Isobe Taizan (磯部泰山)
Place: Omiya, Japan
Birth: 1930-12-25
Rating: 2430.29, Std: 279.26, Rank: -
First game: 1964-11-16, Last game: 2015-03-29
Top rating: 2465.11 (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 | 2430.29 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Kon Akira | 1980.20 |
| 2 | White | Loss | Nakayama Tomoharu | 2742.42 |
| 18 Mikami Cup Tournament | ||||
| Date | 2015-01-18 | Rating | 2430.85 | |
| Round | Color | Result | Opponent | |
| S1 | White | Loss | Nakamura Shigeru | 2896.69 |
| S2 | Black | Draw | Okabe Hiroshi | 2737.08 |
| S3 | Black | Draw | Ono Takayuki | 2345.47 |
| 1st Senior Masters Championship | ||||
| Date | 2014-08-29 | Rating | 2429.33 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Kato Yasuhiro | 2086.84 |
| 2 | Black | Win | Kubo Izumi | 2086.85 |
| 3 | Black | Win | Kobayashi Koichi | 2250.11 |
| 4 | Black | Draw | Ishitani Shin-ichi | 2449.50 |
| 5 | Black | Win | Mitsumori Masao | 2335.27 |
| 6 | Black | Win | Miura Hitoshi | 1803.46 |
| 7 | Black | Win | Miyagawa Junzo | 2216.79 |
| 8S | Black | Draw | Ishitani Shin-ichi | 2449.50 |
| 14th Mikami Cup S-class | ||||
| Date | 2014-01-19 | Rating | 2397.68 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Tamura Kazumasa | 2529.20 |
| 3 | White | Loss | Fukui Nobuhiro | 2605.66 |
| 5 | Black | Loss | Ishitani Shin-ichi | 2439.42 |
| 51 Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2013-06-16 | Rating | 2390.64 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Koji | 2167.77 |
| 2 | Black | Loss | Kato Yasuhiro | 2143.18 |
| 3 | White | Loss | Tomobe Katsuhiro | 2157.13 |
| 4 | Black | Win | Kobayashi Koichi | 2214.07 |
| 29th Kanto Championship | ||||
| Date | 2013-05-12 | Rating | 2393.84 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Maruta Hiroki | 2142.77 |
| 2 | Black | Draw | Mitsumori Masao | 2333.07 |
| 3 | Black | Win | Tada Ayako | 2287.26 |
| 4 | Black | Loss | Sato Kiyotomi | 2447.51 |
| 5 | White | Win | Iwano Fumio | 2180.28 |
| 8th All Japan Championship | ||||
| Date | 2013-03-24 | Rating | 2402.37 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Kubo Izumi | 2089.02 |
| 2 | Black | Loss | Nakamura Shigeru | 2866.10 |
| 3 | White | Loss | Okabe Hiroshi | 2730.65 |
| 4 | Black | Win | Mitsumori Masao | 2337.84 |
| 5 | Black | Win | Miyagawa Junzo | 2217.05 |
| 6 | White | Win | Ishitani Shin-ichi | 2374.09 |
| 16th Mikami Cup Tournament | ||||
| Date | 2013-01-20 | Rating | 2405.85 | |
| Round | Color | Result | Opponent | |
| S1 | Black | Win | Kobayashi Koichi | 2212.10 |
| S2 | Black | Loss | Nakamura Shigeru | 2875.93 |
| S3 | White | Loss | Ono Takayuki | 2414.46 |
| S5 | Black | Win | Ishitani Shin-ichi | 2365.75 |
| 13 Kanto Renju Emperor Tournament 2nd round | ||||
| Date | 2013-01-13 | Rating | 2406.13 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Nakamura Shigeru | 2876.66 |
| 2 | White | Draw | Ishitani Shin-ichi | 2364.70 |
| 3 | White | Loss | Okabe Hiroshi | 2716.81 |
| 4 | Black | Win | Kudomi Takahiro | 2419.79 |
| 5 | Black | Loss | Fukui Nobuhiro | 2563.49 |
| 13 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2012-10-21 | Rating | 2409.78 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Fukui Nobuhiro | 2549.94 |
| 2 | White | Win | Iwano Fumio | 2144.71 |
| 3 | Black | Win | Kato Yasuhiro | 2109.21 |
| 4 | White | Win | Kudomi Takahiro | 2418.67 |
| 50 Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2012-06-03 | Rating | 2407.57 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Kobayashi Koichi | 2233.15 |
