Ratings
IWASAKI Masaaki (Japan)
Japanese name(s): 岩崎匡明146 tournaments
827 results
Player ID: 6955
Rated T454 in Japan and T549 in Asia&Oceania&Africa and T679 in the World
Latest rating: 1810
827 results
Player ID: 6955
Rated T454 in Japan and T549 in Asia&Oceania&Africa and T679 in the World
Latest rating: 1810
- 2025
- 2024
- 2023
- 2020
- 2019
- 2018
- 2017
- 2016
- 2015
- 2014
- 2013
- 2012
- 2011
- 2010
- 2009
- 2008
- 2007
- 2006
- 2005
- 2004
- 2003
- 2001
- 2000
- 1997
- 1995
- 1994
- 1993
- 1992
- 1991
2025-09-20: 51_All_Japan_Tokai_prelim(Japan)
2025-08-30: 20_Fukuroi_open(Japan)
2025-08-16: 5_Iwata_endurance_A(Japan)
2025-07-26: 19_Fikuroi_open(Japan)
2025-06-28: 18_Fukuroi_open(Japan)
2025-05-05: 4_Iwata_endurance_2(Japan)
2025-03-29: 17_Fukuroi_open(Japan)
2025-03-16: 45_Meijin(Japan)
2025-03-15: 45_Meijin_team(Japan)
2025-02-16: 2025_Tokai_expert_games(Japan)
2025-01-04: 2025_New_year_conference(Japan)
| MIYAZAKI Jun | 45-19 | IWASAKI Masaaki |
| MUKAI Daisuke | 60-04 | IWASAKI Masaaki |
| IWASAKI Masaaki | 55-09 | FUJITA Toshiko |
| FUJIMOTO Masaki | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 43-21 | FUJITA Mahiro |
| ASAKAWA Takuya | 53-11 | IWASAKI Masaaki |
| OKUDAIRA Akio | 42-22 | IWASAKI Masaaki |
| ARAKI Yasuyuki | 52-12 | IWASAKI Masaaki |
| IWASAKI Masaaki | 43-21 | FUJITA Toshiko |
| IWASAKI Masaaki | 49-15 | FUJITA Mahiro |
| IWASAKI Masaaki | 37-27 | TAKEUCHI Ren |
| IWASAKI Masaaki | 33-31 | MURAKAMI Hiroshi |
| HASEGAWA Takeshi | 33-31 | IWASAKI Masaaki |
| NAGAO Hiroto | 38-26 | IWASAKI Masaaki |
| FUJITA Takeshi | 37-27 | IWASAKI Masaaki |
| TAKEUCHI Ren | 41-23 | IWASAKI Masaaki |
| IWASAKI Masaaki | 49-15 | FUKUSHI Kei |
| IWASAKI Masaaki | 48-16 | FUJIMOTO Masaki |
| HARABAYASHI Ryo | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 47-17 | FUJITA Mahiro |
| IWASAKI Masaaki | 32-32 | ARAKI Yasuyuki |
| FUJIMOTO Kenta | 48-16 | IWASAKI Masaaki |
| IWATA Kosuke | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 40-24 | FUJITA Takeshi |
| MIYAZAKI Yuji | 52-12 | IWASAKI Masaaki |
| FUJIMOTO Masaki | 44-20 | IWASAKI Masaaki |
| MURAKAMI Hiroshi | 40-24 | IWASAKI Masaaki |
| IWASAKI Masaaki | 52-12 | FUJITA Shouta |
| HATTORI Kouki | 32-32 | IWASAKI Masaaki |
| IWASAKI Masaaki | 48-16 | HOSOKAWA Akira |
| IWATA Kosuke | 45-19 | IWASAKI Masaaki |
| NAKAMURA Kiyomasa | 34-30 | IWASAKI Masaaki |
| NAGAO Hiroto | 46-18 | IWASAKI Masaaki |
| IWASAKI Masaaki | 46-18 | FUJITA Mahiro |
| FURUYA Hiroyuki | 34-30 | IWASAKI Masaaki |
| FUJIMOTO Kenta | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 56-08 | NOGUCHI Kiyouko |
| FUJITA Takeshi | 42-22 | IWASAKI Masaaki |
| MUKAI Yuuto | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 40-24 | FUJITA Mahiro |
| IWATA Kosuke | 45-19 | IWASAKI Masaaki |
| IWASAKI Masaaki | 42-22 | FUJIMOTO Kenta |
| IWASAKI Masaaki | 38-26 | FURUYA Hiroyuki |
| IWASAKI Masaaki | 40-24 | ARAKI Yasuyuki |
| MEISHO Shigeki | 64-00 | IWASAKI Masaaki |
| HAMOTO Kazuhiro | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | 64-00 | OKUDA Tsuyoshi |
| NARA Souma | won against | IWASAKI Masaaki |
| ASAHINA Satoshi | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | OKAMOTO Ayane |
| TANAKA Tetsuya | won against | IWASAKI Masaaki |
| GOTO Hiroshi | 51-13 | IWASAKI Masaaki |
| IWASAKI Masaaki | 45-19 | YANO Yasushi |
| IWASAKI Masaaki | 40-24 | NISHIMURA Akihiro |
| OKAMOTO Ayane | 40-24 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | MIYAMOTO Sukehiro |
| FURUYA Hiroyuki | 37-27 | IWASAKI Masaaki |
| TOHIKA Ken | 38-26 | IWASAKI Masaaki |
| ARAKI Yasuyuki | 53-11 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | MORITA Aito |
| FUJIMOTO Masaki | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 38-26 | MIZUNO Keigo |
| IWASAKI Masaaki | 40-24 | TOHIKA Ken |
| OKUDAIRA Fuyumi | 40-24 | IWASAKI Masaaki |
| KOBAYASHI Manabu | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 52-12 | FUJITA Toshiko |
| IWASAKI Masaaki | 40-24 | MIZUNO Keigo |
| ARAKI Yasuyuki | 38-26 | IWASAKI Masaaki |
2024-10-20: 14_Fukuroi_open(Japan)
2024-08-25: 1_Fuijieda_open(Japan)
2024-08-11: 2_Iwata_endurance_open_2(Japan)
2024-06-30: 50_All_Japan_Tokai_prelim_12_Fukuroi_open(Japan)
2024-06-15: 11_Fukuroi_open(Japan)
2024-03-17: 44_Meijin(Japan)
2024-03-16: 44_Meijin_masters(Japan)
2024-03-03: 2024_Tokai_expert_games(Japan)
2024-02-18: 9_Fukuroi_open(Japan)
2024-01-21: New_Year_conference(Japan)
2024-01-07: 99_Hamamatsu_meeting(Japan)
| IWASAKI Masaaki | 33-31 | HATTORI Kouki |
| FUJITA Takeshi | 41-23 | IWASAKI Masaaki |
| IWASAKI Masaaki | 58-06 | IWATA Kosuke |
| OKUDAIRA Fuyumi | 34-30 | IWASAKI Masaaki |
| MORITA Aito | 54-10 | IWASAKI Masaaki |
| IWASAKI Masaaki | 37-27 | YOSHIKAWA Chiaki |
| IWASAKI Masaaki | 46-18 | FUJIMOTO Masaki |
| FUJIMOTO Kenta | 41-23 | IWASAKI Masaaki |
| FUJITA Takeshi | 33-31 | IWASAKI Masaaki |
| MIZUNO Keigo | 57-07 | IWASAKI Masaaki |
| IWASAKI Masaaki | 37-27 | KURITA Huzio |
| FUJITA Toshiko | 32-32 | IWASAKI Masaaki |
| NORIMITSU Ayumi | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 58-06 | FUJITA Mahiro |
| OHGA Nao | 43-21 | IWASAKI Masaaki |
| FUJITA Takeshi | 36-28 | IWASAKI Masaaki |
| MUKAI Daisuke | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 52-12 | FUJITA Shouta |
| FUJIMOTO Kenta | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 43-21 | ASAKAWA Takuya |
| IWASAKI Masaaki | 35-29 | TOHIKA Ken |
| MIYAZAKI Jun | 43-21 | IWASAKI Masaaki |
| IWASAKI Masaaki | 45-19 | FURUYA Hiroyuki |
