Isobe Taizan (磯部泰山)
Place: Omiya, Japan
Rating: 2428.50, Std: 271.99, Rank: -
First game: 1964-11-16, Last game: 2015-03-29
Top rating: 2464.19 (2005-05-04)
Games: 396, Wins: 197, Draws: 64, Losses: 135
Gy1: 0, Gy2: 0, Gy5: 0
| 10th All Japan Championship | ||||
|---|---|---|---|---|
| Date | 2015-03-29 | Rating | 2428.50 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Kon Akira | 1978.41 |
| 2 | White | Loss | Nakayama Tomoharu | 2740.76 |
| 18 Mikami Cup Tournament | ||||
| Date | 2015-01-18 | Rating | 2429.07 | |
| Round | Color | Result | Opponent | |
| S1 | White | Loss | Nakamura Shigeru | 2895.07 |
| S2 | Black | Draw | Okabe Hiroshi | 2735.42 |
| S3 | Black | Draw | Ono Takayuki | 2343.44 |
| 1st Senior Masters Championship | ||||
| Date | 2014-08-29 | Rating | 2427.55 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Kato Yasuhiro | 2084.64 |
| 2 | Black | Win | Kubo Izumi | 2084.92 |
| 3 | Black | Win | Kobayashi Koichi | 2247.11 |
| 4 | Black | Draw | Ishitani Shin-ichi | 2447.70 |
| 5 | Black | Win | Mitsumori Masao | 2333.19 |
| 6 | Black | Win | Miura Hitoshi | 1799.30 |
| 7 | Black | Win | Miyagawa Junzo | 2214.93 |
| 8S | Black | Draw | Ishitani Shin-ichi | 2447.70 |
| 14th Mikami Cup S-class | ||||
| Date | 2014-01-19 | Rating | 2395.96 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Tamura Kazumasa | 2527.81 |
| 3 | White | Loss | Fukui Nobuhiro | 2604.79 |
| 5 | Black | Loss | Ishitani Shin-ichi | 2437.75 |
| 51 Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2013-06-16 | Rating | 2388.95 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Koji | 2165.85 |
| 2 | Black | Loss | Kato Yasuhiro | 2141.37 |
| 3 | White | Loss | Tomobe Katsuhiro | 2155.32 |
| 4 | Black | Win | Kobayashi Koichi | 2211.90 |
| 29th Kanto Championship | ||||
| Date | 2013-05-12 | Rating | 2392.17 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2141.04 |
| 2 | Black | Draw | Mitsumori Masao | 2331.29 |
| 3 | Black | Win | Tada Ayako | 2285.58 |
| 4 | Black | Loss | Sato Kiyotomi | 2445.86 |
| 5 | White | Win | Iwano Fumio | 2178.51 |
| 8th All Japan Championship | ||||
| Date | 2013-03-24 | Rating | 2400.71 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Kubo Izumi | 2087.31 |
| 2 | Black | Loss | Nakamura Shigeru | 2864.57 |
| 3 | White | Loss | Okabe Hiroshi | 2729.10 |
| 4 | Black | Win | Mitsumori Masao | 2336.09 |
| 5 | Black | Win | Miyagawa Junzo | 2215.38 |
| 6 | White | Win | Ishitani Shin-ichi | 2372.46 |
| 16th Mikami Cup Tournament | ||||
| Date | 2013-01-20 | Rating | 2404.21 | |
| Round | Color | Result | Opponent | |
| S1 | Black | Win | Kobayashi Koichi | 2210.07 |
| S2 | Black | Loss | Nakamura Shigeru | 2874.40 |
| S3 | White | Loss | Ono Takayuki | 2412.81 |
| S5 | Black | Win | Ishitani Shin-ichi | 2364.14 |
| 13 Kanto Renju Emperor Tournament 2nd round | ||||
| Date | 2013-01-13 | Rating | 2404.49 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Nakamura Shigeru | 2875.13 |
| 2 | White | Draw | Ishitani Shin-ichi | 2363.09 |
| 3 | White | Loss | Okabe Hiroshi | 2715.25 |
| 4 | Black | Win | Kudomi Takahiro | 2418.12 |
| 5 | Black | Loss | Fukui Nobuhiro | 2562.16 |
| 13 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2012-10-21 | Rating | 2408.16 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Fukui Nobuhiro | 2548.56 |
| 2 | White | Win | Iwano Fumio | 2143.04 |
| 3 | Black | Win | Kato Yasuhiro | 2107.52 |
| 4 | White | Win | Kudomi Takahiro | 2417.02 |