| 2 | Black | Loss | Maruta Hiroki | 2091.34 |
| 3 | White | Win | Iwano Fumio | 2131.68 |
| 4 | White | Loss | Ono Takayuki | 2428.84 |
| 29th Kanto Championship | ||||
| Date | 2012-05-13 | Rating | 2411.66 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Fukui Nobuhiro | 2507.75 |
| 2 | White | Win | Tada Ayako | 2282.65 |
| 3 | Black | Win | Kudomi Takahiro | 2426.15 |
| 4 | Black | Win | Iwano Fumio | 2129.95 |
| 5 | White | Loss | Nakamura Shigeru | 2883.27 |
| 15th Mikami Cup Tournament | ||||
| Date | 2012-03-11 | Rating | 2419.84 | |
| Round | Color | Result | Opponent | |
| S1 | Black | Loss | Oosumi Yuuki | 2791.68 |
| S2 | Black | Win | Kobayashi Koichi | 2216.07 |
| S3 | Black | Win | Ishitani Shin-ichi | 2371.58 |
| S4 | White | Win | Kudomi Takahiro | 2425.30 |
| S5 | White | Loss | Nakamura Shigeru | 2877.37 |
| 7th All Japan Championship | ||||
| Date | 2012-01-29 | Rating | 2420.62 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Fujikawa Masaki | 2071.79 |
| 2 | Black | Win | Okabe Hiroshi | 2696.73 |
| 3 | Black | Loss | Oosumi Yuuki | 2789.02 |
| 4 | White | Loss | Ono Takayuki | 2420.27 |
| 5 | Black | Draw | Tada Ayako | 2270.46 |
| 6 | White | Draw | Fukui Nobuhiro | 2485.86 |
| 12 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2011-10-23 | Rating | 2419.92 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Hiroki | 2083.69 |
| 2 | White | Loss | Nakayama Tomoharu | 2587.04 |
| 3 | Black | Win | Koyama Jun | 2436.42 |
| 4 | Black | Win | Kamiya Shunsuke | 2440.33 |
| 49 Meijinsen Qualification East-Japan area 2nd round | ||||
| Date | 2011-07-10 | Rating | 2408.64 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Kamiya Shunsuke | 2420.13 |
| 2 | White | Draw | Nakayama Tomoharu | 2563.08 |
| 4 | Black | Draw | Nagao Noriaki | 2422.05 |
| 5 | Black | Loss | Yamaguchi Yusui | 2638.88 |
| 49 Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2011-06-12 | Rating | 2407.08 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Koyama Jun | 2433.94 |
| 2 | Black | Loss | Kamiya Shunsuke | 2417.52 |
| 3 | Black | Win | Maruta Hiroki | 2106.98 |
| 4 | Black | Draw | Nagao Noriaki | 2421.38 |
| 28th Kanto Championship | ||||
| Date | 2011-05-22 | Rating | 2405.38 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Tomobe Katsuhiro | 2226.38 |
| 2 | White | Loss | Iwano Fumio | 2130.28 |
| 3 | Black | Win | Maruta Hiroki | 2108.99 |
| 4 | Black | Win | Suzuki Rin | 1989.77 |
| 5 | Black | Win | Ono Takayuki | 2394.17 |
| 14th Mikami Cup Tournament | ||||
| Date | 2011-01-30 | Rating | 2406.86 | |
| Round | Color | Result | Opponent | |
| S1 | Black | Loss | Oosumi Yuuki | 2735.59 |
| S2 | White | Win | Ishitani Shin-ichi | 2390.51 |
| S3 | Black | Win | Gakumazawa Hideaki | 2113.25 |
| S4 | White | Loss | Nakamura Shigeru | 2855.95 |
| 11 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2010-10-31 | Rating | 2403.70 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tomobe Katsuhiro | 2222.89 |
| 2 | White | Win | Ono Takayuki | 2386.19 |
| 3 | Black | Loss | Oosumi Yuuki | 2715.10 |
| 4 | White | Loss | Nakayama Tomoharu | 2518.47 |
| Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2010-06-27 | Rating | 2395.79 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tanno Yoshitaka | 2086.03 |
| 2 | White | Win | Tamada Yoichi | 2479.21 |
| 3 | Black | Draw | Mitsumori Masao | 2301.72 |
| 4 | Black | Loss | Kudomi Takahiro | 2396.18 |
| 27th Kanto Championship | ||||