| IWASAKI Masaaki | 33-31 | FUJIMOTO Kenta |
| IWASAKI Masaaki | 48-16 | MATSUSHITA Shigehiro |
| IWASAKI Masaaki | 40-24 | OKUDAIRA Fuyumi |
| FUJITA Takeshi | 51-13 | IWASAKI Masaaki |
| IWASAKI Masaaki | 44-20 | KOBAYASHI Manabu |
| UMEZAWA Yoshinori | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | YAMASHITA Koji |
| MITSUYA Nobuaki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | 64-00 | ANDRIANI Bintsa |
| LAM Maverick | won against | IWASAKI Masaaki |
| TOJO Atsushi | won against | IWASAKI Masaaki |
| KUMAGAYA Genki | won against | IWASAKI Masaaki |
| OSHIMIZU Takanori | 43-21 | IWASAKI Masaaki |
| TAKIZAWA Nobuyuki | 48-16 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | NISHIMURA Akihiro |
| IWASAKI Masaaki | 45-19 | IKEHATA Keiko |
| NAKAHAMA Kumi | 42-22 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | OKUDAIRA Akio |
| FUJIMOTO Kenta | 45-19 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | TAYAMA Tsubasa |
| OKUDAIRA Fuyumi | 44-20 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | YOSHIKAWA Chiaki |
| IWASAKI Masaaki | 56-08 | FUJIMOTO Masaki |
| NISHIBAYASHI Touya | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | FUJIMOTO Masaki |
| FURUYA Hiroyuki | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 49-15 | MATSUSHITA Shigehiro |
| FUJITA Takeshi | 48-16 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | HAKKAKU Mitsuki |
| FUJIMOTO Kenta | 47-17 | IWASAKI Masaaki |
| IWASAKI Masaaki | 40-24 | MATSUSHITA Shigeo |
| MATSUSHITA Shigeo | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | FURUYA Hiroyuki |
| IWASAKI Masaaki | 51-13 | OKINAWA Takuto |
| FUJITA Takeshi | 38-26 | IWASAKI Masaaki |
| FUJIMOTO Kenta | 35-29 | IWASAKI Masaaki |
| TOHIKA Ken | 47-17 | IWASAKI Masaaki |
| FUJIMOTO Masaki | 57-07 | IWASAKI Masaaki |
| IWASAKI Masaaki | 44-20 | NOGUCHI Kiyouko |
| IWASAKI Masaaki | 64-00 | HASEGAWA Toshi |
| MATSUMOTO Kuichi | 45-19 | IWASAKI Masaaki |
| IWASAKI Masaaki | 47-17 | MATSUSHITA Shigehiro |
| IWASAKI Masaaki | 37-27 | FURUYA Hiroyuki |
2023-12-16: 2023_othello_tournament(Japan)
2023-11-19: 8_Fukuroi_open(Japan)
2023-10-29: 49_All_Japan_Tokai_prelim(Japan)
2023-10-15: 7_Fukuroi_open(Japan)
2023-09-16: 6_Fukuroi_open(Japan)
2023-08-12: 98_Hamamatsu_meeting_A(Japan)
2023-06-10: 4_Fukuroi_open(Japan)
2023-05-04: Shizuoka_championship_2023(Japan)
| OKUDAIRA Fuyumi | 51-13 | IWASAKI Masaaki |
| IWASAKI Masaaki | 48-16 | MATSUSHITA Shigehiro |
| MUKAI Daisuke | 38-26 | IWASAKI Masaaki |
| FUJIMOTO Kenta | 46-18 | IWASAKI Masaaki |
| IWASAKI Masaaki | 37-27 | MATSUSHITA Shigeo |
| MATSUSHITA Shigeo | 32-32 | IWASAKI Masaaki |
| IWASAKI Masaaki | 47-17 | MATSUSHITA Shigehiro |
| IWASAKI Masaaki | 34-30 | FURUYA Hiroyuki |
| IWASAKI Masaaki | 34-30 | FUJITA Takeshi |
| YOSHIKAWA Chiaki | 35-29 | IWASAKI Masaaki |
| MATSUSHITA Shigeo | 39-25 | IWASAKI Masaaki |
| ASAKAWA Takuya | 49-15 | IWASAKI Masaaki |
| IWASAKI Masaaki | 46-18 | FUJITA Mahiro |
| IWASAKI Masaaki | 48-16 | MARI Hana |
| IWASAKI Masaaki | 53-11 | TOHIKA Ken |
| IWASAKI Masaaki | 36-28 | FUJITA Takeshi |
| ARAKI Yasuyuki | 49-15 | IWASAKI Masaaki |
| IWASAKI Masaaki | 54-10 | FUJITA Toshiko |
| FUJIMOTO Kenta | 48-16 | IWASAKI Masaaki |
| IWASAKI Masaaki | 42-22 | SUZUKI Takao |
| IWASAKI Masaaki | 38-26 | FUJITA Takeshi |
| MIYAGAWA Keigo | 39-25 | IWASAKI Masaaki |
| FUJIMOTO Masaki | 32-32 | IWASAKI Masaaki |
| IWASAKI Masaaki | 45-19 | TOHIKA Ken |
| OKUDAIRA Fuyumi | 38-26 | IWASAKI Masaaki |
| HATTORI Kouki | 43-21 | IWASAKI Masaaki |
| IWASAKI Masaaki | 38-26 | FURUYA Hiroyuki |
| IWASAKI Masaaki | 45-19 | MUKAI Daisuke |
| OKUDAIRA Akio | 32-32 | IWASAKI Masaaki |
| IWASAKI Masaaki | 46-18 | MATSUSHITA Shigeo |
| IWASAKI Masaaki | 36-28 | FUJIMOTO Kenta |
| IWASAKI Masaaki | 35-29 | FURUYA Hiroyuki |
| FUJITA Takeshi | 41-23 | IWASAKI Masaaki |
| IWASAKI Masaaki | 39-25 | TAKAHASHI Hisashi |
| IWASAKI Masaaki | 50-14 | FUJIMOTO Masaki |
| HATTORI Kouki | 50-14 | IWASAKI Masaaki |
| OHMORI Keita | 49-15 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | FURUYA Hiroyuki |
| NAKAHAMA Kumi | 37-27 | IWASAKI Masaaki |
| MIYAGAWA Keigo | 54-10 | IWASAKI Masaaki |
| IWASAKI Masaaki | 63-01 | FUJIMOTO Masaki |
| NAKANO Shota | 34-30 | IWASAKI Masaaki |
| MIYAGAWA Keigo | 52-12 | IWASAKI Masaaki |
| FUJIMOTO Kenta | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 59-05 | FUJITA Toshiko |
2020-01-26: 97_Hamamatsu_meeting(Japan)
| OKADA Hiroyuki | 43-21 | IWASAKI Masaaki |
| MIZUNO Keigo | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 44-20 | FUJIMOTO Masaki |
| MATSUMOTO Sora | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 53-11 | YUKA Takaaki |
2019-11-10: year_forgetting_conference_2019(Japan)
2019-11-03: 48_All_Japan_Tokai_prelim(Japan)
2019-09-15: 13_Shizuoka_open(Japan)
2019-08-24: 94_Hamamatsu_meeting(Japan)
2019-08-11: Shizuoka_championship_2019(Japan)
2019-06-22: 92_Hamamatsu_meeting(Japan)
2019-05-04: 49_blue_sky_conference(Japan)
2019-04-25: 30_Shizuoka_Festival_13_Shizuoka_open(Japan)
2019-02-17: 2019_Shizuoka_expert_games(Japan)
| IWASAKI Masaaki | 33-31 | FUNATSU Asuka |
| TESAKI Satoru | 37-27 | IWASAKI Masaaki |
| HAYASAKA Toshie | 48-16 | IWASAKI Masaaki |
| IWASAKI Masaaki | 57-07 | SHINODA Yuki |
| IWASAKI Masaaki | 50-14 | NAKANISHI Tsugi |
| SATO Reiko | 48-16 | IWASAKI Masaaki |
| ASAKAWA Takuya | 40-24 | IWASAKI Masaaki |
| IWASAKI Masaaki | 42-22 | AMANO Doushu |
| SANO Hirotaka | 34-30 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | ARAKI Yasuyuki |
