Nakauchi, Mayumi
Current rating: 1469
Record: 22-24-2
| Grand Prix Hiroshima 2006 (CSP limited) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 46 | Matsuoka, Tomohide (1544) | Won 2-0 | +191521 |
| 2sealed | 104 | Suzuki, Shin (1601) | Draw 1-1 | +11522 |
| 3sealed | 63 | Koizumi, Kaoru (1519) | Lost 1-2 | -181504 |
| 4sealed | 130 | Tanaka, Yoshinori (1514) | Lost 1-2 | -181486 |
| 5sealed | 140 | Kawakami, Takahiro (1495) | Lost 0-2 | -171469 |
| top | average opponent: 1535record: 1-3-1 | new rating: 1469 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 44 | Satou, Kenji (1572) | Lost 0-2 | -181521 |
| 5sealed | 67 | Yano, Kunihiro (1522) | Lost 1-2 | -181503 |
| 6sealed | 81 | Yamane, Yoshiyuki (1484) | Lost 0-2 | -181485 |
| 7sealed | 95 | Seo, Asako (1466) | Draw 1-1 | 01485 |
| 8sealed | 87 | Ogura, Shigeru (1450) | Won 2-0 | +171502 |
| top | average opponent: 1499record: 1-3-1 | new rating: 1502 | ||
| Grand Prix Okayama 2004 (extended) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 8 | Kamei, Toru (1349) | Won 2-1 | +151562 |
| 2extended | 29 | Tanaka, Yoshinori (1501) | Won 2-0 | +161578 |
| 3extended | 37 | Shirakura, Tsuyoshi (1573) | Lost 1-2 | -181560 |
| 4extended | 92 | Ueta, Hiroki (1528) | Lost 0-2 | -181542 |
| 5extended | 104 | Mihara, Takumi (1427) | Won 2-0 | +161558 |
| 6extended | 75 | Kuroda, Toshiyuki (1593) | Lost 1-2 | -181540 |
| 7extended | 100 | Kobayasi, Yosihisa (1497) | Lost 1-2 | -191521 |
| 8extended | 90 | Takasaki, Masahumi (1483) | Won 2-1 | +181539 |
| top | average opponent: 1494record: 4-4 | new rating: 1539 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 93 | Okita, Kenichiro (1506) | Won 2-0 | +181520 |
| 2extended | 73 | Takagi, Takeshi (1581) | Lost 1-2 | -171503 |
| 3extended | 117 | Furukawa, Tadataka (1421) | Won 2-0 | +171520 |
| 4extended | 72 | Kusaka, Tadateru (1572) | Won 2-0 | +191539 |
| 5extended | 49 | Biwaki, Toshiaki (1639) | Won 2-1 | +201559 |
| 6extended | 22 | Ando, Nobuhiro (1646) | Lost 0-2 | -171542 |
| 7extended | 47 | Kuraoka, Shintarou (1533) | Won 2-0 | +181560 |
| 8extended | 40 | Nakata, Yoshihiko (1543) | Won 2-0 | +181578 |
| 9extended | 19 | Ikeda, Kei (1551) | Lost 0-2 | -191559 |
| 10extended | 28 | Kawasaki, Yasuhiro (1509) | Won 2-1 | +171576 |
| 11extended | 22 | Kashima, Akihiro (1775) | Lost 0-2 | -141562 |
| 12extended | 25 | Yano, Ryuji (1530) | Won 2-1 | +171579 |
| 13extended | 21 | Ishida, Itaru (1855) | Lost 1-2 | -131566 |
| 14extended | 22 | Nose, Koji (1501) | Lost 0-2 | -191547 |
| top | average opponent: 1583record: 8-6 | new rating: 1547 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 37 | Yamashita, Hideto (1500) | Lost 1-2 | -181464 |
| 2block | 421 | Shigekawa, Yusuke (1481) | Lost 0-2 | -181446 |
| 3block | 616 | Yamada, Keiichi (1464) | Lost 0-2 | -171429 |
| 4block | 621 | Fukuda, Hideo (1446) | Won 2-0 | +181447 |
| 5block | 505 | Kyoi, Yoshiaki (1464) | Won 2-0 | +181465 |
| 6block | 410 | Sasaki, Kaoru (1482) | Won 2-1 | +191484 |
| 7block | 335 | Kataoka, Daisuke (1499) | Won 2-0 | +181502 |
| 8block | 213 | Sakamoto, Kazuya (1504) | Lost 1-2 | -181484 |
| 9block | 199 | Muranaka, Nobutoshi (1499) | Won 2-0 | +181502 |
| top | average opponent: 1482record: 5-4 | new rating: 1502 | ||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 117 | Yamabayashi, Tomonori (1500) | Lost 0-2 | -181482 |
| 2sealed | 186 | Inami, Kazuyuki (1482) | Won 2-0 | +181500 |
| 3sealed | 121 | Fukuda, Takashi (1501) | Won 2-0 | +181518 |
| 4sealed | 67 | Hino, Toshiyuki (1501) | Lost 0-2 | -181500 |
| 5sealed | 92 | Miyazawa, Hisashi (1500) | Lost 1-2 | -181482 |
| 6sealed | 134 | Yamashita, Kohji (1482) | Lost 1-2 | -181464 |
| 7sealed | 121 | Kukita, Takenao (1463) | Won 2-0 | +181482 |
| top | average opponent: 1490record: 3-4 | new rating: 1482 | ||