第13回最強者決定戦 (だい13かいさいきょうしゃけっていせん) は、1973年度の最強者決定戦である。順位戦のB級2組以上の棋士に出場権が与えられた。C級1組以下の棋士は第17回古豪新鋭戦に出場した。
優勝者は中原誠名人、準優勝者は大山康晴永世王将と記念対局を行った。決勝三番勝負は、原田泰夫八段が花村元司八段を下した[3]。
対局者 | 第1局 | 第2局 | |
1973年 11月8日 | 1973年 11月14日 |
原田泰夫八段 | ○ | ○ | 優勝 |
花村元司八段 | ● | ● | |
| 2回戦 | | 3回戦 | | 4回戦 | | 準々決勝 | | 準決勝 | | | | | | | | | | | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | 二上 | | ● | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | 二上 | | - | | | | | | | | | | | | | | | | 二上達也八段 | | - | | | | | | | | | | | | | | | | | | | | | | | | | | 長谷部 | | ● | | | | | | | | 長谷部久雄七段 | | ○ | | | | | | | | | | | | | | | | | | 長谷部 | | ○ | | | | | | | | | | | | | | | | 勝浦修六段 | | ● | | | | | | | | | | | | | | | | | | | | 長谷部 | | ○ | | | | | | | | | | | A/ 松田茂行八段 | | ○ | | | | | | | | | | | | | | | | | 松田 | | ● | | | | | | | | | | | | | | | 西村一義七段 | | ● | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 丸田祐三八段 | ● | | | | 松下力八段 | | ○ | | | | | | | | | | | | | | | | | | | 松下 | | ● | | | | | | | | | | | | | | | | 関根茂八段 | | ● | | | | | | | | | | | | | | | | | | | | 富沢 | | ● | | | | | | | | | | | 富沢幹雄七段 | | ○ | | | | | | | | | | | | | | | | 富沢 | | ○ | | | | | | | | | | | | | | 芹沢博文八段 | | ● | | | | | | | | | | | | | | | | | | | | | | | | 丸田 | | ○ | | | | | | 丸田祐三八段 | | - | | | | | | | | | | | | | | | | | 丸田 | | - | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | 丸田 | | ○ | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | 原田 | | ○ | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | 原田 | | - | | | | | | | | | | | | | | | 原田泰夫八段 | | - | | | | | | | | | | | | | | | | | | | | | | | | | 原田 | | ○ | | | | | | | B/ 森雞二六段 | | ● | | | | | | | | | | | | | | | | | 五十嵐 | | ● | | | | | | | | | | | | | | | C/ 五十嵐豊一八段 | | ○ | | | | | | | | | | | | | | | | | | | 加藤一 | | ● | | | | | | | | | | 加藤一二三八段 | | - | | | | | | | | | | | | | | | | 加藤一 | | ○ | | | | | | | | | | | 決勝進出 | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | | | | | | | 原田泰夫八段 | ○ | | | 加藤博二八段 | | ○ | | | | | | | | | | | | | | | | | | | 加藤博 | | ● | | | | | | | | | | | | | | | | | 佐伯昌優六段 | | ● | | | | | | | | | | | | | | | | | | | | | 桜井 | | ● | | | | | | | | | | | | 北村昌男七段 | | ● | | | | | | | | | | | | | | | | | 桜井 | | ○ | | | | | | | | | | | | | | | 桜井昇五段 | | ○ | | | | | | | | | | | | | | | | | | | | | | | | | 大内 | | ● | | | | | | | 大内延介八段 | | - | | | | | | | | | | | | | | | | | | 大内 | | - | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | 大内 | | ○ | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| 2回戦 | | 3回戦 | | 4回戦 | | 準々決勝 | | 準決勝 | | | | | | | | | | | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | 佐藤 | | ● | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | 佐藤 | | - | | | | | | | | | | | | | | | | 佐藤大五郎八段 | | - | | | | | | | | | | | | | | | | | | | | | | | | | | 桐山 | | ● | | | | | | | | 高島弘光七段 | | ● | | | | | | | | | | | | | | | | | | 桐山 | | ○ | | | | | | | | | | | | | | | | 桐山清澄六段 | | ○ | | | | | | | | | | | | | | | | | | | | 桐山 | | ○ | | | | | | | | | | | 熊谷達人八段 | | ● | | | | | | | | | | | | | | | | | 田中 | | ● | | | | | | | | | | | 決勝進出 | | | | 田中正之五段 | | ○ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 花村元司八段 | ○ | | | | 塚田正夫永世九段 | | ○ | | | | | | | | | | | | | | | | | | | 塚田 | | ● | | | | | | | | | | | | | | | | D/ 小堀清一八段 | | ● | | | | | | | | | | | | | | | | | | | | 花村 | | ○ | | | | | | | | | | | 花村元司八段 | | ○ | | | | | | | | | | | | | | | | 花村 | | ○ | | | | | | | | | | | | | | 清野静男七段 | | ● | | | | | | | | | | | | | | | | | | | | | | | | 花村 | | ○ | | | | | | 米長邦雄八段 | | - | | | | | | | | | | | | | | | | | 米長 | | - | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | 米長 | | ● | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | 内藤 | | ● | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | 内藤 | | - | | | | | | | | | | | | | | | 内藤國雄王位 | | - | | | | | | | | | | | | | | | | | | | | | | | | | 大野 | | ○ | | | | | | | 本間爽悦七段 | | ○ | | | | | | | | | | | | | | | | | 本間 | | ● | | | | | | | | | | | | | | | 板谷進七段 | | ● | | | | | | | | | | | | | | | | | | | 大野 | | ○ | | | | | | | | | | 松浦卓造八段 | | ● | | | | | | | | | | | | | | | | 大野 | | ○ | | | | | | | | | | | | | | 大野源一八段 | | ○ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 大野源一八段 | ● | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | 灘 | | ○ | | | | | | | | | | | | | | | | | 灘蓮照八段 | | - | | | | | | | | | | | | | | | | | | | | | 灘 | | ● | | | | | | | | | | | | E/ 石田和雄六段 | | ● | | | | | | | | | | | | | | | | | 木村 | | ● | | | | | | | | | | | | | | | F/ 木村義徳七段 | | ○ | | | | | | | | | | | | | | | | | | | | | | | | | 有吉 | | ● | | | | | | | 有吉道夫八段 | | - | | | | | | | | | | | | | | | | | | 有吉 | | - | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | 有吉 | | ○ | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | (Bye) | | - | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
第17回古豪新鋭戦 (だい17かいこごうしんえいせん) は、1973年度の古豪新鋭戦である。順位戦のC級1組以下の棋士および奨励会三段に出場権が与えられた。決勝戦は、森安秀光五段が伊藤果三段を下した[3]。