| MUKAI Daisuke | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 56-08 | FUJIMOTO Kenta |
| NAMIKI Kazunari | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 41-23 | YUKA Takaaki |
| IWASAKI Masaaki | 64-00 | HASEGAWA Toshi |
| IWASAKI Masaaki | 48-16 | FUJITA Koichi |
| IWASAKI Masaaki | 51-13 | ONODA Katsuo |
| IWASAKI Masaaki | 39-25 | ABE Yoichi |
| IWASAKI Masaaki | 52-12 | KURITA Huzio |
| IWASAKI Masaaki | 51-13 | ISHIGAMI Etsuo |
| IWASAKI Masaaki | 53-11 | NAKANISHI Tsugi |
| FUJITA Takeshi | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 48-16 | FUJIMOTO Masaki |
| MIZUNO Keigo | 35-29 | IWASAKI Masaaki |
| TAKAHASHI Ya | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 39-25 | MATSUMOTO Kuichi |
| IWASAKI Masaaki | 51-13 | ONO Maaya |
| IWASAKI Masaaki | 40-24 | SHIOSAWA Kousuke |
| IWASAKI Masaaki | 38-26 | ARAKI Yasuyuki |
| ENOMOTO Hiroyuki | 49-15 | IWASAKI Masaaki |
| MURAKAMI Takeshi | 51-13 | IWASAKI Masaaki |
| MATSUMOTO Kuichi | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 56-08 | FUJITA Koichi |
| KAWAI Shinobu | 35-29 | IWASAKI Masaaki |
| OKUDAIRA Akio | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | NAKANISHI Tsugi |
| IWASAKI Masaaki | 55-09 | OTA Tokiko |
| IWASAKI Masaaki | 34-30 | TANAKA Chikako |
| OHTSUBO Hidetaka | 35-29 | IWASAKI Masaaki |
| ENOMOTO Hiroyuki | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 60-04 | SUZUKI Takahiro |
| IWASAKI Masaaki | 44-20 | SATO Reiko |
| KURITA Huzio | 42-22 | IWASAKI Masaaki |
| IWASAKI Masaaki | 58-06 | ISHIGAMI Etsuo |
| IWASAKI Masaaki | 49-15 | YUKA Takaaki |
| ENOMOTO Hiroyuki | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 46-18 | TOMIBE Norikiyo |
| TESAKI Satoru | 57-07 | IWASAKI Masaaki |
| IWASAKI Masaaki | 64-00 | HASEGAWA Toshi |
| ITO Azumi | 45-19 | IWASAKI Masaaki |
| IWASAKI Masaaki | 52-12 | TOMIBE Hiroshi |
| IWASAKI Masaaki | 46-18 | KAWATA Tetsu |
2018-11-04: 47_All_Japan_Tokai_prelim(Japan)
2018-10-07: 23_Yamanashi_open(Japan)
2018-09-16: 12_Shizuoka_open(Japan)
2018-08-11: 90_Hamamatsu_meeting(Japan)
| ENOMOTO Hiroyuki | 38-26 | IWASAKI Masaaki |
| ITO Azumi | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 53-11 | MAEDA Shikari |
| FURANSU Ibanderu | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 42-22 | NITTA Shuuhei |
| IWASAKI Masaaki | 35-29 | YOSHIKAWA Chiaki |
| MURAKAMI Takeshi | 49-15 | IWASAKI Masaaki |
| IWASAKI Masaaki | 44-20 | FUJIWARA Asuka |
| OHMORI Keita | 58-06 | IWASAKI Masaaki |
| KURACHI Takayuki | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 44-20 | NAKANO Itaru |
| IWASAKI Masaaki | 60-04 | NAKANO Ookazu |
| SUGIYAMA Akemi | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | KURITA Huzio |
| IWASAKI Masaaki | 49-15 | ONODA Katsuo |
| IWASAKI Masaaki | 46-18 | SUGIYAMA Mitsuaki |
| IWASAKI Masaaki | 45-19 | FUJITA Koichi |
| IWASAKI Masaaki | 39-25 | YUKA Takaaki |
| IWASAKI Masaaki | 49-15 | FUJITA Koichi |
| FUJITA Takeshi | 38-26 | IWASAKI Masaaki |
| ITO Azumi | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 58-06 | FUJIMOTO Masaki |
| OSIHI Akira | 43-21 | IWASAKI Masaaki |
2017-08-12: 89_Hamamatsu_meeting(Japan)
2017-05-04: 47_Blue_Sky_conf(Japan)
| IWASAKI Masaaki | 57-07 | UMEGAE Yuuya |
| IWASAKI Masaaki | 34-30 | NAMIKI Kazunari |
| IWASAKI Masaaki | 33-31 | ITO Azumi |
| MUKAI Daisuke | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 60-04 | OSIHI Akira |
| IWASAKI Masaaki | 36-28 | TAKESHIMA Sakihiro |
| TAKESHIMA Sakihiro | 35-29 | IWASAKI Masaaki |
| KOZUKA Katsuhiko | 34-30 | IWASAKI Masaaki |
| IWASAKI Masaaki | 44-20 | KOZUKA Katsuhiko |
| ITO Azumi | 58-06 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | ITO Azumi |
| FUJITA Koichi | 39-25 | IWASAKI Masaaki |
| IWAKURA Hiroaki | 64-00 | IWASAKI Masaaki |
| IWASAKI Masaaki | 57-07 | IWAKURA Hiroaki |
2016-12-11: year_forgetting_conf_2016(Japan)
2016-08-11: 88_Hamamatsu_meeting(Japan)
2016-06-26: 44_All_Japan_Tokai_prelim(Japan)
2016-06-05: 44_All_Japan_Tokai_prelim(Japan)
2016-04-09: Shizuoka_championship_2016(Japan)
| OHMORI Keita | 47-17 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | SATO Masuo |
| OHTSUBO Hidetaka | 34-30 | IWASAKI Masaaki |
| MUKAI Daisuke | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 58-06 | HASEGAWA Toshi |
| IWASAKI Masaaki | 39-25 | TSUCHIYA Ryosuke |
| OHTSUBO Hidetaka | 43-21 | IWASAKI Masaaki |
| IWASAKI Masaaki | 38-26 | FUJITA Takeshi |
| IWASAKI Masaaki | 33-31 | KAWAMURA Yoshihiro |
| IWASAKI Masaaki | 36-28 | FUJITA Koichi |
| IWASAKI Masaaki | 58-06 | KAWATA Tetsu |
| IWASAKI Masaaki | 42-22 | SATO Masuo |
| TAKAHASHI Shiu | 46-18 | IWASAKI Masaaki |
| IWASAKI Masaaki | 42-22 | NAMIKI Kazunari |
| SANO Hirotaka | 41-23 | IWASAKI Masaaki |
| YUKA Takaaki | 42-22 | IWASAKI Masaaki |
| IWASAKI Masaaki | 38-26 | MUKAI Daisuke |
| IWASAKI Masaaki | 45-19 | HASEGAWA Toshi |
| IWASAKI Masaaki | 49-15 | FUJIMOTO Kenta |
| IWASAKI Masaaki | 36-28 | ENOMOTO Hiroyuki |
| ARAKI Yasuyuki | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 46-18 | KAWATA Tetsu |
| IWASAKI Masaaki | 41-23 | ABE Yoichi |
| IWASAKI Masaaki | 64-00 | KURITA Huzio |
| IWASAKI Masaaki | 55-09 | YOSHINO Nobuko |
| IWASAKI Masaaki | 59-05 | SATO Masuo |
2015-07-05: 3_Shizuoka_open(Japan)
2015-06-21: 43_All_Japan_Tokai_prelim(Japan)
2015-04-26: 45_Blue_Sky_conference(Japan)
2015-03-29: 85_Hamamatsu_meeting(Japan)
2015-02-08: 2015_Shizuoka_expert_games(Japan)
2015-01-11: new_year_conference(Japan)
| ITO Yuta | 43-21 | IWASAKI Masaaki |