| Date | 2010-05-23 | Rating | 2393.09 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Maruta Hiroki | 2080.44 |
| 2 | Black | Loss | Nakamura Shigeru | 2856.58 |
| 3 | White | Loss | Tamura Kazumasa | 2510.72 |
| 4 | White | Win | Tada Ayako | 2188.97 |
| 5 | White | Loss | Nagao Noriaki | 2376.41 |
| Team World Championship 2010 | ||||
| Date | 2010-05-05 | Rating | 2392.80 | |
| Round | Color | Result | Opponent | |
| 2 | White | Win | Hõbemägi Martin | 2224.41 |
| 6 | Black | Draw | Yakovleva Alyona | 2030.12 |
| 5th All Japan Championship | ||||
| Date | 2010-03-21 | Rating | 2392.63 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Kusajima Masato | 2167.63 |
| 2 | White | Loss | Okabe Hiroshi | 2700.22 |
| 3 | White | Win | Shimoyama Takuma | 2263.98 |
| 4 | White | Loss | Nakamura Shigeru | 2851.95 |
| 5 | White | Loss | Kawasaki Nobuhiko | 2178.84 |
| 6 | White | Win | Maruta Hiroki | 2082.77 |
| 13th Mikami Cup Tournament | ||||
| Date | 2010-01-31 | Rating | 2394.11 | |
| Round | Color | Result | Opponent | |
| S1 | White | Win | Kataoka Mitsuaki | 2260.10 |
| S2 | White | Loss | Okabe Hiroshi | 2690.85 |
| S3 | White | Loss | Tamura Kazumasa | 2511.92 |
| S4 | Black | Win | Ono Takayuki | 2383.45 |
| S5 | White | Loss | Nakamura Shigeru | 2855.85 |
| 10 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2009-10-04 | Rating | 2394.46 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Draw | Tanizaki Ryusuke | 2103.17 |
| 2 | Black | Win | Kuramoto Hideharu | 1896.85 |
| 3 | White | Loss | Fukui Nobuhiro | 2316.94 |
| 4 | Black | Win | Iwano Fumio | 2147.41 |
| 26th Kanto Championship | ||||
| Date | 2009-05-17 | Rating | 2405.82 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Hiroki | 2092.40 |
| 2 | White | Loss | Tamura Kazumasa | 2514.10 |
| 3 | White | Win | Oosumi Yuuki | 2615.76 |
| 4 | Black | Win | Yamaguchi Yusui | 2567.64 |
| 5 | White | Loss | Nakamura Shigeru | 2855.64 |
| The 6th Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2009-05-03 | Rating | 2405.08 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Xu Bin | 2195.42 |
| 2 | White | Draw | Ge Lingfeng | 2441.10 |
| 3 | Black | Loss | Qiu Yunfei | 2440.80 |
| 4 | Black | Win | Mitsumori Masao | 2343.93 |
| 5 | White | Loss | Yu Manjiang | 2503.88 |
| 6 | Black | Loss | Oosumi Yuuki | 2614.01 |
| 7 | Black | Draw | Iio Yoshihiro | 2489.41 |
| 4th All Japan Championship | ||||
| Date | 2009-03-21 | Rating | 2403.87 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Fujikawa Masaki | 2067.36 |
| 2 | Black | Loss | Nakamura Shigeru | 2856.84 |
| 3 | Black | Win | Tanizaki Ryusuke | 2124.84 |
| 4 | White | Win | Miyoshi Takeo | 2209.86 |
| 5 | White | Loss | Oosumi Yuuki | 2610.77 |
| 6 | White | Win | Tamada Yoichi | 2296.20 |
| 12th Mikami Cup Tournament | ||||
| Date | 2009-01-18 | Rating | 2398.09 | |
| Round | Color | Result | Opponent | |
| S1 | White | Loss | Tamura Kazumasa | 2497.15 |
| S2 | White | Loss | Kawamura Norihiko | 2654.88 |
| S3 | White | Loss | Okabe Hiroshi | 2674.26 |
| S5 | Black | Draw | Mitsumori Masao | 2335.07 |
| 9th Kanto Renju Emperor Tournament, 1st round | ||||
| Date | 2008-10-26 | Rating | 2397.77 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Maruta Hiroki | 2062.84 |
| 2 | Black | Loss | Tamada Yoichi | 2267.44 |
| 3 | White | Win | Tadokoro Hosai | 1911.81 |
| 4 | Black | Win | Watanabe Yoko | 2062.12 |
| 46th Meijinsen Qualification East-Japan area 2nd round | ||||
| Date | 2008-07-13 | Rating | 2413.34 | |
| Round | Color | Result | Opponent | |