| 50 Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2012-06-03 | Rating | 2405.99 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Kobayashi Koichi | 2231.28 |
| 2 | Black | Loss | Maruta Hiroki | 2089.72 |
| 3 | White | Win | Iwano Fumio | 2130.07 |
| 4 | White | Loss | Ono Takayuki | 2427.25 |
| 29th Kanto Championship | ||||
| Date | 2012-05-13 | Rating | 2410.08 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Fukui Nobuhiro | 2506.33 |
| 2 | White | Win | Tada Ayako | 2281.08 |
| 3 | Black | Win | Kudomi Takahiro | 2424.51 |
| 4 | Black | Win | Iwano Fumio | 2128.34 |
| 5 | White | Loss | Nakamura Shigeru | 2881.73 |
| 15th Mikami Cup Tournament | ||||
| Date | 2012-03-11 | Rating | 2418.28 | |
| Round | Color | Result | Opponent | |
| S1 | Black | Loss | Oosumi Yuuki | 2790.15 |
| S2 | Black | Win | Kobayashi Koichi | 2214.26 |
| S3 | Black | Win | Ishitani Shin-ichi | 2370.04 |
| S4 | White | Win | Kudomi Takahiro | 2423.69 |
| S5 | White | Loss | Nakamura Shigeru | 2875.85 |
| 7th All Japan Championship | ||||
| Date | 2012-01-29 | Rating | 2419.07 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Fujikawa Masaki | 2070.15 |
| 2 | Black | Win | Okabe Hiroshi | 2695.15 |
| 3 | Black | Loss | Oosumi Yuuki | 2787.50 |
| 4 | White | Loss | Ono Takayuki | 2418.71 |
| 5 | Black | Draw | Tada Ayako | 2268.92 |
| 6 | White | Draw | Fukui Nobuhiro | 2484.44 |
| 12 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2011-10-23 | Rating | 2418.40 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Hiroki | 2082.18 |
| 2 | White | Loss | Nakayama Tomoharu | 2585.45 |
| 3 | Black | Win | Koyama Jun | 2434.94 |
| 4 | Black | Win | Kamiya Shunsuke | 2438.92 |
| 49 Meijinsen Qualification East-Japan area 2nd round | ||||
| Date | 2011-07-10 | Rating | 2407.15 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Kamiya Shunsuke | 2418.76 |
| 2 | White | Draw | Nakayama Tomoharu | 2561.50 |
| 4 | Black | Draw | Nagao Noriaki | 2420.58 |
| 5 | Black | Loss | Yamaguchi Yusui | 2637.46 |
| 49 Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2011-06-12 | Rating | 2405.60 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Koyama Jun | 2432.49 |
| 2 | Black | Loss | Kamiya Shunsuke | 2416.15 |
| 3 | Black | Win | Maruta Hiroki | 2105.52 |
| 4 | Black | Draw | Nagao Noriaki | 2419.91 |
| 28th Kanto Championship | ||||
| Date | 2011-05-22 | Rating | 2403.91 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Tomobe Katsuhiro | 2224.93 |
| 2 | White | Loss | Iwano Fumio | 2128.82 |
| 3 | Black | Win | Maruta Hiroki | 2107.54 |
| 4 | Black | Win | Suzuki Rin | 1988.28 |
| 5 | Black | Win | Ono Takayuki | 2392.68 |
| 14th Mikami Cup Tournament | ||||
| Date | 2011-01-30 | Rating | 2405.42 | |
| Round | Color | Result | Opponent | |
| S1 | Black | Loss | Oosumi Yuuki | 2734.20 |
| S2 | White | Win | Ishitani Shin-ichi | 2389.12 |
| S3 | Black | Win | Gakumazawa Hideaki | 2111.08 |
| S4 | White | Loss | Nakamura Shigeru | 2854.56 |
| 11 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2010-10-31 | Rating | 2402.29 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tomobe Katsuhiro | 2221.50 |
| 2 | White | Win | Ono Takayuki | 2384.79 |
| 3 | Black | Loss | Oosumi Yuuki | 2713.76 |
| 4 | White | Loss | Nakayama Tomoharu | 2517.03 |
| Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2010-06-27 | Rating | 2394.42 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tanno Yoshitaka | 2083.83 |
| 2 | White | Win | Tamada Yoichi | 2477.88 |
| 3 | Black | Draw | Mitsumori Masao | 2300.37 |
| 4 | Black | Loss | Kudomi Takahiro | 2394.82 |