| IWASAKI Masaaki | 56-08 | OZAKI Yoshito |
| IWASAKI Masaaki | 38-26 | ARAKI Yasuyuki |
| TAKAGI Yosuke | 40-24 | IWASAKI Masaaki |
| IWASAKI Masaaki | 59-05 | ABE Yoichi |
| TAKAGI Yosuke | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 43-21 | SATO Masuo |
| ARAKI Yasuyuki | 46-18 | IWASAKI Masaaki |
| MUKAI Daisuke | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 52-12 | OZAKI Yoshito |
| IWASAKI Masaaki | 50-14 | FUJITA Takeshi |
| IWASAKI Masaaki | 44-20 | HASEGAWA Toshi |
| TAKAGI Yosuke | 47-17 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | KAWAMURA Yoshihiro |
| IWASAKI Masaaki | 51-13 | YUKA Takaaki |
| TANAKA Atsushi | 34-30 | IWASAKI Masaaki |
| IWASAKI Masaaki | 37-27 | KOYASHIKI Ken |
| IWASAKI Masaaki | 35-29 | FUJITA Takeshi |
| IWASAKI Masaaki | 49-15 | KAWAMURA Toyoto |
| IWASAKI Masaaki | 51-13 | MIZUNO Keigo |
| SUZUKI Takahiro | 45-19 | IWASAKI Masaaki |
| IWASAKI Masaaki | 38-26 | TAKAGI Yosuke |
| YOSHIYUKI Suganuma | 41-23 | IWASAKI Masaaki |
| TANAKA Atsushi | 43-21 | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | SANO Hirotaka |
| NAMIKI Kazunari | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 50-14 | KAWATA Tetsu |
| IWASAKI Masaaki | 52-12 | OZAKI Yoshito |
| FUJITA Takeshi | 49-15 | IWASAKI Masaaki |
| IWASAKI Masaaki | 56-08 | KAWATA Tetsu |
| IWASAKI Masaaki | 57-07 | OZAKI Yoshito |
| TANAKA Atsushi | 36-28 | IWASAKI Masaaki |
| SANO Hirotaka | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | NAGAYA Toshiko |
2014-08-17: 84_Hamamatsu_meeting(Japan)
2014-08-16: 27_Inuyama_open(Japan)
2014-06-22: 42_All_Japan_Shizuoka_prelim(Japan)
2014-06-08: 42_All_Japan_Hamamatsu_prelim(Japan)
2014-04-27: 44_Blue_sky_conference(Japan)
2014-04-13: Shizuoka championship 2014(Japan)
2014-03-30: 83_Hamamatsu_meeting(Japan)
2014-02-16: 2014_Shizuoka_expert_games(Japan)
2014-01-04: 82_Hamamatsu_meeting(Japan)
| IWASAKI Masaaki | 47-17 | NOGUCHI Kiyouko |
| IWASAKI Masaaki | 57-07 | NAGAYA Toshiko |
| KAWAMURA Toyoto | 51-13 | IWASAKI Masaaki |
| FUJITA Takeshi | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | SUZUKI Takahiro |
| YOSHIYUKI Suganuma | 33-31 | IWASAKI Masaaki |
| NAKAMORI Chiaki | 36-28 | IWASAKI Masaaki |
| HAGA Kazutoshi | 39-25 | IWASAKI Masaaki |
| INAGAKI Shinobu | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 41-23 | MIURA Hideki |
| HADA Jun | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | MUKAI Daisuke |
| ENOMOTO Hiroyuki | 50-14 | IWASAKI Masaaki |
| IWASAKI Masaaki | 50-14 | HASEGAWA Toshi |
| IWASAKI Masaaki | 61-03 | KAWATA Tetsu |
| IWASAKI Masaaki | 50-14 | FUJITA Takeshi |
| SANO Hirotaka | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 54-10 | HASEGAWA Toshi |
| TANAKA Atsushi | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 38-26 | FUJITA Takeshi |
| ARAKI Yasuyuki | 48-16 | IWASAKI Masaaki |
| ENOMOTO Hiroyuki | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | NAMIKI Kazunari |
| IWASAKI Masaaki | 44-20 | OTA Keiichi |
| IWASAKI Masaaki | 53-11 | SATO Endo |
| ARAKI Yasuyuki | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 44-20 | MIZUNO Keigo |
| MABUCHI Yuta | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | KOZUKA Katsuhiko |
| IWASAKI Masaaki | 38-26 | SANO Hirotaka |
| NAGAO Hiroto | 40-24 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | SATO Masuo |
| IWASAKI Masaaki | 46-18 | FUKASAWA Keisuke |
| NAMIKI Kazunari | 34-30 | IWASAKI Masaaki |
| TAKIGAWA Mitsuaki | 41-23 | IWASAKI Masaaki |
| NAGAO Hiroto | 35-29 | IWASAKI Masaaki |
| OHE Yoshimaru | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | TAKAHASHI Hisashi |
| IWASAKI Masaaki | 46-18 | OKAMA Ayumi |
| IWASAKI Masaaki | 46-18 | MAEZIMA Tomiko |
| IWASAKI Masaaki | 43-21 | NAGAYA Toshiko |
| NAMIKI Kazunari | 45-19 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | SANO Hirotaka |
| MUKAI Daisuke | 47-17 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | TANAKA Atsushi |
| ARAKI Yasuyuki | 48-16 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | NAGAO Hiroto |
| TOMOTA Yusuke | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 50-14 | TAKIGAWA Mitsuaki |
| IWASAKI Masaaki | 54-10 | YOSHIKAWA Chiaki |
| IWASAKI Masaaki | 46-18 | TSUKAMOTO Hiroaki |
2013-11-24: year_forgetting_conf_2013(Japan)
2013-08-11: 81_Hamamatsu_meeting(Japan)
2013-06-30: 41_All_Japan_Shizuoka_prelim(Japan)
2013-06-02: 41_All_Japan_Tokai_prelim(Japan)
2013-05-06: 43_blue_sky_conference(Japan)
2013-04-07: 80_Hamamatsu_meeting(Japan)
2013-03-10: 2013_Shizuoka_expert_games(Japan)
2013-01-06: 79_Hamamatsu_meeting(Japan)
| IWASAKI Masaaki | 45-19 | OZAKI Yoshito |
| IWASAKI Masaaki | 36-28 | IWAMOTO Yoshiki |
| ENOMOTO Hiroyuki | 48-16 | IWASAKI Masaaki |
| IWASAKI Masaaki | 46-18 | SANO Hirotaka |
| NAGAO Hiroto | 37-27 | IWASAKI Masaaki |
| KAZUHISA Tagami | 55-09 | IWASAKI Masaaki |
| IWASAKI Masaaki | 51-13 | TOKUSHIMA Kanon |
| IWASAKI Masaaki | 38-26 | SATO Endo |
| IWASAKI Masaaki | 53-11 | OZAKI Yoshito |
| SUZUKI Takahiro | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 46-18 | ARAKI Yasuyuki |
| TANAKA Atsushi | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 58-06 | HASEGAWA Toshi |
| IWASAKI Masaaki | 40-24 | SUGIYAMA Mitsuaki |
| IWASAKI Masaaki | 57-07 | SATO Masuo |
| MUKAI Daisuke | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 64-00 | IIJIMA Shuichi |
| IWASAKI Masaaki | 46-18 | SATO Masuo |
| SANO Hirotaka | 36-28 | IWASAKI Masaaki |
| ARAKI Yasuyuki | 55-09 | IWASAKI Masaaki |