| White | Loss | Kawamura Norihiko | 2655.20 | |
| White | Loss | Sato Kiyotomi | 2432.97 | |
| White | Loss | Arita Nobuyoshi | 2391.52 | |
| Black | Win | Koyama Jun | 2440.34 | |
| Black | Win | Nagao Noriaki | 2259.76 | |
| 25th Kanto Championship | ||||
| Date | 2008-05-18 | Rating | 2423.95 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Kobayashi Koichi | 2097.34 |
| 2 | White | Loss | Arita Nobuyoshi | 2392.50 |
| 3 | White | Win | Ono Takayuki | 2394.57 |
| 4 | White | Loss | Okabe Hiroshi | 2677.65 |
| 5 | White | Win | Kato Yasuhiro | 1993.05 |
| 3rd All Japan Championship | ||||
| Date | 2008-03-23 | Rating | 2434.97 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tanizaki Ryusuke | 2120.38 |
| 2 | White | Win | Kubo Izumi | 2096.50 |
| 3 | Black | Win | Yamaguchi Yusui | 2611.75 |
| 4 | Black | Win | Iio Yoshihiro | 2523.50 |
| 5 | White | Loss | Nakamura Shigeru | 2854.91 |
| 6 | White | Draw | Okabe Hiroshi | 2668.81 |
| 8th Kanto Renju Emperor Tournament 2nd round | ||||
| Date | 2007-12-16 | Rating | 2434.27 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Ono Takayuki | 2385.19 |
| 2 | White | Win | Kurata Kiyotaka | 2274.17 |
| 3 | White | Loss | Ishitani Shin-ichi | 2399.90 |
| 4 | White | Loss | Okabe Hiroshi | 2654.95 |
| 5 | Black | Loss | Nakamura Shigeru | 2856.21 |
| 8 Kanto Renju Emperor Tournament 1st round | ||||
| Date | 2007-10-21 | Rating | 2434.71 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Maruta Hiroki | 2027.60 |
| 2 | Black | Loss | Ono Takayuki | 2377.55 |
| 3 | White | Win | Yamamoto Jyunko | 1801.82 |
| 4 | Black | Win | Tanizaki Ryusuke | 2126.68 |
| 5 | Black | Win | Kudomi Takahiro | 2338.08 |
| The 45th Meijin-sen Tournament | ||||
| Date | 2007-09-17 | Rating | 2434.82 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Iio Yoshihiro | 2536.37 |
| 2 | Black | Win | Hiwatashi Kikuma | 1884.97 |
| 3 | Black | Loss | Yamaguchi Yusui | 2651.58 |
| 4 | Black | Draw | Miyoshi Takeo | 2301.69 |
| 5 | Black | Win | Oosumi Yuuki | 2555.11 |
| 6 | Black | Loss | Matsuura Hiroshi | 2300.37 |
| 7 | Black | Win | Sato Kiyotomi | 2397.82 |
| 8 | Black | Loss | Okabe Hiroshi | 2639.69 |
| 9 | Black | Loss | Kawamura Norihiko | 2630.39 |
| 45th Meijinsen Qualification East-Japan area final round | ||||
| Date | 2007-07-08 | Rating | 2433.28 | |
| Round | Color | Result | Opponent | |
| White | Draw | Sato Kiyotomi | 2412.58 | |
| Black | Draw | Kudomi Takahiro | 2339.87 | |
| Black | Win | Arita Nobuyoshi | 2364.67 | |
| 45th Meijinsen Qualification East-Japan area 1st round | ||||
| Date | 2007-06-17 | Rating | 2432.25 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tanno Yoshitaka | 2129.71 |
| 2 | White | Win | Maruta Koji | 2104.98 |
| 3 | White | Draw | Kudomi Takahiro | 2339.59 |
| 4 | Black | Draw | Arita Nobuyoshi | 2366.01 |
| 24th Kanto Championship Tournament | ||||
| Date | 2007-05-06 | Rating | 2429.95 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Nagao Noriaki | 2230.24 |
| 2 | White | Win | Ono Takayuki | 2344.95 |
| 3 | White | Draw | Kudomi Takahiro | 2333.87 |
| 4 | Black | Loss | Okabe Hiroshi | 2617.95 |
| 5 | White | Loss | Mitsumori Masao | 2269.51 |
| The 5th Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2007-05-03 | Rating | 2429.94 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Zhu Jianfeng | 2515.54 |
| 2 | White | Loss | Ge Lingfeng | 2468.98 |
| 3 | White | Loss | Qiu Yunfei | 2502.77 |
| SF1 | White | Win | Zhang Yifeng | 2380.79 |
| SF2 | White | Draw | Okabe Hiroshi | 2617.30 |