| 27th Kanto Championship | ||||
| Date | 2010-05-23 | Rating | 2391.73 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Maruta Hiroki | 2079.13 |
| 2 | Black | Loss | Nakamura Shigeru | 2855.27 |
| 3 | White | Loss | Tamura Kazumasa | 2509.47 |
| 4 | White | Win | Tada Ayako | 2187.64 |
| 5 | White | Loss | Nagao Noriaki | 2375.08 |
| Team World Championship 2010 | ||||
| Date | 2010-05-05 | Rating | 2391.44 | |
| Round | Color | Result | Opponent | |
| 2 | White | Win | Hõbemägi Martin | 2222.81 |
| 6 | Black | Draw | Yakovleva Alyona | 2028.66 |
| 5th All Japan Championship | ||||
| Date | 2010-03-21 | Rating | 2391.30 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Kusajima Masato | 2165.73 |
| 2 | White | Loss | Okabe Hiroshi | 2698.91 |
| 3 | White | Win | Shimoyama Takuma | 2262.69 |
| 4 | White | Loss | Nakamura Shigeru | 2850.66 |
| 5 | White | Loss | Kawasaki Nobuhiko | 2177.66 |
| 6 | White | Win | Maruta Hiroki | 2081.49 |
| 13th Mikami Cup Tournament | ||||
| Date | 2010-01-31 | Rating | 2392.80 | |
| Round | Color | Result | Opponent | |
| S1 | White | Win | Kataoka Mitsuaki | 2259.11 |
| S2 | White | Loss | Okabe Hiroshi | 2689.56 |
| S3 | White | Loss | Tamura Kazumasa | 2510.69 |
| S4 | Black | Win | Ono Takayuki | 2382.18 |
| S5 | White | Loss | Nakamura Shigeru | 2854.57 |
| 10 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2009-10-04 | Rating | 2393.19 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Draw | Tanizaki Ryusuke | 2101.91 |
| 2 | Black | Win | Kuramoto Hideharu | 1895.68 |
| 3 | White | Loss | Fukui Nobuhiro | 2315.65 |
| 4 | Black | Win | Iwano Fumio | 2146.16 |
| 26th Kanto Championship | ||||
| Date | 2009-05-17 | Rating | 2404.59 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Hiroki | 2091.22 |
| 2 | White | Loss | Tamura Kazumasa | 2512.94 |
| 3 | White | Win | Oosumi Yuuki | 2614.63 |
| 4 | Black | Win | Yamaguchi Yusui | 2566.46 |
| 5 | White | Loss | Nakamura Shigeru | 2854.41 |
| The 6th Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2009-05-03 | Rating | 2403.85 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Xu Bin | 2194.08 |
| 2 | White | Draw | Ge Lingfeng | 2439.63 |
| 3 | Black | Loss | Qiu Yunfei | 2439.37 |
| 4 | Black | Win | Mitsumori Masao | 2342.72 |
| 5 | White | Loss | Yu Manjiang | 2502.60 |
| 6 | Black | Loss | Oosumi Yuuki | 2612.89 |
| 7 | Black | Draw | Iio Yoshihiro | 2488.21 |
| 4th All Japan Championship | ||||
| Date | 2009-03-21 | Rating | 2402.66 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Fujikawa Masaki | 2066.19 |
| 2 | Black | Loss | Nakamura Shigeru | 2855.61 |
| 3 | Black | Win | Tanizaki Ryusuke | 2123.64 |
| 4 | White | Win | Miyoshi Takeo | 2208.72 |
| 5 | White | Loss | Oosumi Yuuki | 2609.65 |
| 6 | White | Win | Tamada Yoichi | 2295.01 |
| 12th Mikami Cup Tournament | ||||
| Date | 2009-01-18 | Rating | 2396.90 | |
| Round | Color | Result | Opponent | |
| S1 | White | Loss | Tamura Kazumasa | 2496.01 |
| S2 | White | Loss | Kawamura Norihiko | 2653.76 |
| S3 | White | Loss | Okabe Hiroshi | 2673.11 |
| S5 | Black | Draw | Mitsumori Masao | 2333.90 |
| 9th Kanto Renju Emperor Tournament, 1st round | ||||
| Date | 2008-10-26 | Rating | 2396.61 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2061.74 |
| 2 | White | Loss | Tamada Yoichi | 2266.29 |
| 3 | White | Win | Tadokoro Hosai | 1910.74 |
| 4 | Black | Win | Watanabe Yoko | 2061.14 |
| 46th Meijinsen Qualification East-Japan area 2nd round | ||||
| Date | 2008-07-13 | Rating | 2412.21 | |