| FUJITA Takeshi | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 41-23 | WATASE Seijin |
| FUJITA Takeshi | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 48-16 | MATSUI Kazuma |
| OHMORI Keita | 49-15 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | KAWAMURA Toyoto |
| IWASAKI Masaaki | 35-29 | SAKURAI Yuka |
| ARAKI Yasuyuki | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | TANAKA Atsushi |
| IWASAKI Masaaki | 46-18 | KAWAMURA Toyoto |
| FUJITA Takeshi | 45-19 | IWASAKI Masaaki |
| MIZUNO Keigo | 41-23 | IWASAKI Masaaki |
| IWASAKI Masaaki | 50-14 | NAGAYA Toshiko |
| IWASAKI Masaaki | 64-00 | ETSUKO Satoshi |
| IWASAKI Masaaki | 37-27 | MUKAI Daisuke |
| IWASAKI Masaaki | 36-28 | ENOMOTO Hiroyuki |
| IWASAKI Masaaki | 40-24 | MARUYAMA Satowa |
| ARAKI Yasuyuki | 40-24 | IWASAKI Masaaki |
| IWASAKI Masaaki | 45-19 | OZAKI Yoshito |
| IWASAKI Masaaki | 45-19 | YOSHIKAWA Chiaki |
| TOMOTA Yusuke | 36-28 | IWASAKI Masaaki |
| NAGAO Hiroto | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | MUKAI Daisuke |
| IWASAKI Masaaki | 44-20 | MIZUNO Keigo |
2012-12-09: year_forgetting_conf_2012(Japan)
2012-08-12: 78_Hamamatsu_meeting(Japan)
2012-06-24: 40_All_Japan_Tokai_prellim(Japan)
2012-05-06: 42 blue sky conference(Japan)
2012-03-25: 77_Hamamatsu_meeting(Japan)
2012-02-05: 2012_Shizuoka_expert_game(Japan)
2012-01-15: 76_Hamamatsu_meeting(Japan)
| IWASAKI Masaaki | 42-22 | KURITA Huzio |
| ARAKI Yasuyuki | 50-14 | IWASAKI Masaaki |
| IWASAKI Masaaki | 52-12 | OKABE Michiaki |
| IWASAKI Masaaki | 57-07 | MUKAI Daisuke |
| IWASAKI Masaaki | won against | TAKAHASHI Shiu |
| IWASAKI Masaaki | 42-22 | KAWAMURA Toyoto |
| TANAKA Atsushi | 37-27 | IWASAKI Masaaki |
| YOSHIYUKI Suganuma | 46-18 | IWASAKI Masaaki |
| IWASAKI Masaaki | 38-26 | ITO Chihiro |
| IWASAKI Masaaki | 48-16 | MIZUNO Keigo |
| TANAKA Atsushi | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 54-10 | KURITA Huzio |
| IWASAKI Masaaki | 49-15 | YOSHIKAWA Chiaki |
| ARAKI Yasuyuki | 41-23 | IWASAKI Masaaki |
| IWASAKI Masaaki | 40-24 | OZAKI Yoshito |
| FUJITA Takeshi | 46-18 | IWASAKI Masaaki |
| TANAKA Atsushi | 55-09 | IWASAKI Masaaki |
| IWASAKI Masaaki | 44-20 | ITO Chihiro |
| IWASAKI Masaaki | 47-17 | MABUCHI Yuta |
| MUKAI Daisuke | 42-22 | IWASAKI Masaaki |
| IWASAKI Masaaki | 37-27 | OTA Keiichi |
| IWASAKI Masaaki | 59-05 | KURITA Huzio |
| IWASAKI Masaaki | 47-17 | OHE Yoshimaru |
| TANAKA Atsushi | 52-12 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | MUKAI Daisuke |
| FUJITA Takeshi | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 39-25 | SUZUKI Takahiro |
| IWASAKI Masaaki | 38-26 | MIZUNO Keigo |
| NAMIKI Kazunari | 46-18 | IWASAKI Masaaki |
| IWASAKI Masaaki | 40-24 | TANAKA Atsushi |
| IWASAKI Masaaki | 52-12 | OKABE Michiaki |
| ARAKI Yasuyuki | 39-25 | IWASAKI Masaaki |
| TATEISHI Katsuhiro | 42-22 | IWASAKI Masaaki |
| IWASAKI Masaaki | 42-22 | SANO Hirotaka |
| IWASAKI Masaaki | 35-29 | KOBAYASHI Manabu |
| IWASAKI Masaaki | 41-23 | YONEZAWA Masamitsu |
| IWASAKI Masaaki | 34-30 | TAKAGI Yosuke |
| KURODA Takuji | 46-18 | IWASAKI Masaaki |
| IWASAKI Masaaki | 39-25 | ITO Chihiro |
2011-12-04: year_forgetting_conf_2011(Japan)
2011-08-14: 75_Hamamatsu_meeting(Japan)
2011-06-12: 39_Japan_champ_Tokai_prelim(Japan)
2011-04-17: Shizuoka championship 2011(Japan)
2011-04-03: 74_Hamamatsu_meeting(Japan)
2011-02-13: 2001_Shizuoka_expert_game(Japan)
2011-02-06: new_year_conference(Japan)
2011-01-09: Hamamatsu_open(Japan)
| IWASAKI Masaaki | 54-10 | SUGIYAMA Mitsuaki |
| YOSHINO Nobuko | 64-00 | IWASAKI Masaaki |
| IWASAKI Masaaki | 53-11 | SUZUKI Toyoharu |
| IZUMI Shinichi | 34-30 | IWASAKI Masaaki |
| IWASAKI Masaaki | 64-00 | MIZUNO Keigo |
| IWASAKI Masaaki | 50-14 | SANO Hirotaka |
| TOMOTA Yusuke | 37-27 | IWASAKI Masaaki |
| ENOMOTO Hiroyuki | 54-10 | IWASAKI Masaaki |
| IWASAKI Masaaki | 56-08 | MIZUNO Keigo |
| FUJITA Takeshi | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 53-11 | KAWATA Tetsu |
| TATEISHI Katsuhiro | 48-16 | IWASAKI Masaaki |
| OZAKI Yoshito | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 41-23 | TAKAHASHI Shiu |
| SUZUKI Takahiro | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 58-06 | HASEGAWA Toshi |
| NAMIKI Kazunari | 38-26 | IWASAKI Masaaki |
| OZAKI Yoshito | 38-26 | IWASAKI Masaaki |
| IWASAKI Masaaki | 42-22 | SATO Masuo |
| MIZUNO Keigo | 33-31 | IWASAKI Masaaki |
| OKABE Michiaki | 40-24 | IWASAKI Masaaki |
| IWASAKI Masaaki | 50-14 | KAGEYAMA Toshi |
| IZUMI Shinichi | 43-21 | IWASAKI Masaaki |
| TAKAHASHI Shiu | 43-21 | IWASAKI Masaaki |
| FUJITA Takeshi | 57-07 | IWASAKI Masaaki |
| IWASAKI Masaaki | 55-09 | HASEGAWA Toshi |
| NAMIKI Kazunari | 40-24 | IWASAKI Masaaki |
| ARAKI Yasuyuki | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 38-26 | MUKAI Daisuke |
| IWASAKI Masaaki | 37-27 | SANO Hirotaka |
| SUZUKI Takahiro | 34-30 | IWASAKI Masaaki |
| IWASAKI Masaaki | 47-17 | OZAKI Yoshito |
| IWASAKI Masaaki | 36-28 | OZAKI Yoshito |
| ARAKI Yasuyuki | 55-09 | IWASAKI Masaaki |
| IWASAKI Masaaki | 54-10 | OKABE Michiaki |
| NAMIKI Kazunari | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | SUGIYAMA Mitsuaki |
| IWASAKI Masaaki | 64-00 | SHIHO Kazuhiro |
| ENOMOTO Hiroyuki | 47-17 | IWASAKI Masaaki |
| TATEISHI Katsuhiro | 34-30 | IWASAKI Masaaki |
| IWASAKI Masaaki | 46-18 | TAKESHIMA Sakihiro |
| IWASAKI Masaaki | 64-00 | OTA You |
| IWASAKI Masaaki | 38-26 | OZAKI Yoshito |
2010-12-12: 73_Hamamatsu_meeting(Japan)
2010-11-21: year_forgetting_conf_2010(Japan)
2010-08-29: 5_Ouza_sen(Japan)