| SF3 | Black | Draw | Mitsumori Masao | 2269.19 |
| SF4 | White | Win | Ge Chongyu | 2390.63 |
| 2nd All Japan Championship (WC Qualification) | ||||
| Date | 2007-03-25 | Rating | 2426.93 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Draw | Tanizaki Ryusuke | 2139.07 |
| 2 | White | Win | Tanno Yoshitaka | 2128.31 |
| 3 | Black | Win | Sakamoto Suzan | 2296.69 |
| 4 | Black | Win | Iio Yoshihiro | 2520.82 |
| 5 | Black | Loss | Yamaguchi Yusui | 2647.47 |
| 6 | Black | Loss | Sato Kiyotomi | 2423.85 |
| 7th Kanto Renju Emperor Tournament - 1st round | ||||
| Date | 2006-10-15 | Rating | 2413.77 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tomobe Katsuhiro | 2071.33 |
| 2 | White | Win | Tadokoro Hosai | 1932.37 |
| 3 | Black | Draw | Kato Yasuhiro | 2008.25 |
| 4 | White | Win | Kudomi Takahiro | 2290.32 |
| 5 | White | Loss | Sato Kiyotomi | 2441.14 |
| Meijin-sen Qual, East Japan area 1st round | ||||
| Date | 2006-06-18 | Rating | 2408.82 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Tanno Yoshitaka | 2108.81 |
| 2 | Black | Loss | Sato Kiyotomi | 2425.70 |
| 3 | White | Loss | Arita Nobuyoshi | 2367.49 |
| 4 | White | Win | Iwano Fumio | 2098.40 |
| 23rd Kanto Championship | ||||
| Date | 2006-05-21 | Rating | 2409.96 | |
| Round | Color | Result | Opponent | |
| 1 | White | Draw | Nagao Noriaki | 2227.21 |
| 2 | White | Win | Ono Takayuki | 2298.34 |
| 3 | White | Loss | Arita Nobuyoshi | 2368.17 |
| 4 | Black | Loss | Koyama Jun | 2335.06 |
| 5 | White | Loss | Tomobe Katsuhiro | 2090.35 |
| 1st All Japan Championship | ||||
| Date | 2006-03-26 | Rating | 2424.22 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Itami Yoshiyuki | 2159.72 |
| 2 | White | Win | Koyama Jun | 2325.03 |
| 3 | Black | Win | Takashima Junya | 2508.64 |
| 4 | Black | Loss | Yamaguchi Yusui | 2634.85 |
| 5 | Black | Loss | Iio Yoshihiro | 2493.11 |
| 6 | White | Win | Mitsumori Masao | 2259.93 |
| The 4th Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2006-03-20 | Rating | 2425.21 | |
| Round | Color | Result | Opponent | |
| 1 | White | Draw | Wu Hao | 2599.26 |
| 2 | White | Loss | Cao Dong | 2549.22 |
| 3 | Black | Loss | Takashima Junya | 2508.96 |
| 4 | Black | Win | Mitsumori Masao | 2259.94 |
| 5 | White | Loss | Zhu Jianfeng | 2497.75 |
| 6 | Black | Win | Ge Lingfeng | 2390.04 |
| 7 | White | Loss | Wu Di | 2588.50 |
| 6th Kanto Renju Emperor Tournament - Semifinal | ||||
| Date | 2005-10-23 | Rating | 2456.67 | |
| Round | Color | Result | Opponent | |
| White | Loss | Yamaguchi Yusui | 2594.61 | |
| White | Win | Okabe Hiroshi | 2590.60 | |
| Black | Loss | Kamemoto Daichi | 2179.68 | |
| Black | Win | Sato Kiyotomi | 2393.55 | |
| Black | Win | Koyama Jun | 2298.74 | |
| 6th Kanto Renju Emperor Tournament - 1st round | ||||
| Date | 2005-10-22 | Rating | 2456.86 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Matsuoka Teruo | 1832.40 |
| 2 | Black | Win | Nagao Noriaki | 2219.33 |
| 3 | White | Win | Ono Takayuki | 2293.51 |
| 4 | Black | Win | Yamaguchi Yusui | 2594.39 |
| 22nd Kanto Championship | ||||
| Date | 2005-05-22 | Rating | 2464.95 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Itami Yoshiyuki | 2185.60 |
| 2 | Black | Win | Sasaki Miyu | 1964.15 |
| 3 | Black | Draw | Arita Nobuyoshi | 2318.91 |
| 4 | Black | Win | Nagao Noriaki | 2230.50 |
| 5 | White | Draw | Okabe Hiroshi | 2583.88 |
| The 3rd Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2005-05-04 | Rating | 2465.11 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Chen Wenxia | 2455.89 |
