Kou, Changsu
Current rating: 1735 (#4567)
Record: 99-67-1 (GP) / 4-8 (professional)
- 2007
- 2008
- 2009
- 2010
- 2011
- 2012
- 2013
- 2014
- 2017
- 2019
- 2020
- 2023
| Regional Championships Aichi 2023 (pioneer) | starting rating: 1731 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 121 | Kawata, Kazuki (1524) | Won 2-0 | +141745 |
| 2pioneer | 1 | Hashizume, Hayato (1609) | Lost 0-2 | -201725 |
| 3pioneer | 82 | Shimokawabe, Akinari (1422) | Won 2-1 | +121737 |
| 4pioneer | 54 | Nakamura, Kazuhiro (1670) | Won 2-0 | +171754 |
| 5pioneer | 34 | Adachi, Naohiko (1572) | Won 2-0 | +151769 |
| 6pioneer | 11 | Kamizono, Naoki (1835) | Lost 1-2 | -171752 |
| 7pioneer | 39 | Nam, Sung Wook (1808) | Lost 0-2 | -171735 |
| top | average opponent: 1634record: 4-3 | new rating: 1735 | ||
| Players Tour Nagoya 2020 (pioneer) | starting rating: 1760 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 64 | Wilks, James (1790) | Won 2-0 | +191779 |
| 2draft | 93 | Meredith, Damon (1742) | Lost 1-2 | -191760 |
| 3draft | 83 | Iwazaki, Yuuta (1869) | Won 2-1 | +201780 |
| 4pioneer | 29 | Lee, Shi Tian (2019) | Lost 0-2 | -141766 |
| 5pioneer | 37 | Iwazaki, Yuuta (1862) | Lost 1-2 | -161750 |
| 6pioneer | 71 | Chen, Mingyang (1683) | Lost 1-2 | -191731 |
| top | average opponent: 1828record: 2-4 | new rating: 1731 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1751 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 228 | Tsujimoto, Shingo (1547) | Won 2-0 | +151766 |
| 2standard | 165 | Nakae, Hirotaka (1435) | Won 2-0 | +121778 |
| 3standard | 352 | Kashiwa, Tomohiro (1564) | Lost 0-2 | -221756 |
| 4standard | 360 | Ando, Masanori9484 (1553) | Won 2-0 | +141770 |
| 5standard | 238 | Gotou, Hiroaki (1617) | Lost 0-2 | -201750 |
| 6standard | 526 | Kinomoto, Takuya (1521) | Won 2-1 | +131763 |
| 7standard | 180 | Mihara, Makihito (1797) | Lost 1-2 | -171746 |
| 8standard | 351 | Kayahira, Tomoya (1522) | Won 2-0 | +141760 |
| top | average opponent: 1569record: 5-3 | new rating: 1760 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1796 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 182 | Uehara, Masayuki (1518) | Won 2-0 | +131809 |
| 3modern | 316 | Yatori, Naoyuki (1527) | Lost 1-2 | -231786 |
| 4modern | 702 | Norimasa, Norimasa (1513) | Lost 0-2 | -231763 |
| 5modern | 1024 | Morioka, Ryota (1492) | Won 2-0 | +131776 |
| 6modern | 427 | Furusho, Kotaro (1388) | Lost 0-2 | -251751 |
| top | average opponent: 1488record: 2-3 | new rating: 1751 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1867 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 719 | Yuge, Tatsurou (1493) | Lost 0-2 | -241843 |
| 4modern | 926 | Okano, Hiroki (1555) | Lost 1-2 | -231820 |
| 5modern | 970 | Takeuchi, Shusuke (1468) | Lost 0-2 | -241796 |
| top | average opponent: 1505record: 0-3 | new rating: 1796 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1795 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 110 | Arai, Yuusuke (Aichi) (1500) | Won 2-0 | +131808 |