2010-08-15: 72_Hamamatsu_meeting(Japan)
2010-07-18: CH_Japan(Japan)
2010-06-27: 38_Japan_Champ_Tokai_prelim(Japan)
2010-06-13: 38_Japan_Champ_Tokai_prelim(Japan)
2010-04-11: Shizuoka championship 2010(Japan)
2010-04-04: 71_Hamamatsu_meeting(Japan)
2010-03-21: 31_Meijin(Japan)
2010-02-14: 31_Shizouka_expert_game(Japan)
2010-01-24: 2010_Hamamatsu_open(Japan)
2010-01-17: 2010_New_Year_conference(Japan)
| IWASAKI Masaaki | 45-19 | GOTO Yasuhide |
| IWASAKI Masaaki | 43-21 | SUZUKI Takahiro |
| UMEMURA Yuji | 43-21 | IWASAKI Masaaki |
| IWASAKI Masaaki | 37-27 | NAGAO Hiroto |
| OHMORI Keita | 45-19 | IWASAKI Masaaki |
| IWASAKI Masaaki | 53-11 | KURITA Huzio |
| IWASAKI Masaaki | 51-13 | HASEGAWA Toshi |
| IWASAKI Masaaki | 47-17 | MIZUNO Keigo |
| IWASAKI Masaaki | 34-30 | ENOMOTO Hiroyuki |
| URUSHIHARA Kazuhiro | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | KURAHASHI Satoshi |
| TANAKA Shuntaro | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 44-20 | AOKI Takayoshi |
| OHMORI Keita | 41-23 | IWASAKI Masaaki |
| SATO Reiko | 37-27 | IWASAKI Masaaki |
| KURODA Takuji | 54-10 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | TAKIGAWA Mitsuaki |
| NAMIKI Kazunari | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 41-23 | TANAKA Atsushi |
| IWASAKI Masaaki | 39-25 | TATEISHI Katsuhiro |
| IWASAKI Masaaki | 37-27 | FUJITA Takeshi |
| MATSUMOTO Hiroyuki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | KODAMA Satoshi |
| IWASAKI Masaaki | won against | SANO Hirotaka |
| AIHARA Shigeaki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | SAITO Shigehiro |
| AKASHI Tomone | won against | IWASAKI Masaaki |
| ARAKI Yasuyuki | 48-16 | IWASAKI Masaaki |
| NAGAO Hiroto | 34-30 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | TOKUSHIMA Akira |
| IWASAKI Masaaki | 51-13 | SUZUKI Takahiro |
| OHMORI Keita | 37-27 | IWASAKI Masaaki |
| TOMOTA Yusuke | 40-24 | IWASAKI Masaaki |
| IWASAKI Masaaki | 56-08 | YOSHIKAWA Chiaki |
| TERADA Junya | 50-14 | IWASAKI Masaaki |
| ENOMOTO Hiroyuki | 48-16 | IWASAKI Masaaki |
| IWASAKI Masaaki | 52-12 | SATO Masuo |
| IWASAKI Masaaki | 48-16 | FUJIWARA Toshi Masa |
| IWASAKI Masaaki | 54-10 | TATEISHI Katsuhiro |
| IWASAKI Masaaki | 63-01 | KOBAYASHI Tome |
| ARAKI Yasuyuki | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 41-23 | NAMIKI Kazunari |
| IWASAKI Masaaki | 41-23 | TAKIGAWA Mitsuaki |
| IWASAKI Masaaki | 53-11 | SANO Hirotaka |
| IWASAKI Masaaki | 33-31 | SUZUKI Takahiro |
| TATEISHI Katsuhiro | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 45-19 | IMAMURA Hiroshi |
| IWASAKI Masaaki | 42-22 | OZAKI Yoshito |
| IWASAKI Masaaki | 36-28 | IZUMI Shinichi |
| OKAMOTO Junya | 64-00 | IWASAKI Masaaki |
| IWASAKI Masaaki | 64-00 | IWATA Hiroyuki |
| IWASAKI Masaaki | 64-00 | UMEMURA Yuji |
| NAGANO Yasushi | 64-00 | IWASAKI Masaaki |
| IWASAKI Masaaki | 64-00 | MATSUMOTO Hiroshi |
| IWASAKI Masaaki | 64-00 | KATO Yuzuru |
| IWASAKI Masaaki | 34-30 | NAGAYA Toshiko |
| KOBAYASHI Hiroko | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 43-21 | MUKAI Daisuke |
| IWASAKI Masaaki | 38-26 | SANO Hirotaka |
| TOMOTA Yusuke | 34-30 | IWASAKI Masaaki |
| IWASAKI Masaaki | 38-26 | NAMIKI Kazunari |
| IWASAKI Masaaki | 33-31 | TAKESHIMA Iida |
| IWASAKI Masaaki | 43-21 | OGAWA Ami |
| TATEISHI Katsuhiro | won against | IWASAKI Masaaki |
| IMAMURA Hiroshi | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 43-21 | OKABE Michiaki |
| IWASAKI Masaaki | 43-21 | HASEGAWA Toshi |
| IWASAKI Masaaki | 35-29 | SANO Hirotaka |
| IWASAKI Masaaki | 64-00 | OKABE Michiaki |
| IWASAKI Masaaki | 51-13 | NAMIKI Kazunari |
| IWASAKI Masaaki | 43-21 | ENOMOTO Hiroyuki |
| TOMOTA Yusuke | 41-23 | IWASAKI Masaaki |
2009-12-20: 70_Hamamatsu_meeting(Japan)
2009-11-29: year_forgetting_conf_2009(Japan)
2009-09-06: 4_Ouza_sen(Japan)
2009-08-16: 69_Hamamatsu_meeting(Japan)
2009-07-19: 37_Japan_Champ(Japan)
2009-06-14: 37_Japan_Champ_Tokai_prelim_Women(Japan)
2009-06-07: 37_Japanese_Champ_Tokai_prelim(Japan)
2009-04-12: Shizuoka Championship 2009(Japan)
2009-03-29: 30_Meijin(Japan)
2009-03-28: 30_Meijin_prelim(Japan)
2009-03-08: 68_Hamamatsu_Open_A(Japan)
2009-03-01: 4_Gifu_Open(Japan)
2009-02-08: 30_Shizuoka_Open(Japan)
2009-01-18: 2009_NewYear_Conference(Japan)
2009-01-04: 2009_Hamamatsu_Open(Japan)
| NAGAO Hiroto | 39-25 | IWASAKI Masaaki |
| IWASAKI Masaaki | 54-10 | ENOMOTO Hiroyuki |
| TANAKA Atsushi | 48-16 | IWASAKI Masaaki |
| IWASAKI Masaaki | 56-08 | TATEISHI Katsuhiro |
| IWASAKI Masaaki | 64-00 | NAGAYA Toshiko |
| IWASAKI Masaaki | 58-06 | KANAZAWA Miyuki |
| IWASAKI Masaaki | 48-16 | MUKAI Daisuke |
| ARAKI Yasuyuki | 49-15 | IWASAKI Masaaki |
| IWASAKI Masaaki | 56-08 | IWAMOTO Yoshimi |
| IWASAKI Masaaki | 33-31 | ENOMOTO Hiroyuki |
| MIYAZAKI Yuji | 39-25 | IWASAKI Masaaki |
| NAKAMURA Yuya | 42-22 | IWASAKI Masaaki |
| IIJIMA Takamune | 45-19 | IWASAKI Masaaki |
| TAKEISHI Takuya | 34-30 | IWASAKI Masaaki |
| IWASAKI Masaaki | 47-17 | NAGAYA Toshiko |
| IWASAKI Masaaki | 39-25 | YAMANAKA Mami |
| TAKIGAWA Mitsuaki | 49-15 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | DATE Yuji |
| FUJITA Takeshi | 36-28 | IWASAKI Masaaki |
| IWASAKI Masaaki | 47-17 | YAMADA Takeo |
| SUZUKI Takahiro | 38-26 | IWASAKI Masaaki |
| IIJIMA Takamune | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | FURUMOTO Yuki |
| KOMAGATA Masayuki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | OGAWA Daisuke |
| TAKANASHI Yusuke | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | KAMEMOTO Osamu |
