Oza

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71st Oza

Organizers: The Nikkei, The Nihon Ki-in, Kansai Ki-in

Title match

Players 1st round2023-10-20MinatoTokyo 2nd round2023-10-27KyotoKyoto 3rd round2023-11-14KobeHyogo 4th round2023-11-30KofuYamanashi 5th round2023-12-08HadanoKanagawa
Iyama Yuta (Oza) W+R B+R W+R
Yu Zhengqi (8 dan) W+0.5 B+R

Tournament table

Players 1st round 2nd round Semifinals Challengerdecisionmatch
Taniguchi Toru(5d) Shibano ToramaruW+R06-08 Shibano ToramaruW+R07-03 Shibano ToramaruW+R08-17 Yu ZhengqiW+R09-14
Shibano Toramaru(M)
Oba Junya(8d) Murakawa DaisukeB+R06-01
Murakawa Daisuke(9d)
Kyo Kagen(9d) Kyo KagenB+R06-15 Kyo KagenB+R07-13
Seki Kotaro(T)
Hirose Yuichi(7d) Hirose YuichiB+R06-05
Sada Atsushi(7d)
Yu Zhengqi(8d) Yu ZhengqiW+R06-22 Yu ZhengqiB+R07-17 Yu ZhengqiW+1.509-07
Ida Atsushi(9d)
Anzai Nobuaki(8d) Anzai NobuakiW+R06-22
Yuki Satoshi(9d)
Ichiriki Ryo(K) Ichiriki RyoB+R06-01 Ichiriki RyoW+R07-07
Mitani Tetsuya(8d)
Cho U(9d) Kono RinB+0.506-05
Kono Rin(9d)

The last preliminary tournament

  • Players 1st round Final
    Shida Tatsuya(8d) Sada AtsushiW+R04-27
    Ohashi Naruya(7d) Sada AtsushiB+0.503-23
    Sada Atsushi(7d)
  • Players 1st round Final
    Oba Junya(7d) Oba JunyaB+R04-13
    Cho Chikun(HM) Cho ChikunB+R03-09
    Takao Shinji(9d)
  • Players 1st round Final
    Cho U(9d) Cho UW+3.505-01
    Cho Sonjin(9d) Suzuki ShinjiB+R03-23
    Suzuki Shinji(8d)
  • Players 1st round Final
    Nakano Hironari(9d) Ida AtsushiB+1.504-20
    Kim Sujun(9d) Ida AtsushiB+R03-23
    Ida Atsushi(9d)
  • Players 1st round Final
    Ichiriki Ryo(K) Ichiriki RyoW+R04-27
    Adachi Toshimasa(7d) Han ZenkiB+R03-09
    Han Zenki(8d)
  • Players 1st round Final
    Mitani Tetsuya(8d) Mitani TetsuyaB+R04-13
    Koike Yoshihiro(7d) Koike YoshihiroB+0.503-09
    Koyama Kuya(5d)
  • Players 1st round Final
    Muramoto Wataru(4d) Anzai NobuakiB+R04-13
    Anzai Nobuaki(8d) Anzai NobuakiW+R03-13
    Onishi Kenya(5d)
  • Players 1st round Final
    Hon Akiyoshi(5d) Kono RinB+R04-27
    Kono Rin(9d) Kono RinB+R03-20
    Tanaka Nobuyuki(4d)
  • Players 1st round Final
    Yuki Satoshi(9d) Yuki SatoshiW+7.504-13
    Son Makoto(7d) Nakane NaoyukiW+3.503-13
    Nakane Naoyuki(9d)
  • Players 1st round Final
    Onishi Ryuhei(7d) Taniguchi ToruB+R05-11
    Xie Yimin(7d) Taniguchi ToruB+R03-23
    Taniguchi Toru(5d)
  • Players 1st round Final
    Murakawa Daisuke(9d) Murakawa DaisukeW+R05-08
    Seto Taiki(8d) Hane NaokiB+R03-16
    Hane Naoki(9d)
  • Players Final
    Mochizuki Kenichi(8d) Hirose YuichiW+R03-23
    Hirose Yuichi(7d)