| 2 | Black | Draw | Yin Licheng | 2405.22 |
| 3 | Black | Win | Tao Junfeng | 1873.25 |
| 4 | White | Win | Ishitani Shin-ichi | 2392.16 |
| 5 | Black | Win | Ge Lingfeng | 2362.83 |
| 6 | Black | Win | Yamaguchi Yusui | 2558.62 |
| 7 | White | Draw | Wu Di | 2552.80 |
| Japan WC Qualification tournament | ||||
| Date | 2005-04-03 | Rating | 2462.16 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Hara Masao | 2052.97 |
| 2 | Black | Win | Tamura Kazumasa | 2343.81 |
| 3 | White | Win | Okabe Hiroshi | 2581.84 |
| 4 | Black | Draw | Matsuura Hiroshi | 2388.19 |
| 5 | White | Draw | Sato Kiyotomi | 2389.29 |
| 6 | Black | Win | Ono Takayuki | 2294.64 |
| 5th Kanto Renju Emperor Tournament - 1st round | ||||
| Date | 2004-11-28 | Rating | 2433.97 | |
| Round | Color | Result | Opponent | |
| 1 | White | Draw | Hara Masao | 2064.72 |
| 2 | Black | Win | Watanabe Tatsuya | 2082.15 |
| 3 | White | Loss | Ono Takayuki | 2290.86 |
| 4 | Black | Loss | Tadokoro Hosai | 1927.00 |
| The 2nd Shanghai Renju Meijin Invitation Tournament | ||||
| Date | 2004-05-04 | Rating | 2431.81 | |
| Round | Color | Result | Opponent | |
| White | Loss | Yamaguchi Yusui | 2589.46 | |
| White | Loss | Chen Lin | 2434.77 | |
| White | Draw | Li Hongbin | 2434.94 | |
| Black | Win | Ge Lingfeng | 2323.40 | |
| Black | Win | Xue Wenxi | 2378.23 | |
| Black | Win | Mitsumori Masao | 2249.85 | |
| Black | Win | Xu Bin | 2138.79 | |
| 4th Kanto Renju Emperor Tournament - 2nd round | ||||
| Date | 2003-11-30 | Rating | 2423.09 | |
| Round | Color | Result | Opponent | |
| White | Win | Nagao Noriaki | 2280.91 | |
| White | Win | Mitsumori Masao | 2266.19 | |
| White | Win | Maruta Koji | 2228.75 | |
| Black | Loss | Yamaguchi Yusui | 2593.74 | |
| Black | Loss | Okabe Hiroshi | 2557.97 | |
| 4th Kanto Renju Emperor Tournament - 1st round | ||||
| Date | 2003-11-16 | Rating | 2421.91 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Hiroki | 1933.63 |
| 2 | White | Win | Kato Yasuhiro | 2039.91 |
| 3 | Black | Win | Hara Masao | 2113.72 |
| 4 | Black | Loss | Okabe Hiroshi | 2557.33 |
| 41st Meijin-sen Tournament | ||||
| Date | 2003-09-15 | Rating | 2416.79 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Takashima Junya | 2341.75 |
| 2 | Black | Draw | Kuga Akio | 2383.15 |
| 3 | White | Loss | Kudomi Takahiro | 2340.21 |
| 4 | White | Draw | Matsuura Hiroshi | 2408.43 |
| 5 | White | Loss | Ishitani Shin-ichi | 2383.16 |
| 6 | White | Loss | Okabe Hiroshi | 2550.71 |
| 7 | White | Loss | Hasegawa Kazuto | 2625.70 |
| 8 | Black | Loss | Iio Yoshihiro | 2496.79 |
| 9 | Black | Loss | Miyagawa Junzo | 2262.27 |
| 41th Meijinsen Qualification: East Japan 2nd round | ||||
| Date | 2003-07-13 | Rating | 2429.04 | |
| Round | Color | Result | Opponent | |
| Black | Draw | Okabe Hiroshi | 2544.85 | |
| Black | Win | Suzuki Naoya | 2317.19 | |
| Black | Win | Sato Kiyotomi | 2299.68 | |
| Japan WC Qualification 2003 | ||||
| Date | 2003-03-22 | Rating | 2440.28 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Arita Nobuyoshi | 2184.47 |
| 2 | Black | Win | Iwata Akihisa | 2207.72 |
| 3 | White | Loss | Okabe Hiroshi | 2526.24 |
| 4 | White | Win | Mitsumori Masao | 2299.42 |
| 5 | Black | Win | Miyagawa Junzo | 2267.57 |
| 40th Meijin-sen Tournament | ||||
| Date | 2002-09-16 | Rating | 2446.56 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Matsuura Hiroshi | 2313.27 |
| 2 | White | Win | Okabe Hiroshi | 2474.68 |
| 3 | White | Draw | Hasegawa Kazuto | 2591.33 |