| Round | Color | Result | Opponent | |
| White | Loss | Kawamura Norihiko | 2654.09 | |
| White | Loss | Sato Kiyotomi | 2431.86 | |
| White | Loss | Arita Nobuyoshi | 2390.44 | |
| Black | Win | Koyama Jun | 2439.21 | |
| Black | Win | Nagao Noriaki | 2258.65 | |
| 25th Kanto Championship | ||||
| Date | 2008-05-18 | Rating | 2422.84 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Kobayashi Koichi | 2096.21 |
| 2 | White | Loss | Arita Nobuyoshi | 2391.43 |
| 3 | White | Win | Ono Takayuki | 2393.48 |
| 4 | White | Loss | Okabe Hiroshi | 2676.58 |
| 5 | White | Win | Kato Yasuhiro | 1991.99 |
| 3rd All Japan Championship | ||||
| Date | 2008-03-23 | Rating | 2433.88 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tanizaki Ryusuke | 2119.31 |
| 2 | White | Win | Kubo Izumi | 2095.44 |
| 3 | Black | Win | Yamaguchi Yusui | 2610.67 |
| 4 | White | Win | Iio Yoshihiro | 2522.43 |
| 5 | White | Loss | Nakamura Shigeru | 2853.70 |
| 6 | White | Draw | Okabe Hiroshi | 2667.74 |
| 8th Kanto Renju Emperor Tournament 2nd round | ||||
| Date | 2007-12-16 | Rating | 2433.20 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Ono Takayuki | 2384.14 |
| 2 | White | Win | Kurata Kiyotaka | 2273.24 |
| 3 | White | Loss | Ishitani Shin-ichi | 2398.90 |
| 4 | White | Loss | Okabe Hiroshi | 2653.91 |
| 5 | Black | Loss | Nakamura Shigeru | 2854.99 |
| 8 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2007-10-21 | Rating | 2433.65 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Maruta Hiroki | 2026.61 |
| 2 | Black | Loss | Ono Takayuki | 2376.51 |
| 3 | White | Win | Yamamoto Jyunko | 1800.89 |
| 4 | Black | Win | Tanizaki Ryusuke | 2125.65 |
| 5 | Black | Win | Kudomi Takahiro | 2337.04 |
| The 45th Meijin-sen Tournament | ||||
| Date | 2007-09-17 | Rating | 2433.77 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Iio Yoshihiro | 2535.37 |
| 2 | Black | Win | Hiwatashi Kikuma | 1884.27 |
| 3 | Black | Loss | Yamaguchi Yusui | 2650.56 |
| 4 | Black | Draw | Miyoshi Takeo | 2300.69 |
| 5 | Black | Win | Oosumi Yuuki | 2554.10 |
| 6 | Black | Loss | Matsuura Hiroshi | 2299.35 |
| 7 | Black | Win | Sato Kiyotomi | 2396.79 |
| 8 | Black | Loss | Okabe Hiroshi | 2638.67 |
| 9 | Black | Loss | Kawamura Norihiko | 2629.30 |
| 45th Meijinsen Qualification East-Japan area final round | ||||
| Date | 2007-07-08 | Rating | 2432.23 | |
| Round | Color | Result | Opponent | |
| White | Draw | Sato Kiyotomi | 2411.57 | |
| Black | Draw | Kudomi Takahiro | 2338.85 | |
| Black | Win | Arita Nobuyoshi | 2363.66 | |
| 45th Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2007-06-17 | Rating | 2431.22 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tanno Yoshitaka | 2128.56 |
| 2 | White | Win | Maruta Koji | 2103.96 |
| 3 | White | Draw | Kudomi Takahiro | 2338.58 |
| 4 | Black | Draw | Arita Nobuyoshi | 2365.01 |
| 24th Kanto Championship Tournament | ||||
| Date | 2007-05-06 | Rating | 2428.92 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Nagao Noriaki | 2229.25 |
| 2 | White | Win | Ono Takayuki | 2343.96 |
| 3 | White | Draw | Kudomi Takahiro | 2332.87 |
| 4 | Black | Loss | Okabe Hiroshi | 2616.95 |
| 5 | White | Loss | Mitsumori Masao | 2268.51 |
| The 5th Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2007-05-03 | Rating | 2428.91 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Zhu Jianfeng | 2514.35 |
| 2 | White | Loss | Ge Lingfeng | 2467.81 |
| 3 | White | Loss | Qiu Yunfei | 2501.67 |
| SF1 | White | Win | Zhang Yifeng | 2379.60 |