Preliminary tournament A

  • Players1st roundFinal
    Ri Ishu(8d) Mimura TomoyasuW+R12-22 Kim SujunW+R01-19
    Mimura Tomoyasu(9d)
    Obuchi Kotaro(5d) Kim SujunB+R12-15
    Kim Sujun(9d)
  • Players1st roundFinal
    Okuda Aya(4d) Onishi RyuheiB+R01-23 Onishi RyuheiW+R02-09
    Onishi Ryuhei(7d)
    Fukuoka Kotaro(4d) Fukuoka KotaroB+R12-15
    Terayama Rei(6d)
  • Players1st roundFinal
    Nakamura Shinya(9d) Cho ChikunB+0.512-15 Cho ChikunW+R01-19
    Cho Chikun(HM)
    Yamada Takuji(8d) Yamada TakujiW+7.512-15
    Ogaki Yusaku(9d)
  • Players1st roundFinal
    Sotoyanagi Sebun(5d) Sotoyanagi SebunW+R12-19 Han ZenkiW+R01-26
    O Meien(9d)
    Han Zenki(8d) Han ZenkiW+R12-15
    Kobayashi Satoru(9d)
  • Players1st roundFinal
    Shuto Shun(8d) O RisseiB+2.512-22 Koyama KuyaB+R02-02
    O Rissei(9d)
    Yamashita Keigo(9d) Koyama KuyaW+7.512-15
    Koyama Kuya(5d)
  • Players1st roundFinal
    Cho Riyu(9d) Cho RiyuB+2.512-15 Adachi ToshimasaB+R01-30
    Matsumoto Takehisa(8d)
    Uchida Shuhei(8d) Adachi ToshimasaB+R01-09
    Adachi Toshimasa(7d)
  • Players1st roundFinal
    Yamada Shinji(6d) Rin KanketsuW+5.512-22 Hirose YuichiB+1.502-02
    Rin Kanketsu(8d)
    Hirose Yuichi(7d) Hirose YuichiB+R01-19
    Hirata Tomoya(8d)
  • Players1st roundFinal
    Tsuruyama Atsushi(8d) Takao ShinjiW+R12-22 Takao ShinjiW+R02-09
    Takao Shinji(9d)
    Kanda Ei(9d) Suzuki AyumiB+R01-19
    Suzuki Ayumi(7d)
  • Players1st roundFinal
    Numadate Sakiya(7d) Numadate SakiyaB+1.501-12 Suzuki ShinjiW+4.501-26
    Motoki Katsuya(8d)
    Akiyama Jiro(9d) Suzuki ShinjiW+R12-22
    Suzuki Shinji(7d)
  • Players1st roundFinal
    Takeuchi Kosuke(4d) Fujita AkihikoW+R12-26 Kono RinW+1.502-16
    Fujita Akihiko(7d)
    So Yokoku(9d) Kono RinB+R12-19
    Kono Rin(9d)
  • Players1st roundFinal
    Sakai Yuki(4d) Mochizuki KenichiB+R12-26 Mochizuki KenichiB+R02-02
    Mochizuki Kenichi(8d)
    Nakamura Hidehito(9d) Moro ArisaW+R12-15
    Moro Arisa(2d)
  • Players1st roundFinal
    Mukai Chiaki(6d) Xie YiminB+R12-19 Xie YiminW+R01-19
    Xie Yimin(7d)
    Miyazawa Goro(9d)
  • Players1st roundFinal
    Tanaka Yuki(2d) Tanaka YukiB+R12-19 Cho UB+3.502-13
    Kanazawa Hideo(9d)
    Cho U(9d)
  • Players1st roundFinal
    Muramoto Wataru(4d) Muramoto WataruB+R12-26 Muramoto WataruW+R01-26
    Ogata Masaki(9d)