| 4 | Black | Draw | Iio Yoshihiro | 2432.35 |
| 5 | White | Loss | Takagawa Teiji | 2359.36 |
| 6 | Black | Win | Ishitani Shin-ichi | 2391.92 |
| 7 | Black | Draw | Kudomi Takahiro | 2392.88 |
| 8 | Black | Loss | Yamaguchi Yusui | 2590.09 |
| 9 | White | Loss | Nishimura Toshio | 2353.52 |
| 40th Meijinsen Qualification: East Japan 2nd round | ||||
| Date | 2002-07-14 | Rating | 2449.98 | |
| Round | Color | Result | Opponent | |
| White | Win | Sunagawa Shouki | 2171.33 | |
| White | Win | Nara Hideki | 2550.02 | |
| Black | Draw | Okabe Hiroshi | 2466.56 | |
| 40th Meijinsen Qualification: East Japan 1st round | ||||
| Date | 2002-06-02 | Rating | 2448.35 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Maruta Koji | 2207.76 |
| 2 | Black | Loss | Suzuki Naoya | 2265.96 |
| 3 | Black | Win | Kato Yasuhiro | 2097.96 |
| 4 | Black | Win | Kubo Izumi | 2209.22 |
| Japan WC Qualification tournament | ||||
| Date | 2001-03-24 | Rating | 2442.12 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Miyagawa Junzo | 2220.39 |
| 2 | Black | Loss | Miyoshi Takeo | 2190.92 |
| 3 | Black | Draw | Koiso Shigemasa | 2169.16 |
| 4 | Black | Win | Okabe Hiroshi | 2334.08 |
| 38th Meijinsen Qualification: East Japan 2nd round | ||||
| Date | 2000-07-02 | Rating | 2455.11 | |
| Round | Color | Result | Opponent | |
| Black | Win | Kusajima Masato | 2357.41 | |
| Black | Win | Kudomi Takahiro | 2355.38 | |
| Black | Draw | Mitsumori Masao | 2292.23 | |
| 38th Meijinsen Qualification: East Japan 1st round | ||||
| Date | 2000-06-04 | Rating | 2454.91 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Kusajima Masato | 2354.68 |
| 2 | Black | Win | Kudomi Takahiro | 2354.49 |
| 3 | Black | Win | Suzuki Naoya | 2171.40 |
| 4 | Black | Win | Maruta Koji | 2209.75 |
| World Championship 1999, BT | ||||
| Date | 1999-08-05 | Rating | 2416.33 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Chen Chen-Kuo | 2127.19 |
| 2 | White | Loss | Li Dong | 2078.83 |
| 3 | White | Win | Gaulitz Joachim | 2378.31 |
| 4 | White | Loss | Poghosyan Albert | 2328.31 |
| 5 | White | Win | Zhao Kai | 2141.37 |
| 6 | White | Win | Guan Jixian | 2054.89 |
| 8 | White | Win | Holgersson Goran | 2315.90 |
| “Compaq Cup” International Invitational Tournament | ||||
| Date | 1997-05-10 | Rating | 2426.41 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Shao Xiaodong | 2110.42 |
| 2 | White | Win | Holgersson Goran | 2329.26 |
| 3 | White | Win | Lu Yao | 1970.78 |
| 4 | White | Win | Karlsson Stefan | 2427.73 |
| 5 | White | Win | Nara Hideki | 2535.00 |
| 6 | Black | Win | Mitsumori Masao | 2324.61 |
| 7 | White | Loss | Ishitani Shin-ichi | 2319.15 |
| 8 | Black | Win | Zhang Jinyu | 2274.81 |
| 9 | Black | Draw | Li Dong | 2106.49 |
| 34th Meijin-sen Tournament | ||||
| Date | 1996-09-23 | Rating | 2394.54 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Nara Hideki | 2532.32 |
| 2 | Black | Draw | Nishimura Toshio | 2341.38 |
| 3 | White | Loss | Yamaguchi Yusui | 2426.48 |
| 4 | White | Draw | Maruyama Yasushi | 2196.04 |
| 5 | Black | Loss | Nishizono Norio | 2488.79 |
| 6 | White | Loss | Sagara Takashi | 2484.82 |
| 7 | White | Win | Ooi Kozo | 2313.38 |
| 8 | White | Win | Matsuura Hiroshi | 2166.80 |
| 9 | White | Loss | Hasegawa Kazuto | 2593.21 |
| Kyoto - 1200 | ||||
| Date | 1994-08-07 | Rating | 2414.58 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Sawai Toshio | 1737.52 |
| 2 | White | Win | Sunagawa Shouki | 2207.87 |
| 3 | White | Draw | Kawamura Norihiko | 2553.80 |