| SF2 | White | Draw | Okabe Hiroshi | 2616.30 |
| SF3 | Black | Draw | Mitsumori Masao | 2268.20 |
| SF4 | White | Win | Ge Chongyu | 2389.53 |
| 2nd All Japan Championship (WC Qualification) | ||||
| Date | 2007-03-25 | Rating | 2425.91 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Draw | Tanizaki Ryusuke | 2138.10 |
| 2 | White | Win | Tanno Yoshitaka | 2127.19 |
| 3 | Black | Win | Sakamoto Suzan | 2295.72 |
| 4 | Black | Win | Iio Yoshihiro | 2519.84 |
| 5 | Black | Loss | Yamaguchi Yusui | 2646.48 |
| 6 | Black | Loss | Sato Kiyotomi | 2422.86 |
| 7th Kanto Renju Emperor Tournament - 1st round | ||||
| Date | 2006-10-15 | Rating | 2412.78 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tomobe Katsuhiro | 2070.43 |
| 2 | White | Win | Tadokoro Hosai | 1931.47 |
| 3 | Black | Draw | Kato Yasuhiro | 2007.34 |
| 4 | White | Win | Kudomi Takahiro | 2289.37 |
| 5 | White | Loss | Sato Kiyotomi | 2440.19 |
| Meijin-sen Qual, East Japan area 1st round | ||||
| Date | 2006-06-18 | Rating | 2407.86 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tanno Yoshitaka | 2107.80 |
| 2 | Black | Loss | Sato Kiyotomi | 2424.77 |
| 3 | White | Loss | Arita Nobuyoshi | 2366.56 |
| 4 | White | Win | Iwano Fumio | 2097.50 |
| 23rd Kanto Championship | ||||
| Date | 2006-05-21 | Rating | 2409.00 | |
| Round | Color | Result | Opponent | |
| 1 | White | Draw | Nagao Noriaki | 2226.30 |
| 2 | White | Win | Ono Takayuki | 2297.44 |
| 3 | White | Loss | Arita Nobuyoshi | 2367.24 |
| 4 | Black | Loss | Koyama Jun | 2334.15 |
| 5 | White | Loss | Tomobe Katsuhiro | 2089.46 |
| 1st All Japan Championship | ||||
| Date | 2006-03-26 | Rating | 2423.27 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Itami Yoshiyuki | 2158.88 |
| 2 | White | Win | Koyama Jun | 2324.13 |
| 3 | Black | Win | Takashima Junya | 2507.69 |
| 4 | Black | Loss | Yamaguchi Yusui | 2633.93 |
| 5 | Black | Loss | Iio Yoshihiro | 2492.20 |
| 6 | White | Win | Mitsumori Masao | 2259.04 |
| The 4th Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2006-03-20 | Rating | 2424.26 | |
| Round | Color | Result | Opponent | |
| 1 | White | Draw | Wu Hao | 2598.29 |
| 2 | White | Loss | Cao Dong | 2548.20 |
| 3 | Black | Loss | Takashima Junya | 2508.01 |
| 4 | Black | Win | Mitsumori Masao | 2259.05 |
| 5 | White | Loss | Zhu Jianfeng | 2496.73 |
| 6 | Black | Win | Ge Lingfeng | 2389.01 |
| 7 | White | Loss | Wu Di | 2587.50 |
| 6th Kanto Renju Emperor Tournament - Semifinal | ||||
| Date | 2005-10-23 | Rating | 2455.73 | |
| Round | Color | Result | Opponent | |
| White | Loss | Yamaguchi Yusui | 2593.73 | |
| White | Win | Okabe Hiroshi | 2589.71 | |
| Black | Loss | Kamemoto Daichi | 2178.84 | |
| Black | Win | Sato Kiyotomi | 2392.67 | |
| Black | Win | Koyama Jun | 2297.87 | |
| 6th Kanto Renju Emperor Tournament - 1st round | ||||
| Date | 2005-10-22 | Rating | 2455.92 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Matsuoka Teruo | 1831.55 |
| 2 | Black | Win | Nagao Noriaki | 2218.46 |
| 3 | White | Win | Ono Takayuki | 2292.65 |
| 4 | Black | Win | Yamaguchi Yusui | 2593.51 |
| 22nd Kanto Championship | ||||
| Date | 2005-05-22 | Rating | 2464.02 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Itami Yoshiyuki | 2184.80 |
| 2 | Black | Win | Sasaki Miyu | 1963.40 |
| 3 | Black | Draw | Arita Nobuyoshi | 2318.05 |
| 4 | Black | Win | Nagao Noriaki | 2229.66 |
| 5 | White | Draw | Okabe Hiroshi | 2582.98 |
| The 3rd Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2005-05-04 | Rating | 2464.19 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Chen Wenxia | 2454.92 |