| 3sealed | 67 | Kawabata, Sho (1446) | Won 2-1 | +111819 |
| 4sealed | 68 | Yang, Jun-mo (1557) | Won 2-0 | +141833 |
| 5sealed | 51 | Shimizu, Ryouta (1593) | Lost 0-2 | -231810 |
| 6sealed | 69 | Fujimura, Kazuaki (1578) | Won 2-0 | +141824 |
| 7sealed | 18 | Ebihara, Hirotaka (1659) | Lost 0-2 | -211803 |
| 8sealed | 67 | Ishikawa, Tomoyasu (1592) | Won 2-0 | +141817 |
| 9sealed | 84 | Nakamura, Satoshi (Tokyo) (1574) | Won 2-1 | +141831 |
| 10draft | 57 | Kawai, Hiroki1988 (1563) | Lost 0-2 | -231808 |
| 11draft | 67 | Kato, Yoshinari (1570) | Won 2-0 | +141822 |
| 12draft | 57 | Shiroza, Shinichiro (1662) | Won 2-0 | +151837 |
| 13draft | 42 | Hirano, Takatoshi (1616) | Won 2-0 | +141851 |
| 14draft | 31 | Motomura, Shigeru (1760) | Won 2-1 | +161867 |
| 15draft | 29 | Arita, Kento (1717) | ID | 01867 |
| top | average opponent: 1599record: 10-3-1 | new rating: 1867 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1762 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 156 | Ishii, Hiroyuki (1611) | Won 2-1 | +151777 |
| 4standard | 74 | Hamaguchi, Masakuni (1423) | Won 2-1 | +121789 |
| 5standard | 19 | Yanase, Kaname (1604) | Won 2-0 | +151804 |
| 6standard | 8 | Murata, Toshiaki (1773) | Lost 1-2 | -191785 |
| 7standard | 53 | Miyakawa, Toshihiro (1570) | Lost 0-2 | -221763 |
| 8standard | 109 | Furusato, Hiroshi (1594) | Won 2-0 | +151778 |
| 9standard | 198 | Sano, Futoshi (1645) | Won 2-1 | +161794 |
| 10standard | 91 | Ishiwada, Hiroyuki (1524) | Won 2-0 | +131807 |
| 11standard | 39 | Hagiwara, Masakatsu (1595) | Won 2-0 | +141821 |
| 12standard | 34 | Tagomori, Shou (1625) | Won 2-1 | +151836 |
| 13standard | 22 | Date, Tsutomu (1633) | Lost 0-2 | -221814 |
| 14standard | 41 | Nagashima, Makoto (1746) | Lost 1-2 | -191795 |
| 15standard | 33 | Hirayama, Atsushi (1734) | ID | 01795 |
| top | average opponent: 1621record: 8-4-1 | new rating: 1795 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1703 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 107 | Tsurifune, Takashi (1472) | Won 2-0 | +141717 |
| 4standard | 127 | Maruyama, Satoshi (1520) | Won 2-1 | +141731 |
| 5standard | 77 | Yamashita, Hidetoshi (1718) | Lost 0-2 | -181713 |
| 6standard | 71 | Syoujiki, Tomoya (1531) | Won 2-0 | +151728 |
| 7standard | 103 | Kanou, Yuuki (1549) | Won 2-1 | +141742 |
| 8standard | 61 | Kuniba, Hiroki (1592) | Won 2-0 | +161758 |
| 9standard | 13 | Oonishi, Takahisa (1571) | Lost 1-2 | -221736 |
| 10standard | 26 | Babasaki, Taro (1602) | Won 2-0 | +161752 |
| 11standard | 23 | Nakaoka, Koshiro (1610) | Won 2-0 | +151767 |
| 12standard | 27 | Komuro, Shuu (1911) | Lost 1-2 | -151752 |
| 13standard | 24 | Biwaki, Toshiaki (1675) | Won 2-0 | +171769 |
| 14standard | 24 | Jo, Bunkun (1635) | Won 2-0 | +151784 |
| 15standard | 20 | Omonishi, Kojiro (1555) | Lost 1-2 | -221762 |
| top | average opponent: 1611record: 9-4 | new rating: 1762 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1703 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 32 | Niimi, Kiyoaki (1668) | Won 2-1 | +181721 |
