| | |
| All games with provisionals |
| Japan WC qalification 2003 (22.03.03)
|
| Hara Masao - Kudomi Takahiro (2432) | won| - | |
| Ishitani Shin-ichi (2420) - Hara Masao | lost| - | |
| Sakamoto Hirouji (2232) - Hara Masao | lost| - | |
| Yamaguchi Yusui (2619) - Hara Masao | lost| - | |
| Arita Nobuyoshi (2302) - Hara Masao | lost| - | |
| 1953 - 1953 |
| 20th Kanto Shin-ei Tournament (21.9.2003)
|
| Hara Masao - Sato Koichi (1799) | won| - | |
| Hara Masao - Tashiro Yuichi (2122) | lost| - | |
| Sasaki Miyu (0) - Hara Masao | won| - | |
| Hara Masao - Kawabe Tatsuya (0) | won| - | |
| Hara Masao - Nagao Noriaki (2152) | lost| -18 | |
| 1979 - 1979 |
| 4th Kanto Renju Emperor Tournament 1nd round (16.11.2003)
|
| Hara Masao - Maruta Ayana (0) | won| - | |
| Hara Masao - Sunagawa Shouki (2204) | won| +17 | |
| Isobe Taizan (2345) - Hara Masao | lost| -9 | |
| Hara Masao - Matsuo Yoshihiro (2230) | won| +18 | |
| 1924 - 1924 |
| 7 Mikami Cup. A Class (25.01.2004)
|
| Hara Masao - Sato Koichi (1802) | won| - | |
| Hara Masao - Uchiyama Yasuhiko (1796) | won| - | |
| Sato Kiyotomi (2318) - Hara Masao | lost| -11 | |
| Hara Masao - Tanno Yoshitaka (2098) | won| +11 | |
| Arita Nobuyoshi (2211) - Hara Masao | draw| +0 | |
| 1952 - 1952 |
| 44th Suisei-sen Tournament, Final (11.04.2004)
|
| Sato Kiyotomi (2318) - Hara Masao | lost| -11 | |
| Sato Takuma (2131) - Hara Masao | lost| -20 | |
| Sano Hiroyuki (2233) - Hara Masao | won| - | |
| Kitamura Mitsuhiro (0) - Hara Masao | lost| - | |
| Arita Nobuyoshi (2211) - Hara Masao | lost| -16 | |
| 1952 - 1952 |
| 21st Kanto Shin-ei Tournament (12.9.2004)
|
| Hara Masao - Kase Koji (0) | won| - | |
| Watanabe Tatsuya (1637) - Hara Masao | lost| - | |
| Sasaki Miyu (1872) - Hara Masao | won| - | |
| Kamemoto Daichi (0) - Hara Masao | lost| - | |
| Koyama Jun (1809) - Hara Masao | lost| - | |
| 1899 - 1899 |
| 5th Kanto Renju Emperor Tournament. 1st round (28.11.2004)
|
| Hara Masao - Isobe Taizan (2369) | draw| +8 | |
| Tadokoro Hosai (2103) - Hara Masao | draw| -3 | |
| Hara Masao - Kamemoto Daichi (2271) | won| - | |
| Sunagawa Shouki (2163) - Hara Masao | lost| -16 | |
| 1891 - 1891 |
| 8 Mikami Cup. A Class (23.01.2005)
|
| Ishizaki Masatoshi (2149) - Hara Masao | won| - | |
| Kato Yasuhiro (2114) - Hara Masao | draw| -2 | |
| Sato Takuma (2139) - Hara Masao | lost| -17 | |
| Sato Kiyotomi (2327) - Hara Masao | lost| -9 | |
| Arita Nobuyoshi (2189) - Hara Masao | lost| -14 | |
| 1891 - 1891 |
| 45th Suisei-sen Tournament. 1st round (20.03.2005)
|
| Hara Masao - Kamemoto Daichi (2120) | won| - | |
| Hara Masao - Maruta Hiroki (1946) | won| - | |
| Ono Takayuki (2257) - Hara Masao | lost| -10 | |
| Hara Masao - Sano Hiroyuki (2166) | won| +18 | |
