Professional shogi player
A professional shogi player (将棋棋士 shōgi kishi or プロ棋士 puro kishi "professional player") is a shogi player who is usually a member of a professional guild of shogi players.
There are two categories of professional players: regular professional and female professional. All regular professional shogi players are members of the Japan Shogi Association (JSA). However, only regular professional players, who are all male, are considered to be full-fledged members. Female professional players belong to groups distinct from regular professional players. In Japanese, the term 棋士 kishi only refers to regular professional players to the exclusion of the female professionals, who are termed 女流棋士 joryū kishi.
- 1 History
- 2 Ranking
- 3 Professional players
- 4 Female professionals
- 5 Tournaments
- 6 Computer shogi
- 7 List of professional players
- 8 See also
- 9 Notes
- 10 References
- 11 External links
During the Edo period (1603-1868), shogi followed an iemoto system centered around three families (schools): the Ōhashi (main), the Ōhashi (branch) and the Itō. Titles such as Meijin were hereditary and could only be held by members of these three families. These three schools were supported by the Tokugawa shogunate and thus controlled the professional shogi world up until 1868 when the Meiji Restoration took place. By the time Sōin Itō, the eighth and last head of the Itō school and the 11th Hereditary Meijin, died in 1893, the influence of the families had decreased to such an extent that they had no real power at all.
All shogi players are ranked by a dan system. In the current system, apprentice players become professional when they achieve the rank of 4-dan. Apprentice players aspiring to become professionals are ranked from 6-kyū to 3-dan. Amateur and professional dan ranks are not equivalent with amateur 3- to 5-dan being roughly equivalent to apprentice professional 6-kyū and amateur 2- to 4-dan being roughly equivalent to female professional 2-kyū.
Unlike western chess, shogi players do not have official Elo ratings although unofficial Elo scores may be calculated by shogi fans.[a] Unlike Elo scores which may increase or decrease, players who achieve a certain dan are never demoted to a lower dan. Thus, the dan system may be thought as a performance milestone indicator or somewhat like the peak Elo rating that is used in western chess.
Apart from the dan system, players are also ranked according to their results in the Meijin ranking tournament. Their performance in the ranking tournament may also affect their ranking in the dan system. Unlike the dan system, a player may be demoted to a lower Meijin ranking tournament class (as well as promoted).
Regular professionals (kishi) are ranked from 4- to 9-dan. All new professionals start at 4-dan and are subsequently promoted based upon criteria established by the JSA. A similar system exists for female professionals who have their own separate ranking system from 2-kyū to 6-dan. Satisfying one of the required criteria is sufficient for promotion. The JSA board of directors may also promote active professionals for exemplary results, etc. when deemed appropriate, and upon their official retirement in consideration of the number of years active, etc.
|3-kyū||Provisional female professional status based upon results achieved in training group play. A player who has been promoted to Group C1 and has played at least 48 official games can apply for provisional professional status and the rank of 3-kyū; however, they must achieve one of the promotion criteria for 2-kyū or above within a two-year period or their provisional status will be revoked. A player who loses her provisional status can return to Group C2. Female amateurs under the age of 27 who reach the quarterfinals of an official women's tournament may also apply for provisional professional status; however, they must do so within in two weeks of the result or lose the right to do so. They can, however, repeat the process up to three times. Players still considered to be minors need to have the consent of their parent or guardian to apply. Players who belong to the JSA are required to have a professional player as their sponsor; those without sponsors will be granted a grace period of six months before losing the right to apply for provisional status.|
|6-dan (and above)||Reserved for female professionals who have achieved exemplary results over their career as determined by the JSA board of directors|
JSA professional shogi players (正規棋士 seiki kishi or 棋士 kishi for short) are ranked from four to nine dan. Players receive a monthly salary according to their rank as well as game fees based upon performance, which historically have mostly come from media conglomerates in exchange for exclusive publishing rights. In addition, popular players may also earn income from teaching, publishing, media appearances, etc. As of December 2017[update] there are 162 active professionals.
