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Yoonyoung Kim 8P and women’s team hold 2-0 lead over the veterans at 15th Korean Gigi Auction Cup

Sunday August 1, 2021

Yoonyoung Kim 8P won her two opening games against Sujang Kim 7P and Yoo Changhyuk 9P on July 26 and 27 at the 15th Gigi Auction Cup veteran-women Go Challenge in Seoul, Korea. Each team, a women’s team and a veterans team – with players all 45 years old or above – has 12 players and sends out one competitor at a time. All games are live on BadukTV and can be found on their YouTube channel. On Monday morning, August 2nd, Kim 8P will take on Lee SungJae 9P hoping for a three-win streak, which will mean an additional prize. The winning team prize is $100,000 (120 million won). Since 2007, the women’s team has won eight times (the 1st, 4th, 6th, 8th, 9th, 11th, 12th, 14th) and the veterans team has won six times.

-photos from BadukTV
-report by Capital Go Club

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Categories: Korea,Main Page,Other
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50 Years aGO – July 1971

Saturday July 31, 2021

by Keith L. Arnold, hka, with Patrick Bannister

On July 11, the 4th Pro-Amateur Go Congress took place, between ten pros and ten top amateurs. Our source is silent on the handicap, but the score was a tie, with each team winning 4 games and two games ending in jigo, There was quite a sensation when 13 year old M. Kanazawa defeated Hashimoto Utarō 9d.

The Meijin League entered its final phases. On July 8, Rin Kaihō’s perfect 5-0 start was ended by veteran Takagawa Kaku, keeping suspense alive as to the challenger for another round. But on July 22, Rin defeated Ōtake Hideo and secured the right to challenge Fujisawa Shūkō. (Game record: Rin-Takagawa.)

On July 26 (televised on August 1) Kojima Takaho 6d won the 3rd Shin’ei TV event by a half a point over Cho Hunhyun 5d. (Game record: Kojima-Cho.)

Two amateur players visited Japan to study go this month. The more famous, at the time, was Manfred Wimmer, amateur 5d and former European Champion. His plan was to stay for two years. With a plan to stay for two months, James Kerwin arrived to study as well. He is pictured on the left facing Takenaka 4d at the Nihon Ki’in.

Rin Kaihō wins the Meijin League
Rin Kaihō wins the Meijin League
Kojima Takaho and Cho Hunhyun in the final game of the 3rd Shin'ei Tournament
Kojima Takaho and Cho Hunhyun in the final game of the 3rd Shin’ei Tournament
James Kerwin at Nihon Ki'in
James Kerwin at Nihon Ki’in

Photos courtesy of Go Review.

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Amateur Pair Go Championship postponed due to COVID

Friday July 30, 2021

The 32nd International Amateur Pair Go Championship has been postponed to next year. It had been scheduled to be held on December 11 and 12 this year, but due to the fact that the COVID-19 situation in Japan is not improving, organizers decided that “it’s just too difficult to safely invite players from overseas.” The Championship is expected to be held in late November or December of 2022.

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Categories: Japan,Main Page,World
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Upcoming Go Events: Evanston

Monday July 26, 2021

July 31: Evanston, IL
Evanston Go Club Go Tournament
Mark Rubenstein mark@evanstongoclub.org 847-869-6020

Get the latest go events information.

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Categories: Calendar,Main Page
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Go Spotting: Go and Polyominoes

Sunday July 25, 2021

by Xinming Simon Guo

My former math instructor, professor George Litman from National Louis University, recently invited me to visit his personal library. There, I found a mathematics book he purchased in 1995: Polyominoes: Puzzles, Patterns, Problems, and Packings. In the preface, the author, Professor Solomon Golomb, mentioned that polyominoes were first observed in patterns formed by 5 connected stones/markers on a Go game board in 1907.

Coincidentally, I also discovered these patterns in 2011 on the Go board, but I didn’t know they were polyominoes. In a Go game forum, I posted a puzzle about the possible shapes formed by 8 connected stones, which proved to be too challenging at the time. So I changed the difficulty level to 6 stones (Hexomino), and found all 35 shapes.

The unexpected discovery about polyominoes has led to the formal integration of these shapes into my Go and Math curriculum. The photo below captures all the shapes of pentominoes (5-stone string):

Photo by Jane online summer camp student Jane, 2020

By the way, there are 363 shapes of octominoes (8-stone string), a number arrived at by adding an extra stone based on 7-stone strings, removing duplicates, and counting the distinct shapes. No formula has been found yet to calculate the number of shapes.

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