| 4sealed | 742 | Tanigaki, Toshiyuki (1519) | Lost 0-2 | -221699 |
| 5sealed | 19 | Sutou, Takuo (1713) | Lost 1-2 | -181681 |
| 6sealed | 110 | Ooshima, Shun (1491) | Won 2-1 | +151696 |
| 7sealed | 46 | Shin, Takahiro (1571) | Won 2-0 | +161712 |
| 8sealed | 176 | K., Haruki (1576) | Lost 0-2 | -211691 |
| 9sealed | 250 | Fujita, Osamu 834 (1568) | Won 2-1 | +161707 |
| 10sealed | 58 | Nakayama, Yuuki (1518) | Won 2-1 | +141721 |
| 11sealed | 32 | Gao, Tan (1672) | Won 2-1 | +181739 |
| 12draft | 80 | Noreika, Simon (1632) | Lost 1-2 | -201719 |
| 13draft | 71 | Hori, Daisuke (1667) | Lost 0-2 | -191700 |
| 14draft | 75 | Takeishi, Kouji (1807) | Won 2-1 | +201720 |
| 15draft | 30 | Kobayashi, Takahito (1789) | Lost 0-2 | -171703 |
| top | average opponent: 1630record: 7-6 | new rating: 1703 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1737 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 193 | Natsume, Takuya (1481) | Won 2-1 | +141751 |
| 4standard | 61 | Nakatani, Hiroki (1534) | Lost 1-2 | -221729 |
| 5standard | 219 | Terajima, Kazuma (1492) | Won 2-1 | +141743 |
| 6standard | 240 | Taniguchi, Hiroaki (1717) | Lost 1-2 | -191724 |
| 7standard | 285 | Kadono, Satoru (1563) | Lost 1-2 | -211703 |
| top | average opponent: 1557record: 2-3 | new rating: 1703 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1700 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 111 | Tsurifune, Takashi (1437) | Won 2-1 | +131713 |
| 4modern | 132 | Tanaka, Kouichi (1762) | Lost 1-2 | -171696 |
| 5modern | 114 | Nishizawa, Taichi (1496) | Won 2-1 | +141710 |
| 6modern | 197 | Kanazawa, Ryo (1554) | Won 2-1 | +151725 |
| 7modern | 114 | Sakamoto, Akihito (1523) | Won 2-1 | +151740 |
| 8modern | 67 | Kaneko, Yoshiyuki (1720) | Won 2-0 | +171757 |
| 9modern | 20 | Traboco, Manuel (1581) | Lost 1-2 | -211736 |
| 10modern | 35 | Kanazawa, Shuu (1588) | Won 2-1 | +161752 |
| 11modern | 31 | Yasooka, Shota (2107) | Won 2-0 | +241776 |
| 12modern | 23 | Arita, Kento (1613) | Lost 1-2 | -211755 |
| 13modern | 36 | Omori, Ken'ichirou (1770) | Won 2-1 | +181773 |
| 14modern | 34 | Endo, Ryota (1912) | Lost 1-2 | -151758 |
| 15modern | 47 | Kawate, Junpei (1634) | Lost 1-2 | -211737 |
| top | average opponent: 1669record: 8-5 | new rating: 1737 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1759 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 200 | Furuta, Yusuke (1568) | Won 2-0 | +151774 |
| 3sealed | 14 | Shigehara, Toshinori (1687) | Lost 0-2 | -201754 |
| 4sealed | 238 | Kondo, Hirotsugu (1432) | Lost 1-2 | -241730 |
| 5sealed | 391 | Kawai, Hiroki (1559) | Won 2-1 | +151745 |
| 6sealed | 241 | Yamazaki, Hiroyuki (1454) | Lost 0-2 | -231722 |
| 7sealed | 285 | Kaestner-Frenchman, Ben (1478) | Lost 0-2 | -221700 |
| top | average opponent: 1529record: 2-4 | new rating: 1700 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1750 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 61 | Imai, Kouhei (1520) | Won 2-0 | +141764 |