Training group system
The JSA offers official "training" or "study" groups (研修会 kenshūkai) in Tokyo, Osaka, Nagoya and Fukuoka where promising young amateur players can play instructional games against shogi professionals as well as official ranking games against other players of similar strength. These groups are open to all amateur-dan-ranked male and female players aged 20 years (25 years for females wanting to become a female professional. In this case a master is required) and under who can pass the entrance examination and pay the required tuition and other fees. Players are divided into seven groups from S to F according to playing strength: S is the top group, while the strength of a typical Group F player is generally considered to be amateur 2-dan. Each group is further divided into two sub-groups, 1 and 2, with promotion and demotion from one group or sub-group to another being determined by actual game results. Players who perform at high levels in the top groups can qualify for entry into the Apprentice School (for Group S or A2, depending upon age) or provisional female professional status (for Group C1) if they satisfy certain other conditions.
Strong amateurs wishing to become professional must be accepted into the JSA's Apprentice School (新進棋士奨励会 shinshin kishi shōreikai). Apprentice professionals are initially ranked from 6-kyū to 3-dan based upon their results on the apprentice school entry exam or performance in certain amateur tournaments. Apprentices are guided through the system by their master (師匠 shishō)—a currently active professional who acts as their sponsor and teacher—and are promoted or demoted in rank based upon performance.
Players who successfully move up the ranks to 3-dan participate in the 3-dan League (三段リーグ san-dan riigu). This league is held twice yearly and the two top finishers of each league are promoted to 4-dan, thus gaining professional status. The 3-dan League was established in 1987 with an initial limit of four players qualifying for 4-dan promotion in response to a concern that the average of five to six new professionals every year was diluting the professional pool.
Amateurs of either gender can apply for entry into the apprentice school, but they must be promoted to 1-dan by age 21 and 4-dan by age 26 and those who are not must leave the school. Those newly promoted to 3-dan are given at least five chances to obtain promotion to professional status in the 3-dan League, with anyone under age 29 who can maintain a win rate over 50% in 3-dan League being allowed to stay. Anyone over age 21 who drops from 1-dan to 1-kyū must achieve promotion to 1-dan again in six months or leave the school.
Professional admission test
There is an alternative way for amateurs to obtain professional status called the Professional Admission Test (プロ編入試験 puro henyū shiken) which was established by the JSA in 2006 in response to a former apprentice school 3-dan's successful attempt to become a professional. Shōji Segawa was unable to gain promotion to 4-dan professional before turning 26 in 1996, and thus was required to withdraw from the JSA's apprentice school. Segawa continued to play shogi as an amateur and won a number of national amateur tournaments which allowed him to qualify for tournaments involving professionals. Segawa's record of 17 wins and 5 losses against professionals in these tournaments led him to request that the JSA grant him another opportunity to become a professional. In response, the JSA arranged six games for Segawa to play against a variety of opponents and stated that he would be granted 4-dan professional status if he won three games. Segawa's opponents included four professional players, one female professional player, and one apprentice school 3-dan. The games were held from July to November 2005, and Segawa achieved his third win by winning game 5 on November 6, 2005 and was granted professional status by the JSA on the same day. In 2014, the JSA announced the qualifications for those wishing to apply for the Professional Admission Test. In July 2014, the JSA announced that it had accepted the application submitted by amateur Kenji Imaizumi, a 41-year-old former apprentice school 3-dan. Imaizumi became the first amateur to successfully obtain professional status under the new system in December 2014.
This section needs expansion. You can help by adding to it. (December 2017)
Female professional players are in groups distinct from regular professional players. Currently, no female professional player has yet qualified to become a member of the same category as regular professionals although 20 female shogi apprentices have competed to become professional. Currently, there is one female apprentice player, Tomoka Nishiyama (西山朋佳), who is in the 3-Dan League.
There are two guilds of female professionals. Before the creation of the female guilds, women were historically not allowed to become professional players.
The JSA has a separate system for female professionals (女流棋士 joryū kishi) and ranks them from 3-kyū to 6-dan. Female professionals are ranked and promoted differently than professionals (kishi) by the JSA. As of December 2016[update], there are 52 active female professionals. Strong female professionals are able to participate in some tournaments with men, but most professional tournaments are restricted to (all male) professionals. However, there are also major title matches and other tournaments for women only. Many of the women's tournaments are also open to the public for amateur female players who are not members of the JSA or LPSA. Until the 1990s, the strongest female professionals were considered to be roughly equivalent to 1- or 2-dan apprentices in playing strength. Now, the strongest female professionals are close to professional level playing equivalent to 3-dan apprentices.