| 2 | Black | Draw | Yin Licheng | 2404.16 |
| 3 | Black | Win | Tao Junfeng | 1872.81 |
| 4 | White | Win | Ishitani Shin-ichi | 2391.36 |
| 5 | Black | Win | Ge Lingfeng | 2361.85 |
| 6 | Black | Win | Yamaguchi Yusui | 2557.73 |
| 7 | White | Draw | Wu Di | 2551.85 |
| Japan WC Qualification tournament | ||||
| Date | 2005-04-03 | Rating | 2461.23 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Hara Masao | 2052.15 |
| 2 | Black | Win | Tamura Kazumasa | 2342.87 |
| 3 | White | Win | Okabe Hiroshi | 2580.94 |
| 4 | Black | Draw | Matsuura Hiroshi | 2387.24 |
| 5 | White | Draw | Sato Kiyotomi | 2388.43 |
| 6 | Black | Win | Ono Takayuki | 2293.81 |
| 5th Kanto Renju Emperor Tournament - 1st round | ||||
| Date | 2004-11-28 | Rating | 2433.04 | |
| Round | Color | Result | Opponent | |
| 1 | White | Draw | Hara Masao | 2063.91 |
| 2 | Black | Win | Watanabe Tatsuya | 2081.38 |
| 3 | White | Loss | Ono Takayuki | 2290.04 |
| 4 | Black | Loss | Tadokoro Hosai | 1926.19 |
| The 2nd Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2004-05-04 | Rating | 2430.86 | |
| Round | Color | Result | Opponent | |
| White | Loss | Yamaguchi Yusui | 2588.43 | |
| White | Loss | Chen Lin | 2433.82 | |
| White | Draw | Li Hongbin | 2433.93 | |
| Black | Win | Ge Lingfeng | 2322.47 | |
| Black | Win | Xue Wenxi | 2377.31 | |
| Black | Win | Mitsumori Masao | 2249.01 | |
| Black | Win | Xu Bin | 2137.93 | |
| 4th Kanto Renju Emperor Tournament - 2nd round | ||||
| Date | 2003-11-30 | Rating | 2422.14 | |
| Round | Color | Result | Opponent | |
| White | Win | Nagao Noriaki | 2280.20 | |
| White | Win | Mitsumori Masao | 2265.36 | |
| White | Win | Maruta Koji | 2227.88 | |
| Black | Loss | Yamaguchi Yusui | 2592.64 | |
| Black | Loss | Okabe Hiroshi | 2557.08 | |
| 4th Kanto Renju Emperor Tournament - 1st round | ||||
| Date | 2003-11-16 | Rating | 2420.96 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Hiroki | 1932.95 |
| 2 | White | Win | Kato Yasuhiro | 2039.16 |
| 3 | Black | Win | Hara Masao | 2112.94 |
| 4 | Black | Loss | Okabe Hiroshi | 2556.44 |
| 41st Meijin-sen Tournament | ||||
| Date | 2003-09-15 | Rating | 2415.83 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Takashima Junya | 2340.93 |
| 2 | Black | Draw | Kuga Akio | 2382.30 |
| 3 | White | Loss | Kudomi Takahiro | 2339.71 |
| 4 | White | Draw | Matsuura Hiroshi | 2407.41 |
| 5 | White | Loss | Ishitani Shin-ichi | 2382.48 |
| 6 | White | Loss | Okabe Hiroshi | 2549.83 |
| 7 | White | Loss | Hasegawa Kazuto | 2624.58 |
| 8 | Black | Loss | Iio Yoshihiro | 2495.82 |
| 9 | Black | Loss | Miyagawa Junzo | 2261.40 |
| 41th Meijinsen Qualification: East Japan 2nd round | ||||
| Date | 2003-07-13 | Rating | 2428.06 | |
| Round | Color | Result | Opponent | |
| Black | Draw | Okabe Hiroshi | 2543.98 | |
| Black | Win | Suzuki Naoya | 2316.35 | |
| Black | Win | Sato Kiyotomi | 2298.86 | |
| Japan WC Qualification 2003 | ||||
| Date | 2003-03-22 | Rating | 2439.27 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Arita Nobuyoshi | 2183.71 |
| 2 | Black | Win | Iwata Akihisa | 2206.71 |
| 3 | White | Loss | Okabe Hiroshi | 2525.40 |
| 4 | White | Win | Mitsumori Masao | 2298.54 |
| 5 | Black | Win | Miyagawa Junzo | 2266.68 |
| 40th Meijin-sen Tournament | ||||
| Date | 2002-09-16 | Rating | 2445.47 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Matsuura Hiroshi | 2312.11 |
| 2 | White | Win | Okabe Hiroshi | 2473.90 |