| OGURI Kenji | 37-27 | IWASAKI Masaaki |
| SANO Hirotaka | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | NAGAO Hiroto |
| IWASAKI Masaaki | 39-25 | MUKAI Daisuke |
| ENOMOTO Hiroyuki | 42-22 | IWASAKI Masaaki |
| IZUMI Shinichi | 33-31 | IWASAKI Masaaki |
| TOMOTA Yusuke | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 43-21 | SUZUKI Takahiro |
| IWASAKI Masaaki | won against | SUGIYAMA Mitsuaki |
| IWASAKI Masaaki | 38-26 | TERADA Junya |
| IWASAKI Masaaki | 37-27 | TOMOTA Yusuke |
| IWASAKI Masaaki | 43-21 | YOSHIKAWA Chiaki |
| SANO Hirotaka | 39-25 | IWASAKI Masaaki |
| SUGIYAMA Mitsuaki | 60-04 | IWASAKI Masaaki |
| IWASAKI Masaaki | 42-22 | SATO Endo |
| IWASAKI Masaaki | 44-20 | SATO Masuo |
| IWASAKI Masaaki | 36-28 | ENOMOTO Hiroyuki |
| IWASAKI Masaaki | 48-16 | KANAZAWA Miyuki |
| FUJITA Takeshi | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 54-10 | NAGAYA Toshiko |
| NAGASAKI Hidekazu | 33-31 | IWASAKI Masaaki |
| ASAHINA Satoshi | 33-31 | IWASAKI Masaaki |
| HAMADA Naoki | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | KOZUKA Katsuhiko |
| KIBA Kenta | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | OGAWA Daisuke |
| IWASAKI Masaaki | 33-31 | UNO Toshihiro |
| IWASAKI Masaaki | 33-31 | KOBAYASHI Syunjiro |
| IWASAKI Masaaki | 33-31 | NAGAMATSU Ryota |
| OZAWA Kou | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | GOTO Masahiro |
| IWASAKI Masaaki | 35-29 | TOKUSHIMA Akira |
| SUZUKI Takahiro | 34-30 | IWASAKI Masaaki |
| YUSAKI Akihiro | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | TANAKA Atsushi |
| NAGAO Hiroto | 41-23 | IWASAKI Masaaki |
| IWASAKI Masaaki | 61-03 | INAGAKI Shinobu |
| NAGAO Hiroto | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 37-27 | TSUCHIDA Daisuke |
| OKAMOTO Harumi | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 51-13 | YOSHIYUKI Suganuma |
| ESAKI Yuta | 57-07 | IWASAKI Masaaki |
| MATSUMOTO Hiroyuki | 44-20 | IWASAKI Masaaki |
| IWASAKI Masaaki | 42-22 | KANAZAWA Miyuki |
| ARAKI Yasuyuki | 54-10 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | NAMIKI Kazunari |
| IWASAKI Masaaki | 34-30 | TAKIGAWA Mitsuaki |
| SUGIYAMA Mitsuaki | 46-18 | IWASAKI Masaaki |
| IWASAKI Masaaki | 45-19 | TOMOTA Yusuke |
| IWASAKI Masaaki | 51-13 | OKUDA Tsuyoshi |
| IWASAKI Masaaki | 50-14 | TAKIGAWA Mitsuaki |
| IWASAKI Masaaki | 34-30 | TANAKA Atsushi |
| ARAKI Yasuyuki | 46-18 | IWASAKI Masaaki |
| NAGAO Hiroto | 50-14 | IWASAKI Masaaki |
| IWASAKI Masaaki | 53-11 | YUKA Takaaki |
| IWASAKI Masaaki | 49-15 | TATEISHI Katsuhiro |
| IWASAKI Masaaki | 60-04 | SATO Endo |
| IWASAKI Masaaki | 42-22 | FUJITA Koichi |
| IWASAKI Masaaki | 52-12 | TAKIGAWA Mitsuaki |
| IZUMI Shinichi | 35-29 | IWASAKI Masaaki |
2008-08-17: 66_Hamamatsu_meeting_A(Japan)
2008-08-03: 41_Nagoya_Open(Japan)
2008-06-08: 2008 Tokai preliminary(Japan)
2008-04-13: Shizuoka championship 2008(Japan)
2008-03-30: 65th Hamamatsu meeting(Japan)
2008-02-24: 29th Shizuoka expert game(Japan)
2008-02-03: New Year othello conference(Japan)
| IWASAKI Masaaki | 46-18 | KURODA Takuji |
| HAGA Kazutoshi | 42-22 | IWASAKI Masaaki |
| IWASAKI Masaaki | 39-25 | YUKA Takaaki |
| IWASAKI Masaaki | 42-22 | TANAKA Atsushi |
| IWASAKI Masaaki | 43-21 | FUJITA Takeshi |
| IWASAKI Masaaki | 38-26 | YOSHIYUKI Suganuma |
| TSUJI Shinji | 43-21 | IWASAKI Masaaki |
| TANAKA Atsushi | 50-14 | IWASAKI Masaaki |
| IWASAKI Masaaki | 45-19 | GOTO Hiroto |
| IWASAKI Masaaki | won against | IZUMI Shinichi |
| IWASAKI Masaaki | 43-21 | UNO Toshihiro |
| SANO Hirotaka | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | HASEGAWA Toshi |
| SUZUKI Toyoharu | lost to | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | MUKAI Daisuke |
| FUJITA Takeshi | won against | IWASAKI Masaaki |
| SUZUKI Takahiro | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | SUGIYAMA Mitsuaki |
| IWASAKI Masaaki | won against | SUZUKI Toyoharu |
| IWASAKI Masaaki | lost to | TAKIGAWA Mitsuaki |
| IWASAKI Masaaki | won against | OGURI Kenji |
| FUJITA Takeshi | lost to | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | OOBA Takayuki |
| IWASAKI Masaaki | won against | FUJITA Takeshi |
| NAGAO Hiroto | lost to | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | TOKUSHIMA Akira |
| IWASAKI Masaaki | lost to | OGURI Kenji |
| IWASAKI Masaaki | won against | NAGAYA Toshiko |
| ARAKI Yasuyuki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | KANAZAWA Miyuki |
| IWASAKI Masaaki | won against | OGURI Kenji |
| IWASAKI Masaaki | won against | TANAKA Atsushi |
| IZUMI Shinichi | won against | IWASAKI Masaaki |
| SANO Hirotaka | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | HASEGAWA Toshi |
| IWASAKI Masaaki | won against | NAMIKI Kazunari |
| IWASAKI Masaaki | won against | TANAKA Atsushi |
| ARAKI Yasuyuki | won against | IWASAKI Masaaki |
2007-12-16: Year End Conference(Japan)
2007-06-10: Tokai 35th Japanese Championship Preliminary(Japan)
2007-04-15: Shizuoka Championship 2007(Japan)
| IWASAKI Masaaki | won against | SUGIYAMA Akemi |
| ASAHINA Satoshi | won against | IWASAKI Masaaki |
| OKUDA Tsuyoshi | won against | IWASAKI Masaaki |
| MASAMUNE Yuji | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | MASUDA Yuki |
| IWASAKI Masaaki | won against | KANAZAWA Miyuki |
| SANO Hirotaka | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | FUJITA Takeshi |
| IWASAKI Masaaki | won against | HASEGAWA Toshi |
| SAKAGUCHI Kazuhiro | won against | IWASAKI Masaaki |