Strong female amateur players aged 25 or under who wish to become a female professional must be accepted into the JSA's Kenshūkai (研修会 "training group"). Female amateurs who are promoted to Class C1 are granted the rank of provisional female professional 3-kyū. Those achieving the provisional rank of 3-kyū have two years to gain promotion to the rank of 2-kyū and thus obtain regular female professional status.
Prior to 1984, female professionals were determined by their performance in national tournaments. From 1984 until March 2009, amateurs aspiring to become female professionals competed against each other in the Female Professional Apprentice League (女流育成会 joryū ikuseikai), a system similar to the 3-Dan League of the Professional Apprentice School. The winner of the league was promoted to female professional 2-kyū. In April 2009, the JSA disbanded this system and merged it into the "training group" system.
Akiko Takojima joined the JSA in 1974 becoming the first female professional. She was also the first female to join the Professional Apprentice School and reached 1-dan before withdrawing. She later left the JSA to join the LPSA.
This section needs expansion. You can help by adding to it. (March 2018)
Other female professional players are members of the Ladies Professional Shogi-players' Association of Japan (LPSA), which is a professional guild of female players separate from the JSA. The LPSA was formed in 2007 due to disagreements between female players and the JSA over money and governance.
Professional players compete in a number of title tournaments as well as non-title tournaments. The two most prestigious are the tournaments for the Meijin title and the Ryūō title.
There are currently eight major title tournaments. The oldest is the Meijin, which is historically connected to the hereditary title system established in the 17th century during the time of the Tokugawa shogunate and later became a tournament title in 1937. The newest title tournament is the Eiō, which became a title tournament as recently as 2017.
Below are the names of the title tournaments along with the current titleholders.
|Title name||Japanese name||Titleholder|
Most women's tournaments are open to both women's professional players as well as other women amateur players.
Below are the names of the title tournaments along with the current titleholders.
|Title name||Japanese name||Titleholder|
|Kurashiki Tōka Cup||倉敷藤花||Kana Satomi|
Human versus computer
In October 2005, professional players were instructed that they were banned from playing public games against computers without the permission of the JSA. The JSA said the reason for doing this was due to the increasing strength of shogi software programs and concerns that even a single professional player losing to a computer could give the public the impression that professionals "are weaker than the software". It was also believed that the JSA wanted to have more control over any future commercial opportunities associated with such games, and was asking "organizers pay a sponsorship fee of at least ¥100 million per game". Kunio Yonenaga, the JSA president who instituted the ban, later elaborated on the reasons for the ban in a 2011 interview by saying, "If a professional shogi player wins a match against a computer, it's no news. But when a pro loses, it turns into a big deal".
A number of official games between professionals and computers have taken place since the ban went into effect. In March 2007, reigning Ryūō titleholder Akira Watanabe defeated the program "Bonanza" in the first official game since the ban was instituted, but female professional Ichiyo Shimizu became the first professional, man or woman, to lose to a computer in an official game when she lost to "Akara 2010" in October 2010. In January 2012, the program "Bonkras" defeated then JSA president and retired former Meijin Yonenaga. Shin'ichi Satō became the first active male professional to lose to a computer when he lost to the program "Ponanza" in March 2013, and Hiroyuki Miura became the first active "Class A" professional to lose to a computer when he lost to the program "GPS Shogi" in April 2013. Miura was participating in a match between five active male professionals and five computer programs held in March and April 2013. The match was won by the computers with a score of three wins, one draw and one loss. A second team match was held in March and April 2014 with the computers winning four out of the five games played. A third team match was held in March and April 2015 with the professionals winning three games and losing two.
In June 2015, it was decided that the team match format was to be replaced by a two-game match (two days per game) between the winners of respective human and computer qualifying tournaments sponsored by the JSA and telecommunications company Dwango. Takayuki Yamasaki and the program "Ponanza" started the best-of-two game 1st Denō Match in April 2016, and Yamasaki lost the match 2–0.
On February 22, 2017, the JSA announced that the "Denou Sen" matches between computers and professional players sponsored by Dwango would end in 2017. According to the chairman of Dwango, "These serious battles between humans and software have completed their historic role". On April 1, 2017, Meijin Amahiko Satō became the first reigning major titleholder to lose an official game to a computer when he lost Game 1 of the 2nd Denō Match to the computer representative Ponanza.