| 1891 - 1891 |
| Japan WC qalification 2005 (2-3.04.05)
|
| Isobe Taizan (2358) - Hara Masao | lost| -7 | |
| Tanizaki Ryusuke (1812) - Hara Masao | lost| - | |
| Miyagawa So (1961) - Hara Masao | lost| -23 | |
| Hara Masao - Yamamoto Yasuhiro (2144) | draw| +1 | |
| Hara Masao - Maruta Hiroki (1889) | won| - | |
| Kato Yasuhiro (2103) - Hara Masao | lost| -17 | |
| 1904 - 1904 |
| 45th Suisei-sen Tournament, Final (17.04.2005)
|
| Sato Kiyotomi (2328) - Hara Masao | lost| -6 | |
| Tashiro Yuichi (2255) - Hara Masao | lost| -8 | |
| Arita Nobuyoshi (2161) - Hara Masao | draw| +4 | |
| Nagao Noriaki (2139) - Hara Masao | lost| -13 | |
| Ono Takayuki (2290) - Hara Masao | draw| +9 | |
| 1904 - 1904 |
| 22nd Kanto Championship (22.05.2005)
|
| Kawamura Norihiko (2763) - Hara Masao | lost| -1 | |
| Hara Masao - Matsuoka Teruo (2086) | won| +17 | |
| Watanabe Tatsuya (2071) - Hara Masao | lost| -16 | |
| Sasaki Miyu (2016) - Hara Masao | lost| -18 | |
| Tanizaki Ryusuke (1933) - Hara Masao | lost| -22 | |
| 1904 - 1904 |
| 22st Kanto Shin-ei Tournament (11.9.2005)
|
| Hara Masao - Tanizaki Ryusuke (1933) | draw| -4 | |
| Hara Masao - Koyama Masayuki (0) | won| - | |
| Hara Masao - Nagao Noriaki (2181) | lost| -9 | |
| Hara Masao - Tadokoro Hosai (2084) | won| +19 | |
| Hara Masao - Sasaki Miyu (2023) | won| +16 | |
| 1892 - 1892 |
| 6th Kanto Renju Emperor Tournament. 1st round (23.10.2005)
|
| Hara Masao - Yoda Tsuyoshi (0) | won| - | |
| Mitsumori Masao (2239) - Hara Masao | lost| -8 | |
| Nakata Shinsuke (1971) - Hara Masao | lost| -19 | |
| Hara Masao - Tanji Hiroki (1925) | won| - | |
| 1892 - 1892 |
| 9 Mikami Cup. A Class (29.01.2006)
|
| Ozawa Tetsushi (2157) - Hara Masao | draw| +6 | |
| Hara Masao - Oonuma Nobuhiro (0) | lost| - | |
| Tomobe Katsuhiro (2035) - Hara Masao | lost| -15 | |
| Teshima Masakatsu (1935) - Hara Masao | won| +12 | |
| Nakata Shinsuke (1971) - Hara Masao | lost| -18 | |
| 2017 - 2002 |
| 46th Suisei-sen Tournament. 1st round (12.03.2006)
|
| Hara Masao - Ozawa Tetsushi (2157) | won| +23 | |
| Hara Masao - Watanabe Tatsuya (2115) | lost| -11 | |
| Hara Masao - Tanizaki Ryusuke (1986) | won| +15 | |
| Hara Masao - Kamemoto Daichi (2109) | won| +21 | |
| 2002 - 2050 |
| 1-st All Japan Championship (25-26.03.2006)
|
| Mitsumori Masao (2210) - Hara Masao | lost| -9 | |
| Kudomi Takahiro (2187) - Hara Masao | lost| -10 | |
| Hara Masao - Kubo Izumi (2099) | lost| -14 | |
| Tomobe Katsuhiro (2085) - Hara Masao | lost| -14 | |
| Itami Yoshiyuki (2151) - Hara Masao | lost| -11 | |
| Tadokoro Hosai (1972) - Hara Masao | won| +12 | |
| 2050 - 2004 |
| 46th Suisei-sen Tournament, Final (16.04.2006)
|
| Ono Takayuki (2225) - Hara Masao | lost| -7 | |