| 4 | White | Draw | Ishitani Shin-ichi | 2299.50 |
| 5 | Black | Win | Nara Hideki | 2553.41 |
| 6 | Black | Loss | Ooi Kozo | 2256.91 |
| 7 | White | Win | Nishimura Toshio | 2360.69 |
| The 13th Meijin-sen Match | ||||
| Date | 1975-12-03 | Rating | 2071.79 | |
| Round | Color | Result | Opponent | |
| 1 | White | Loss | Nakamura Shigeru | 2172.46 |
| 2 | Black | Draw | Nakamura Shigeru | 2172.46 |
| 3 | White | Loss | Nakamura Shigeru | 2172.46 |
| 4 | Black | Loss | Nakamura Shigeru | 2172.46 |
| The 12th Meijin-sen Match | ||||
| Date | 1973-10-08 | Rating | 2114.05 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 2076.48 |
| 2 | Black | Loss | Nishimura Toshio | 2076.48 |
| 3 | White | Win | Nishimura Toshio | 2076.48 |
| 4 | Black | Draw | Nishimura Toshio | 2076.48 |
| The 11th Meijin-sen Match | ||||
| Date | 1972-10-08 | Rating | 2122.14 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 2053.95 |
| 2 | Black | Draw | Nishimura Toshio | 2053.95 |
| 3 | White | Draw | Nishimura Toshio | 2053.95 |
| 4 | Black | Draw | Nishimura Toshio | 2053.95 |
| The 10th Meijin-sen Match | ||||
| Date | 1971-10-18 | Rating | 2125.58 | |
| Round | Color | Result | Opponent | |
| 1 | White | Draw | Nishimura Toshio | 2036.44 |
| 2 | Black | Loss | Nishimura Toshio | 2036.44 |
| 3 | White | Draw | Nishimura Toshio | 2036.44 |
| 4 | Black | Win | Nishimura Toshio | 2036.44 |
| 5 | Black | Draw | Nishimura Toshio | 2036.44 |
| The 9th Meijin-sen Match | ||||
| Date | 1970-10-10 | Rating | 2155.19 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 1992.07 |
| 2 | Black | Win | Nishimura Toshio | 1992.07 |
| 3 | White | Win | Nishimura Toshio | 1992.07 |
| The 8th Meijin-sen Match | ||||
| Date | 1969-10-11 | Rating | 2149.99 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 1982.88 |
| 2 | Black | Win | Nishimura Toshio | 1982.88 |
| 3 | White | Win | Nishimura Toshio | 1982.88 |
| The 7th Meijin-sen Match | ||||
| Date | 1968-10-20 | Rating | 2112.09 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Nishimura Toshio | 2006.69 |
| 2 | White | Loss | Nishimura Toshio | 2006.69 |
| 3 | White | Win | Nishimura Toshio | 2006.69 |
| 4 | Black | Loss | Nishimura Toshio | 2006.69 |
| 5 | White | Loss | Nishimura Toshio | 2006.69 |
| The 6th Meijin-sen Match | ||||
| Date | 1967-10-07 | Rating | 2123.79 | |
| Round | Color | Result | Opponent | |
| 1 | White | Win | Nishimura Toshio | 1980.00 |
| 2 | Black | Win | Nishimura Toshio | 1980.00 |
| 3 | Black | Win | Nishimura Toshio | 1980.00 |
| The 5th Meijin-sen Match | ||||
| Date | 1966-10-10 | Rating | 2098.27 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Nishimura Toshio | 1991.20 |
| 2 | White | Win | Nishimura Toshio | 1991.20 |
| 3 | Black | Win | Nishimura Toshio | 1991.20 |
| 4 | White | Loss | Nishimura Toshio | 1991.20 |
| 5 | Black | Win | Nishimura Toshio | 1991.20 |
| The 4th Meijin-sen Match | ||||
| Date | 1965-10-10 | Rating | 2082.55 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Win | Nishimura Toshio | 1992.49 |
| 2 | White | Win | Nishimura Toshio | 1992.49 |
| 3 | Black | Draw | Nishimura Toshio | 1992.49 |
| 4 | White | Win | Nishimura Toshio | 1992.49 |
| The 3rd Meijin-sen Match | ||||
| Date | 1964-11-16 | Rating | 2032.24 | |
| Round | Color | Result | Opponent | |
| 1 | Black | Loss | Nishimura Toshio | 2029.83 |
| 2 | White | Draw | Nishimura Toshio | 2029.83 |
| 3 | Black | Loss | Nishimura Toshio | 2029.83 |
| 4 | Black | Draw | Nishimura Toshio | 2029.83 |
| 5 | Black | Draw | Nishimura Toshio | 2029.83 |