Human versus human
In October 2016, the JSA announced new rules which require players to keep their smartphones or other electronic devices in their lockers during official match games. Players will also be banned from leaving the JSA buildings in Tokyo and Osaka during official games. The JSA said the new rules were needed to prevent "high-tech cheating" by players using shogi apps installed on the devices themselves or from using the devices remotely access off-site personal computers for assistance during games. The move was made in response to the increasing strength of computer software in recent years, including a number of results where computers have beaten professional players in official games. As computer shogi programs have gotten stronger, the number of players using them for match preparation and post-game analysis has increased, giving rise to concerns about the possibility of cheating during games. The new rules took effect in December 2016.
On February 10, 2017, the JSA announced that two professional players were the first to be fined for leaving the playing site during official games under the new rules. The two players were spotted by others leaving the playing site during their meal breaks for official games held on February 7 and February 8, 2016, respectively. The JSA fined each player 50% of the amount they were to receive as a game fee and strongly warned them to avoid making the same mistake again.
List of professional players
- For instance: http://kishi.a.la9.jp/ranking/2018.html or http://shogidata.info/list/rateranking.html
- New criterion announced by JSA on May 22, 2018. Effective as of June 1, 2018.
- A player who wins three major titles while ranked lower that 8-dan, however, cannot be directly promoted to 9-dan; they must first satisfy the criteria for promotion to 8-dan.
- Hosking, Tony (1997). The Art of Shogi. Stratford-upon-Avon, England: The Shogi Foundation. p. 4. ISBN 978-0953108909.
- Hosking 1997, p. 5.
- "Sōritsu - Enkaku" 創立・沿革 [Establishment/History] (in Japanese). Japan Shogi Association. Archived from the original on 2014-10-06. Retrieved 2015-05-24.
- Hodges, George, ed. (1983). "Nihon Shogi Renmei". Shogi (41): 20.
- "Shōreikai Gaiyō" 奨励会概要 [Outline of Apprentice School] (in Japanese). Japan Shogi Association. Archived from the original on 16 December 2008. Retrieved 21 September 2015.
- "Dan to Kyū" 段と級 [Dan and Kyū] (in Japanese). Japan Shogi Association. Retrieved March 20, 2018.
- "Shōdan Kitei" 昇段規定 [Promotion rules] (in Japanese). Japan Shogi Association. Retrieved February 25, 2018.
- "Shōdan Kitei Kaitei no Oshirase (Hachidan Shōdan no Kaitei)" 昇段規定改定のお知らせ (八段昇段の改定) [Revised promotion criteria announced (revision to 8-dan promotion criteria)] (in Japanese). Japan Shogi Association. May 22, 2018. Retrieved May 23, 2018.
- Satō, Tomoyasu (February 1, 2017). "Puro Kishi Shōdan ni wa Itsutsu no Hōhō ga Atta. Igai to Shirareteinai, Sono Shikumi to wa?" プロ棋士昇段には5つの方法があった. 意外と知られていない,その仕組みとは? [The five ways professionals are promoted. The process is unexpectedly not very well known.] (in Japanese). Japan Shogi Association. Archived from the original on April 10, 2017. Retrieved March 22, 2018.
- "Yamane Konomi Kenshūkaiin ga Joryūkishi Sankyū no Shikaku wo Kakutoku" 山根ことみ研修会員が女流棋士3級の資格を取得 [Training group member Kotomi Yamane obtains rank of female professional 3-kyū] (in Japanese). Japan Shogi Association. September 10, 2013. Retrieved March 23, 2018.
- "Joryū Kishi Karikaiin (Joryū Sankyū) Shikaku Fuyo Kitei" 女流棋士(女流3級) 資格付与規程 [Provisions for obtaining provisional female professional status (female professional 3-kyū)] (in Japanese). Japan Shogi Association. October 2, 2013. Retrieved March 23, 2018.
- Hosking 1997, p. 6.
- "Geneki Kishi Ichiran" 現役棋士一覧 [List of active professionals] (in Japanese). Japanese Shogi Association. Retrieved December 20, 2017.
- "Kenshūkai" 研修会 [Training groups system] (in Japanese). Japan Shogi Association. Retrieved December 20, 2017.
- "Shōreikaishiken Gaiyo" 奨励会試験概要 [Apprentice School Test Overview] (in Japanese). Japan Shogi Association. Archived from the original on December 16, 2008. Retrieved November 1, 2014.
