Koizumi Shigeo

Koizumi Shigeo (小泉重郎) has a rating of 0.

Koizumi Shigeo小泉重郎

Rating0

Rank—

1-year change—

Peak rating—

Last 10-1

1949 record: 0-1
Record since 1927: 0-1
Win rate: .000

The rating is calculated from published game results. It does not include any adjustment for playing Black.

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Recent games

Up to 20 games, newest first. “Change” is the rating movement.
Date	Opponent and tournament	Result	Change
January 1, 1949	Kajiwara TakeoHoninbo 1st Preliminary Round 3　as White	Loss	—

Head-to-head

Up to 10 opponents, most-played first. Records are from Koizumi Shigeo's point of view; jigo and no-result games are not counted as wins or losses. Only games from 1927 onward are included.
Opponent	Total	As Black	As White
Kajiwara Takeo	0-1.000	0-0	0-1

Record by year

Counted by calendar year, January to December (default wins and losses are included; jigo and no-result games are not). Only games from 1927 onward are counted, so these totals do not match the career records published by the two Ki-in.

Year	Record	Win rate
1949	0-1	.000
Total	0-1	.000

Calculated from games played between 1927 and 2026 (as of September 17, 2026).