| 3standard | 80 | Kanno, Masayoshi (1529) | Won 2-0 | +141778 |
| 4standard | 79 | Itodani, Tetsurou (1567) | Won 2-0 | +141792 |
| 5standard | 3 | Nakajima, Chikara (1993) | Lost 1-2 | -141778 |
| 6standard | 70 | Takao, Shota (1698) | Won 2-1 | +161794 |
| 7standard | 38 | Yamasaki, Yoshitaka (1630) | Lost 1-2 | -211773 |
| 8standard | 106 | Oiso, Masashi (1968) | Lost 0-2 | -141759 |
| top | average opponent: 1701record: 4-3 | new rating: 1759 | ||
| Grand Prix Kobe 2011 (extended) | starting rating: 1644 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 177 | Nagamoto, Kouji (1470) | Won 2-0 | +151659 |
| 2extended | 92 | Ota, Keisuke (1569) | Won 2-0 | +161675 |
| 3extended | 82 | Sakimura, Akihiko (1536) | Lost 0-2 | -201655 |
| 4extended | 186 | Hattori, Taiki (1589) | Won 2-0 | +161671 |
| 5extended | 94 | Kato, Akinori (1520) | Won 2-1 | +161687 |
| 6extended | 54 | Satou, Chika (1509) | Won 2-1 | +141701 |
| 7extended | 38 | Ito, Tomoki (1579) | Won 2-1 | +161717 |
| 8extended | 23 | Harada, Daisaku (1686) | Won 2-0 | +181735 |
| 9extended | 7 | Yasooka, Shota (1981) | Lost 1-2 | -141721 |
| 10extended | 40 | Itou, Kouei (1579) | Won 2-1 | +151736 |
| 11extended | 28 | Mitamura, Kazuya (1925) | Lost 1-2 | -141722 |
| 12extended | 8 | Itodani, Tetsurou (1559) | Won 2-1 | +151737 |
| 13extended | 12 | Yokoi, Masaki (1629) | Lost 0-2 | -201717 |
| 14extended | 15 | Nakamura, Junya (1636) | Won 2-0 | +161733 |
| 15extended | 37 | Fujita, Tsuyoshi (1679) | Won 2-1 | +171750 |
| top | average opponent: 1630record: 11-4 | new rating: 1750 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 165 | Fujiyama, Ryuuichi (1518) | Won 2-1 | +161641 |
| 3extended | 129 | Ishihara, Akiho (1537) | Won 2-1 | +161657 |
| 4extended | 33 | Urasawa, Taiji (1555) | Won 2-1 | +161673 |
| 5extended | 5 | Narumiya, Ryuuma (1575) | Won 2-1 | +171690 |
| 6extended | 20 | Shimizu, Naoki (1966) | Won 2-0 | +221712 |
| 7extended | 13 | Matsushima, Yuuya (1587) | Won 2-1 | +161728 |
| 8extended | 37 | Tsuba, Yuuki (1510) | Lost 1-2 | -221706 |
| 9extended | 11 | Kudo, Koichi (1672) | Lost 0-2 | -181688 |
| 10extended | 43 | Niimi, Kiyoaki (1686) | Lost 0-2 | -181670 |
| 11extended | 46 | Nakayama, Takatsugu (1550) | Lost 1-2 | -211649 |
| 12extended | 56 | Nagami, Youichi (1521) | Won 2-1 | +161665 |
| 13extended | 51 | Takahashi, Tetsuhiro (1587) | Won 2-0 | +171682 |
| 14extended | 38 | Wachi, Shinya (1693) | Lost 1-2 | -181664 |
| 15extended | 43 | Nakada, Ryo (1547) | Lost 1-2 | -201644 |
| top | average opponent: 1607record: 8-6 | new rating: 1644 | ||
| Grand Prix Kitakyushu 2009 (ZEN limited) | starting rating: 1616 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 28 | Murata, Kouji (1508) | Lost 1-2 | -201596 |
| 3sealed | 173 | Shono, Takanari (1502) | Won 2-0 | +161612 |
| 4sealed | 156 | Nakamura, Junpei (1551) | Lost 1-2 | -191593 |