| OZAKI Yoshito | lost to | IWASAKI Masaaki |
| TSUNODA Keita | won against | IWASAKI Masaaki |
| ARAKI Yasuyuki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | OGURI Kenji |
| DATE Yuji | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | YOSHINO Nobuko |
| IWASAKI Masaaki | won against | IWAMOTO Yoshimi |
2006-12-10: year_forgetting_conf_2006(Japan)
2006-04-16: Shizuoka Championship 2006(Japan)
2006-03-26: 27_Meijin(Japan)
2006-02-26: 24th Shizuoka Expert Game(Japan)
| TERADA Junya | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | HASEGAWA Toshi |
| IWASAKI Masaaki | won against | SHIHO Ikuko |
| NAGAYA Toshiko | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | OGURI Kenji |
| IWASAKI Masaaki | won against | HASEGAWA Toshi |
| SUGIYAMA Akemi | won against | IWASAKI Masaaki |
| NAKAYAMA Takahiro | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | SATO Masuo |
| IWASAKI Masaaki | won against | YOSHINO Nobuko |
| IWASAKI Masaaki | 64-00 | OBAMA Satomi |
| OKAMOTO Junya | 64-00 | IWASAKI Masaaki |
| NAGASAKI Hidekazu | 64-00 | IWASAKI Masaaki |
| IWASAKI Masaaki | 64-00 | SHUICHI Tsuda |
| KAWARADA Yuichi | 64-00 | IWASAKI Masaaki |
| NAKANO Takao | 64-00 | IWASAKI Masaaki |
| OKI Shinsuke | 64-00 | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | OZAKI Yoshito |
| SUZUKI Takahiro | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | ARAKI Yasuyuki |
| FUJITA Takeshi | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | KOYAMA Yasuyuki |
| IWASAKI Masaaki | won against | NAGAI Makoto |
2005-04-10: Shizuoka Championship 2005(Japan)
2005-03-20: 26_Meijin(Japan)
| IWASAKI Masaaki | won against | NAKAYAMA Takahiro |
| OGURI Kenji | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | SUGIYAMA Mitsuaki |
| IWASAKI Masaaki | won against | MURAMATSU Daishi |
| SUZUKI Takahiro | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | 43-21 | SAKAGUCHI Kazuhiro |
| TANAKA Keisuke | 37-27 | IWASAKI Masaaki |
| IWASAKI Masaaki | 35-29 | SHIMIZU Kouichi |
| KATORI Michihiro | 41-23 | IWASAKI Masaaki |
| SUKO Masayuki | 41-23 | IWASAKI Masaaki |
| IWASAKI Masaaki | 34-30 | HIRABAYASHI Mihoko |
| SANO Hirotaka | 64-00 | IWASAKI Masaaki |
2004-04-11: Shizuoka Championship 2004(Japan)
2004-03-27: 25_Meijin_open(Japan)
| IWASAKI Masaaki | won against | HASEGAWA Toshi |
| ARAKI Yasuyuki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | KOBAYASHI Tome |
| IWASAKI Masaaki | won against | OGURI Kenji |
| NAGAI Makoto | won against | IWASAKI Masaaki |
| YOSHIDA Kengo | 35-29 | IWASAKI Masaaki |
| IWASAKI Masaaki | 55-09 | NODA Bintatsu |
| SENTOKU Hidefumi | 45-19 | IWASAKI Masaaki |
| IWASAKI Masaaki | 52-12 | ITABASHI Kunihiro |
| IWASAKI Masaaki | 33-31 | YOSHIKAWA Chiaki |
| WAZUKI Hiroyuki | 40-24 | IWASAKI Masaaki |
| IWASAKI Masaaki | 36-28 | OKUDA Hiroyuki |
2003-12-21: Kekka Open(Japan)
2003-04-13: Shizuoka Championship 2003(Japan)
2003-03-09: 24th Shizuoka Expert Game(Japan)
| SUGIYAMA Mitsuaki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | KOBAYASHI Tamami |
| SATO Tomoyuki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | NAGAI Makoto |
| ARAKI Yasuyuki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | MURAMATSU Daishi |
| IWASAKI Masaaki | won against | IWAMOTO Yoshimi |
| SATO Keisuke | won against | IWASAKI Masaaki |
| NAGAI Makoto | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | KOBAYASHI Tome |
| OGURI Kenji | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | MURAOKA Toshio |
| IWASAKI Masaaki | won against | DATE Yuji |
| YOSHIKAWA Chiaki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | MURAOKA Toshio |
2001-05-01: Meijin(Japan)
| HOSHI Ryuichi | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | KOBAYASHI Manabu |
| IWASAKI Masaaki | 33-31 | KAGAWA Yoichi |
| ESAKA Akira | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | JIBIKI Soyo |
| IWASAKI Masaaki | 33-31 | FURUSAKI Yoko |
| HOSHINO Yoshihiro | 33-31 | IWASAKI Masaaki |
2000-04-01: Meijin(Japan)
| MIYAZAKI Jun | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | OTSU Kanako |
| NAGAO Hiroto | 33-31 | IWASAKI Masaaki |
| HORIUCHI Keiko | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | TAKEMORI Satoru |
| KITAJIMA Masato | 33-31 | IWASAKI Masaaki |
| IWASAKI Masaaki | 33-31 | SATO Tomoyuki |
1997-05-03: 9th Kyoto Open(Japan)
| IWASAKI Masaaki | won against | OKUDA Masashi |
| UNO Toshihiro | won against | IWASAKI Masaaki |
| KOBAYASHI Atsushi | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | UENO Kohei |
| IWASAKI Masaaki | won against | MATSUI Takashi |
| NODA Bintatsu | won against | IWASAKI Masaaki |
1995-07-30: 23rd All Japan(Japan)
| TEZUKA Hirohisa | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | OGURA Katsutoshi |
| IWASAKI Masaaki | won against | NAKANO Maseru |
1994-07-31: 22nd All Japan(Japan)
| TAKIZAWA Masaki | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | NAKAZAWA Hirofumi |
| IWASAKI Masaaki | won against | OKABAYASHI Noguchi |
1993-08-23: 21st All Japan(Japan)
| GOTO Akihiko | won against | IWASAKI Masaaki |
| OKABAYASHI Noguchi | won against | IWASAKI Masaaki |
| MINE Tatsuya | won against | IWASAKI Masaaki |
1992-08-08: 20th All Japan(Japan)
| KAMEMOTO Osamu | won against | IWASAKI Masaaki |
| GOTO Akihiko | won against | IWASAKI Masaaki |
| NOZAKI Jyunetsu | won against | IWASAKI Masaaki |
1991-08-04: 19th All Japan(Japan)
| NOMURA Hisaichi | won against | IWASAKI Masaaki |
| MATSUZAKI Kazuhiko | won against | IWASAKI Masaaki |
| IWASAKI Masaaki | won against | ASAI Yuji |