In the Winners Section the letter codes refer to the Losers Section stage in which the (losing) player enters. In the Losers Section the letter codes reference to the Winners Section (helpful to understand sudden appearances of new players in several rounds of this section).

The first eight players who lose two games drop out of the Challenger tournament. These players thus are the losers of the 1st and 2nd round in the losers section. The players who drop out like this can of course re-enter the next edition of the challenger tournament by normal means.

		Winners Section
		Round 1		Round 2		Round 3		Round 4		Winner	Challenger
		Hashimoto Shoji, 9 dan	[A]	Hashimoto Shoji	[I]	Hashimoto Shoji	[M]	Miyashita Shuyo	[O]	Sakata Eio	Sakata Eio (W+4.5)
		Otake Hideo, 7 dan
		Kada Katsuji, 8 dan	[B]	Kada Katsuji
		Rin Kaiho, 8 dan
		Miyashita Shuyo, 9 dan	[C]	Miyashita Shuyo	[J]	Miyashita Shuyo
		Fujisawa Hosai, 9 dan
		Sugiuchi Masao, 9 dan	[D]	Sugiuchi Masao
		Hashimoto Utaro, 9 dan
		Sato Sunao, 9 dan	[E]	Sato Sunao	[K]	Sakata Eio	[N]	Sakata Eio
		Hane Yasumasa, 6 dan
		Sakata Eio, 9 dan	[F]	Sakata Eio
		Tono Hiroaki, 7 dan
		Fujisawa Shuko, 9 dan	[G]	Fujisawa Shuko	[L]	Handa Dogen
		Yamabe Toshiro, 9 dan
		Handa Dogen, 9 dan	[H]	Handa Dogen
		Sometani Kazuo, 7 dan
Losers Section
Round 1		Round 2		Round 3		Round 4		Round 5		Winner
Otake Hideo	[A]	Rin Kaiho		Rin Kaiho		Rin Kaiho		Miyashita Shuyo		Handa Dogen
Rin Kaiho	[B]
Fujisawa Hosai	[C]	Hashimoto Utaro
Hashimoto Utaro	[D]
Hane Yasumasa	[E]	Tono Hiroaki		Tono Hiroaki
Tono Hiroaki	[F]
Yamabe Toshiro	[G]	Yamabe Toshiro
Sometani Kazuo	[H]
						Miyashita Shuyo	[O]
		Kada Katsuji	[I]	Kada Katsuji		Kada Katsuji		Handa Dogen
		Sugiuchi Masao	[J]
		Sato Sunao	[K]	Fujisawa Shuko
		Fujisawa Shuko	[L]
				Hashimoto Shoji	[M]	Handa Dogen
				Handa Dogen	[N]

event	round	black	rank	cb	white	rank	cw	ha	km	date	place	result	size	#mn	game
Judan tournament	winners	Sakata Eio	9p, Honinbo	8	Handa Dogen	9p	6		5.5	1966-10-05	JP	4.5	19	264
Judan tournament	loosers	Kada Katsuji	8p	7	Handa Dogen	9p	5		5.5	1966-09-15	JP	6.5	19	246
Judan tournament	loosers	Kada Katsuji	8p	15	Fujisawa Shuko	9p	20		5.5	1966-08-04	JP	1.5	19	289
Judan tournament	loosers	Sato Sunao	9p	5	Fujisawa Shuko	9p	5		5.5	1966-07-21	JP	2.5	19	245
Judan tournament	loosers	Kada Katsuji	8p	14	Sugiuchi Masao	9p	11		5.5	1966-06-23	JP	R	19	245
Judan tournament	winners	Sakata Eio	9p, Honinbo	2	Miyashita Shuyo	9p	0		5.5	1966-06-16	JP	R	19	163
Judan tournament	loosers	Hashimoto Utaro	9p	15	Rin Kaiho	8p, Meijin	2		5.5	1966-06-02	JP	3.5	19	256
Judan tournament	winners	Hashimoto Shoji	9p	4	Miyashita Shuyo	9p	3		5.5	1966-05-12	JP	2.5	19	265
Judan tournament	loosers	Otake Hideo	7p	2	Rin Kaiho	8p, Meijin	9		5.5	1966-05-05	JP	R	19	164
Judan tournament	winners	Sakata Eio	9p, Honinbo	1	Handa Dogen	9p	0		5.5	1966-04-20	JP	R	19	153
Judan tournament	winners	Kada Katsuji	8p	7	Hashimoto Shoji	9p	7		5.5	1966-04-14	JP	R	19	216
Judan tournament	loosers	Tono Hiroaki	8p	1	Yamabe Toshiro	9p	3		5.5	1966-04-14	JP	R	19	129
Judan tournament	loosers	Hashimoto Utaro	9p	4	Fujisawa Hosai	9p	4		5.5	1966-04-07	JP	R	19	233
Judan tournament	winners	Handa Dogen	9p	4	Fujisawa Shuko	9p	3		5.5	1966-03-18	JP	R	19	145
Judan tournament	winners	Hashimoto Shoji	9p	28	Otake Hideo	7p	20		5.5	1966-03-03	JP	1.5	19	295
Judan tournament	winners	Kada Katsuji	8p	3	Rin Kaiho	8p, Meijin	7		5.5	1966-02-17	JP	R	19	179
Judan tournament	loosers	Hane Yasumasa	5p	14	Tono Hiroaki	7p	11		5.5	1966-02-17	JP	R	19	244
Judan tournament	winners	Sakata Eio	9p, Honinbo	4	Sato Sunao	9p	3		5.5	1966-02-03	JP	R	19	207
Judan tournament	winners	Tono Hiroaki	7p	14	Sakata Eio	9p, Honinbo	15		5.5	1966-01-20	JP	3.5	19	252
Judan tournament	winners	Yamabe Toshiro	9p	3	Fujisawa Shuko	9p	4		5.5	1966-01-16	JP	R	19	172
Judan tournament	winners	Hane Yasumasa	5p	4	Sato Sunao	9p	1		5.5	1965-12-24	JP	R	19	144
Judan tournament	winners	Takagawa Kaku	9p, Honorary Honinbo	2	Sakata Eio	9p, Honinbo	3		5.5	1965-10-14	JP	5.5	19	237
Judan tournament	winners	Sakata Eio	9p, Honinbo	4	Hashimoto Utaro	9p	1		5.5	1965-10-06	JP	R	19	155
Judan tournament	winners	Takagawa Kaku	9p, Honorary Honinbo	14	Sato Sunao	9p	20		5.5	1965-08-12	JP	6.5	19	273
Judan tournament	winners	Fujisawa Shuko	9p	1	Kada Katsuji	8p	1		5.5	1965-06-24	JP	R	19	149
Judan tournament	winners	Sugiuchi Masao	9p	9	Yamabe Toshiro	9p	4		5.5	1965-06-16	JP	R	19	208
Judan tournament	winners	Hashimoto Shoji	9p	1	Yamabe Toshiro	9p	6		5.5	1965-02-11	JP	R	19	137