| 5sealed | 128 | Miura, Tadayuki (1451) | Won 2-0 | +151608 |
| 6sealed | 83 | Umeno, Yoshihiro (1727) | Won 2-1 | +211629 |
| 7sealed | 55 | Inoue, Shinta (1530) | Lost 1-2 | -201609 |
| 8sealed | 96 | Kadono, Takayuki (1514) | Won 2-1 | +161625 |
| top | average opponent: 1541record: 4-3 | new rating: 1625 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1636 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 25 | Shiota, Akihiko (1500) | Lost 0-2 | -201616 |
| top | record: 0-1 | new rating: 1616 | ||
| Grand Prix Kobe 2009 (extended) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 7 | Morita, Masahiko (2040) | Lost 1-2 | -91519 |
| 5extended | 54 | Imai, Masakatsu (1593) | Won 2-0 | +191538 |
| 6extended | 59 | Kubouchi, Naoki (1744) | Draw 1-1 | +41542 |
| 7extended | 109 | Abe, Motoki (1480) | Won 2-0 | +171559 |
| 8extended | 123 | Ishikawa, Masayo (1815) | Won 2-0 | +221581 |
| 9extended | 33 | Goto, Yusei (1573) | Lost 0-2 | -181563 |
| 10extended | 12 | Asahara, Akira (1975) | Lost 1-2 | -111552 |
| 11extended | 38 | Sekine, Kiyotaka (1558) | Won 2-0 | +181570 |
| 12extended | 39 | Nakano, Yoshitaka (2032) | Won 2-0 | +261596 |
| 13extended | 28 | Tanaka, Hisaya (1714) | Won 2-1 | +201616 |
| 14extended | 9 | Tominaga, Mario (1727) | Won 2-0 | +201636 |
| top | average opponent: 1750record: 7-3-1 | new rating: 1636 | ||
| Pro Tour Kyoto 2009 (CON standard) | starting rating: 1547 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 50 | Moiseev, Dmitry (1753) | Won 2-0 | +221569 |
| 2standard | 76 | Lanese, Ivan (1736) | Won 2-0 | +211590 |
| 3standard | 1 | Zimmerman, Nathan (1639) | Lost 0-2 | -171573 |
| 4standard | 55 | Orsini Jones, Matteo (1656) | Lost 1-2 | -171556 |
| 5draft | 165 | Szleifer, Gadiel (1762) | Lost 0-2 | -141542 |
| 6draft | 119 | Ueda, Katsuya (1769) | Lost 0-2 | -141528 |
| top | average opponent: 1719record: 2-4 | new rating: 1528 | ||
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 113 | Ootsuka, Tomomi (1489) | Lost 1-2 | -181469 |
| 3sealed | 103 | Oota, Kouhei (1414) | Won 2-0 | +171486 |
| 4sealed | 125 | Juumonji, Tarou (1478) | Lost 0-2 | -181468 |
| 5sealed | 194 | Konishi, Hideaki (1483) | Won 2-0 | +181486 |
| 6sealed | 190 | Iyanaga, Junya (1880) | Won 2-0 | +251511 |
| 7sealed | 32 | Taniguchi, Hiroaki (1510) | Won 2-0 | +181529 |
| 8sealed | 76 | Matsugami, Shigeo (1554) | Won 2-0 | +181547 |
| top | average opponent: 1544record: 5-2 | new rating: 1547 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 152 | Katou, Ichirou (1536) | Lost 1-2 | -171483 |
| 3standard | 192 | Miyazaki, Satoshi (1500) | Won 2-0 | +181501 |
| 4standard | 112 | Koyama, Kenta (1593) | Lost 1-2 | -161485 |
| 5standard | 292 | Satou, Dai (1590) | Lost 0-2 | -161469 |
| 6standard | 262 | Hondou, Shin ya (1481) | Won 2-0 | +181487 |
| 7standard | 191 | Nishitani, Yasunobu (1518) | Won 2-0 | +181505 |
| 8standard | 150 | Sumii, Hiroyuki (1467) | Lost 0-2 | -181487 |
| top | average opponent: 1526record: 3-4 | new rating: 1487 | ||