | Win |
|
1887.84 |
42nd Meijinsen Qualification: East Japan 1st round | ||||
Date | 2004-06-13 | Rating | 2195.60 | |
Round | Color | Result | Opponent | |
4 | Black | Loss |
|
2166.18 |
4th Kanto Renju Emperor Tournament - 2nd round | ||||
Date | 2003-11-30 | Rating | 2230.16 | |
Round | Color | Result | Opponent | |
White | Win |
|
2282.45 | |
White | Win |
|
2267.68 | |
Black | Loss |
|
2424.54 | |
Black | Loss |
|
2595.38 | |
Black | Loss |
|
2559.61 | |
4th Kanto Renju Emperor Tournament - 1st round | ||||
Date | 2003-11-16 | Rating | 2231.63 | |
Round | Color | Result | Opponent | |
1 | Black | Win |
|
1805.29 |
2 | White | Win |
|
2286.03 |
3 | White | Draw |
|
2593.66 |
4 | White | Win |
|
2220.11 |
41th Meijinsen Qualification: East Japan 1st round | ||||
Date | 2003-06-08 | Rating | 2221.16 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2210.71 |
2 | White | Win |
|
2293.90 |
3 | White | Loss |
|
2299.61 |
4 | Black | Draw |
|
2226.14 |
40th Meijinsen Qualification: East Japan 1st round | ||||
Date | 2002-06-02 | Rating | 2209.13 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2449.93 |
2 | Black | Loss |
|
2099.15 |
3 | White | Win |
|
1995.96 |
4 | Black | Win |
|
2070.45 |
38th Meijinsen Qualification: East Japan 1st round | ||||
Date | 2000-06-04 | Rating | 2211.10 | |
Round | Color | Result | Opponent | |
1 | Black | Win |
|
2213.34 |
2 | White | Win |
|
2295.07 |
3 | White | Loss |
|
2356.70 |
4 | White | Loss |
|
2456.75 |
Kanto Championship | ||||
Date | 2000-05-14 | Rating | 2209.70 | |
Round | Color | Result | Opponent | |
1 | White | Loss |
|
2763.92 |
2 | White | Loss |
|
2121.89 |
3 | Black | Win |
|
1974.00 |
4 | Black | Win |
|
2055.51 |
36 Suiseisen Tournament 1st round | ||||
Date | 1996-03-01 | Rating | 2135.84 | |
Round | Color | Result | Opponent | |
4 | White | Win |
|
1844.76 |