    Mito Shuhei(2d) Tsuruta KazushiB+1.512-26
    Tsuruta Kazushi(6d)
  • Players1st roundFinal
    Nishioka Masao(3d) Ohashi NaruyaW+R12-22 Ohashi NaruyaB+R01-26
    Ohashi Naruya(7d)
    Mutsuura Yuta(7d) Yamashiro HiroshiW+R12-22
    Yamashiro Hiroshi(9d)
  • Players1st roundFinal
    Yanaka Katsunori(8d) Otake YuW+R01-26 Tanaka NobuyukiW+R02-09
    Otake Yu(7d)
    Tanaka Nobuyuki(4d) Tanaka NobuyukiB+R12-26
    Hikosaka Naoto(9d)
  • Players1st roundFinal
    Yamamori Tadanao(7d) Imamura YoshiakiB+8.501-26 Ida AtsushiW+R02-09
    Imamura Yoshiaki(9d)
    Horimoto Mitsunari(5d) Ida AtsushiW+9.512-22
    Ida Atsushi(9d)
  • Players1st roundFinal
    Nakao Jungo(9d) Nakane NaoyukiB+4.512-15 Nakane NaoyukiW+1.502-02
    Nakane Naoyuki(9d)
    Shimojima Yohei(8d) Otani NaokiB+R12-26
    Otani Naoki(4d)
  • Players 1st round Semifinals Final
    Tanaka Koyu(4d) Tanaka KoyuW+6.510-26 Fujii ShuyaW+3.501-11 Taniguchi ToruB+R02-01
    Yukawa Mitsuhisa(9d)
    Okuma Yuto(1d) Fujii ShuyaB+R09-28
    Fujii Shuya(8d)
    Hoshikawa Manabu(3d) Sato YutaW+6.510-05 Taniguchi ToruW+R12-21
    Sato Yuta(3d)
    Meyer Francis(1d) Taniguchi ToruW+R09-14
    Taniguchi Toru(5d)
  • Players 1st round Semifinals Final
    Wu Boyi(5d) Wu BoyiB+3.510-19 Wu BoyiB+1.501-11 Murakawa DaisukeW+1.502-22
    Kunisawa Hiroto(4d)
    Nishi Takenobu(5d) Nishi TakenobuB+R09-21
    Mine Yasuhiro(4d)
    Yamazaki Yoshihiro(9d) Nishimura JinB+R12-14 Murakawa DaisukeW+R02-08
    Nishimura Jin(1d)
    Imabun Taro(3d) Murakawa DaisukeW+R11-30
    Murakawa Daisuke(9d)
  • Players 1st round Semifinals Final
    Tsuji Shigehito(4d) Kiyonari TetsuyaB+2.510-12 Kiyonari TetsuyaW+R02-01 Yuki SatoshiB+R02-15
    Kiyonari Tetsuya(9d)
    Deguchi Mariko(1d) Deguchi MarikoB+R01-18
    Konishi Kazuko(8d)
    Kumaki Teruya(1d) Kumaki TeruyaDefault11-17 Yuki SatoshiW+1.512-07
    Yokota Shigeaki(9d)
    Watanabe Yu(3d) Yuki SatoshiW+R10-12
    Yuki Satoshi(9d)
  • Players 1st round Semifinals Final
    Utsumi Koki(3d) Sato YoheiB+0.510-05 Hoshikawa TakumiW+1.512-21 Hon AkiyoshiW+R01-25
    Sato Yohei(1d)
    Hoshikawa Takumi(5d) Hoshikawa TakumiB+R12-07
    Nakano Yasuhiro(9d)
    Ha Youngil(7d) Ha YoungilW+0.510-12 Hon AkiyoshiW+6.512-21
    Hara Masakazu(4d)
    Watanabe Kandai(3d) Hon AkiyoshiB+3.511-09
    Hon Akiyoshi(5d)