| 3 | White | Draw | Hasegawa Kazuto | 2590.04 |
| 4 | Black | Draw | Iio Yoshihiro | 2431.31 |
| 5 | White | Loss | Takagawa Teiji | 2358.27 |
| 6 | Black | Win | Ishitani Shin-ichi | 2390.97 |
| 7 | Black | Draw | Kudomi Takahiro | 2392.53 |
| 8 | Black | Loss | Yamaguchi Yusui | 2588.43 |
| 9 | White | Loss | Nishimura Toshio | 2352.38 |
| 40th Meijinsen Qualification: East Japan 2nd round | ||||
| Date | 2002-07-14 | Rating | 2448.85 | |
| Round | Color | Result | Opponent | |
| White | Win | Sunagawa Shouki | 2170.36 | |
| White | Win | Nara Hideki | 2548.76 | |
| Black | Draw | Okabe Hiroshi | 2465.79 | |
| 40th Meijinsen Qualification: East Japan 1st round | ||||
| Date | 2002-06-02 | Rating | 2447.20 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Koji | 2206.87 |
| 2 | Black | Loss | Suzuki Naoya | 2265.12 |
| 3 | Black | Win | Kato Yasuhiro | 2097.21 |
| 4 | Black | Win | Kubo Izumi | 2208.37 |
| Japan WC Qualification tournament | ||||
| Date | 2001-03-24 | Rating | 2440.68 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Miyagawa Junzo | 2219.43 |
| 2 | Black | Loss | Miyoshi Takeo | 2189.72 |
| 3 | Black | Draw | Koiso Shigemasa | 2168.00 |
| 4 | Black | Win | Okabe Hiroshi | 2333.31 |
| 38th Meijinsen Qualification: East Japan 2nd round | ||||
| Date | 2000-07-02 | Rating | 2453.43 | |
| Round | Color | Result | Opponent | |
| Black | Win | Kusajima Masato | 2355.94 | |
| Black | Win | Kudomi Takahiro | 2354.03 | |
| Black | Draw | Mitsumori Masao | 2290.70 | |
| 38th Meijinsen Qualification: East Japan 1st round | ||||
| Date | 2000-06-04 | Rating | 2453.20 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Kusajima Masato | 2353.22 |
| 2 | Black | Win | Kudomi Takahiro | 2353.12 |
| 3 | Black | Win | Suzuki Naoya | 2170.61 |
| 4 | Black | Win | Maruta Koji | 2208.82 |
| World Championship 1999, BT | ||||
| Date | 1999-08-05 | Rating | 2414.25 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Chen Chen-Kuo | 2125.64 |
| 2 | White | Loss | Li Dong | 2077.14 |
| 3 | White | Win | Gaulitz Joachim | 2375.91 |
| 4 | White | Loss | Poghosyan Albert | 2325.87 |
| 5 | White | Win | Zhao Kai | 2140.05 |
| 6 | White | Win | Guan Jixian | 2053.54 |
| 8 | White | Win | Holgersson Goran | 2309.80 |
| “Compaq Cup” International Invitational Tournament | ||||
| Date | 1997-05-10 | Rating | 2423.74 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Shao Xiaodong | 2108.63 |
| 2 | White | Win | Holgersson Goran | 2325.03 |
| 3 | White | Win | Lu Yao | 1968.58 |
| 4 | White | Win | Karlsson Stefan | 2424.05 |
| 5 | White | Win | Nara Hideki | 2531.05 |
| 6 | Black | Win | Mitsumori Masao | 2322.07 |
| 7 | White | Loss | Ishitani Shin-ichi | 2317.25 |
| 8 | Black | Win | Zhang Jinyu | 2272.14 |
| 9 | Black | Draw | Li Dong | 2104.77 |
| 34th Meijin-sen Tournament | ||||
| Date | 1996-09-23 | Rating | 2391.77 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Nara Hideki | 2528.20 |
| 2 | Black | Draw | Nishimura Toshio | 2338.72 |
| 3 | White | Loss | Yamaguchi Yusui | 2417.06 |
| 4 | White | Draw | Maruyama Yasushi | 2193.42 |
| 5 | Black | Loss | Nishizono Norio | 2485.35 |
| 6 | White | Loss | Sagara Takashi | 2480.67 |
| 7 | White | Win | Ooi Kozo | 2310.78 |
| 8 | White | Win | Matsuura Hiroshi | 2163.77 |
| 9 | White | Loss | Hasegawa Kazuto | 2589.03 |
| Kyoto - 1200 | ||||
| Date | 1994-08-07 | Rating | 2412.75 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Sawai Toshio | 1735.01 |
| 2 | White | Win | Sunagawa Shouki | 2206.12 |