| Koyama Jun (2241) - Hara Masao | lost| -6 | |
| Hara Masao - Kato Yasuhiro (2121) | won| +21 | |
| Hara Masao - Nagao Noriaki (2135) | draw| +6 | |
| Hara Masao - Itami Yoshiyuki (2157) | won| +23 | |
| 2004 - 2041 |
| 23rd Kanto Championship (28.05.2006)
|
| Yamaguchi Yusui (2544) - Hara Masao | lost| -2 | |
| Hara Masao - Fujikawa Masaki (1932) | won| +11 | |
| Kawamura Norihiko (2681) - Hara Masao | lost| -1 | |
| Hara Masao - Teshima Masakatsu (1959) | won| +12 | |
| Hara Masao - Maruta Koji (2222) | won| +24 | |
| 2041 - 2085 |
| 44th Meijinsen Qualification: East Japan 1st round (18.06.2006)
|
| Ohno Syunzo (2061) - Hara Masao | lost| -17 | |
| Tanno Yoshitaka (2093) - Hara Masao | lost| -16 | |
| Kato Yasuhiro (2081) - Hara Masao | lost| -16 | |
| Hara Masao - Maruta Koji (2192) | won| +21 | |
| 2085 - 2057 |
| 23rd Kanto Shin-ei Tournament (10.9.2006)
|
| Hara Masao - Tanizaki Ryusuke (1999) | lost| -19 | |
| Hara Masao - Teshima Masakatsu (1922) | won| +10 | |
| Hara Masao - Kamemoto Daichi (2185) | won| +22 | |
| Hara Masao - Watanabe Yoko (0) | won| - | |
| Hara Masao - Ono Takayuki (2204) | won| +22 | |
| 2057 - 2092 |
| 7th Kanto Renju Emperor Tournament. 1st round (15.10.2006)
|
| Hara Masao - Harada Motochika (1858) | won| +7 | |
| Yamaguchi Yusui (2537) - Hara Masao | lost| -2 | |
| Hara Masao - Yamamoto Junko (1844) | won| - | |
| Hara Masao - Maruta Koji (2132) | won| +18 | |
| Arita Nobuyoshi (2319) - Hara Masao | lost| -7 | |
| 2092 - 2108 |
| 7th Kanto Renju Emperor Tournament. Semifinal (10.12.2006)
|
| Nakamura Shigeru (2832) - Hara Masao | lost| -1 | |
| Okabe Hiroshi (2497) - Hara Masao | lost| -3 | |
| Sato Kiyotomi (2423) - Hara Masao | won| +28 | |
| Nagao Noriaki (2201) - Hara Masao | lost| -12 | |
| Kudomi Takahiro (2177) - Hara Masao | lost| -13 | |
| 2108 - 2107 |
| 45th Meijinsen Qualification: East Japan 1st round (17.06.2007)
|
| Hara Masao - Fujikawa Masaki (2050) | won| +13 | |
| Mitsumori Masao (2196) - Hara Masao | lost| -12 | |
| Ono Takayuki (2244) - Hara Masao | lost| -10 | |
| Maruta Koji (2115) - Hara Masao | lost| -16 | |
| 2107 - 2082 |
| 8th Kanto Renju Emperor Tournament. 1st round (28.10.2007)
|
| Hara Masao - Tanji Hiroki (1774) | draw| -11 | |
| Watanabe Tatsuya (2048) - Hara Masao | won| +14 | |
| Nagao Noriaki (2148) - Hara Masao | lost| -13 | |
| Hara Masao - Yamashita Daisuke (0) | won| - | |
| 2082 - 2053 |
| 46th Meijinsen Qualification: East Japan 1st round (15.06.2008)
|
| Nakayama Tomoharu (2110) - Hara Masao | lost| -13 | |
| Kudomi Takahiro (2243) - Hara Masao | lost| -8 | |
| Iwano Fumio (2111) - Hara Masao | lost| -13 | |
| Fujikawa Masaki (2029) - Hara Masao | lost| -17 | |
| 2053 - 2002 |
1789 - 2002 (+213)