| 3 | White | Draw | Kawamura Norihiko | 2549.95 |
| 4 | White | Draw | Ishitani Shin-ichi | 2298.11 |
| 5 | Black | Win | Nara Hideki | 2548.59 |
| 6 | Black | Loss | Ooi Kozo | 2255.32 |
| 7 | White | Win | Nishimura Toshio | 2358.64 |
| The 13th Meijin-sen Match | ||||
| Date | 1975-12-03 | Rating | 2082.60 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Nakamura Shigeru | 2187.39 |
| 2 | Black | Draw | Nakamura Shigeru | 2187.39 |
| 3 | White | Loss | Nakamura Shigeru | 2187.39 |
| 4 | Black | Loss | Nakamura Shigeru | 2187.39 |
| The 12th Meijin-sen Match | ||||
| Date | 1973-10-08 | Rating | 2124.42 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 2087.82 |
| 2 | Black | Loss | Nishimura Toshio | 2087.82 |
| 3 | White | Win | Nishimura Toshio | 2087.82 |
| 4 | Black | Draw | Nishimura Toshio | 2087.82 |
| The 11th Meijin-sen Match | ||||
| Date | 1972-10-08 | Rating | 2132.08 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 2064.39 |
| 2 | Black | Draw | Nishimura Toshio | 2064.39 |
| 3 | White | Draw | Nishimura Toshio | 2064.39 |
| 4 | Black | Draw | Nishimura Toshio | 2064.39 |
| The 10th Meijin-sen Match | ||||
| Date | 1971-10-18 | Rating | 2134.98 | |
| Round | Color | Result | Opponent | |
| 1 | White | Draw | Nishimura Toshio | 2046.10 |
| 2 | Black | Loss | Nishimura Toshio | 2046.10 |
| 3 | White | Draw | Nishimura Toshio | 2046.10 |
| 4 | Black | Win | Nishimura Toshio | 2046.10 |
| 5 | Black | Draw | Nishimura Toshio | 2046.10 |
| The 9th Meijin-sen Match | ||||
| Date | 1970-10-10 | Rating | 2163.97 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 2000.99 |
| 2 | Black | Win | Nishimura Toshio | 2000.99 |
| 3 | White | Win | Nishimura Toshio | 2000.99 |
| The 8th Meijin-sen Match | ||||
| Date | 1969-10-11 | Rating | 2158.14 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 1991.10 |
| 2 | Black | Win | Nishimura Toshio | 1991.10 |
| 3 | White | Win | Nishimura Toshio | 1991.10 |
| The 7th Meijin-sen Match | ||||
| Date | 1968-10-20 | Rating | 2119.62 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Nishimura Toshio | 2014.24 |
| 2 | White | Loss | Nishimura Toshio | 2014.24 |
| 3 | White | Win | Nishimura Toshio | 2014.24 |
| 4 | Black | Loss | Nishimura Toshio | 2014.24 |
| 5 | White | Loss | Nishimura Toshio | 2014.24 |
| The 6th Meijin-sen Match | ||||
| Date | 1967-10-07 | Rating | 2130.64 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 1986.83 |
| 2 | Black | Win | Nishimura Toshio | 1986.83 |
| 3 | Black | Win | Nishimura Toshio | 1986.83 |
| The 5th Meijin-sen Match | ||||
| Date | 1966-10-10 | Rating | 2104.48 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Nishimura Toshio | 1997.35 |
| 2 | White | Win | Nishimura Toshio | 1997.35 |
| 3 | Black | Win | Nishimura Toshio | 1997.35 |
| 4 | White | Loss | Nishimura Toshio | 1997.35 |
| 5 | Black | Win | Nishimura Toshio | 1997.35 |
| The 4th Meijin-sen Match | ||||
| Date | 1965-10-10 | Rating | 2088.13 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Nishimura Toshio | 1997.93 |
| 2 | White | Win | Nishimura Toshio | 1997.93 |
| 3 | Black | Draw | Nishimura Toshio | 1997.93 |
| 4 | White | Win | Nishimura Toshio | 1997.93 |
| The 3rd Meijin-sen Match | ||||
| Date | 1964-11-16 | Rating | 2037.29 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Nishimura Toshio | 2034.59 |
| 2 | White | Draw | Nishimura Toshio | 2034.59 |
| 3 | Black | Loss | Nishimura Toshio | 2034.59 |
| 4 | Black | Draw | Nishimura Toshio | 2034.59 |
| 5 | Black | Draw | Nishimura Toshio | 2034.59 |