- "'Yaru kara ni wa Kanarazu Yondan ni' Satomi Joryū Sankan Ichimon Ittō" ｢やるからには必ず四段に｣ 里見女流三冠一問一答 [Q & A with Satomi Women's 3 Crown, "I will definitely make 4 dan"]. Asahi Shimbun (in Japanese). Tokyo, Japan. December 23, 2013. Retrieved November 1, 2014.
- Hodges, George, ed. (1987). "Japanese shogi scene". Shogi (69): 2.
- Nakamura, Akemi (December 29, 2005). "Newest 'shogi' pro followed unlikely path". The Japan Times. Retrieved February 15, 2016.
- "Satomi Joryū Sankan, Shōreikai Sandan ni, Josei Hatsu no Kishi e Saishū Sekimon" 里見女流三冠、奨励会三段に 女性初の棋士へ最終関門 [Satomi Women's 3 Crown, Promoted to Apprentice Professional 3 Dan, Last Barrier Before Becoming First Woman "Regular" Shogi Professional]. Asashi Shimbun (in Japanese). Tokyo, Japan. December 23, 2013. Retrieved November 1, 2014.
- "Henyū Seido Tōshisho A" 編入制度答申書 A [Admission Test System Report A] (in Japanese). Japan Shogi Association. May 26, 2006. Archived from the original on January 14, 2007. Retrieved April 15, 2016.
- "Segawa Shōji-shi no Puro Iri ni Tsuite" 瀬川晶司氏のプロ入りについて [Regarding Shōji Segawa Becoming a Professional] (in Japanese). Japan Shogi Association. June 19, 2005. Archived from the original on June 19, 2005. Retrieved April 15, 2016.
- "Puro Henyūshiken ni tsuite no Oshirase" プロ編入試験についてのお知らせ [Announcement regarding the Professional Admission Test] (in Japanese). Japan Shogi Association. April 18, 2014. Retrieved April 15, 2016.
- "Amachua no Imaizumi Kenji-san, Puro Henyūshiken Jūken e" アマチュアの今泉健司さん,プロ編入試験受験へ (in Japanese). Japan Shogi Association. July 24, 2014. Retrieved April 15, 2016.
- Wada, Chitose (December 8, 2014). 今泉健司さん, プロ棋士に合格「可能性にふたをしないかぎり, 年齢は関係ない」 [Kenji Imaizumi becomes shogi professional: "Age is not a factor as long as the possibility to do so is not taken away"]. The Huffington Post Japan (in Japanese). Retrieved April 15, 2016.
- "Nishikawa Tomoka Shōreikain, Shōreikai Sandan ni" 西山朋佳奨励会員, 奨励会三段に [Apprentice professional Tomoka Nishikawa promoted to 3-dan] (in Japanese). Japan Shogi Association. December 7, 2015. Retrieved September 4, 2018.
- Yamamura, Hideki (February 18, 2018). "Satomi Kana, Josei Hatsu no Kishi Toonoku, Shoreikai Taikai Kimaru" 里見香奈, 女性初の棋士遠のく 奨励会退会決まる [Kana Satomi's bid to become first female "kishi" unsuccessful. End of apprenticeship determined]. Mainichi shimbun (in Japanese). Retrieved February 27, 2018.
- "Puro Kisen no Kitei ni Kansuru Goshitsumon: Naze, Dansei wa "Kishi" na noni, Josei wa "Joryū Kishi" to Naru no Desuka" プロ棋戦の規定に関するご質問: なぜ, 男性は "棋士" なのに, 女性は "女流棋士"となるのですか。 [Question about professional shogi rules: Why are men "kishi", but women "joryū kishi"] (in Japanese). Japan Shogi Association. Retrieved February 14, 2015.
- "Joryū Kishi Shōdan Kitei" 女流棋士昇段規定 [Female professional promotion requirements] (in Japanese). Japan Shogi Association. Archived from the original on October 14, 2012. Retrieved February 14, 2015.
- "Geneki Joryū Kishi Ichiran" 現役女流棋士一覧 [List of active female professionals] (in Japanese). Japanese Shogi Association. Retrieved December 12, 2016.
- "Kenshūkai no Goannai" 研修会のご案内 [Information about the Kenshūkai] (in Japanese). Japan Shogi Association. Archived from the original on February 8, 2015. Retrieved February 15, 2015.
- Osumi, Magdelena (June 29, 2015). "Polish woman becomes shogi queen in rare move for foreigner". The Japan Times. Retrieved April 25, 2016.
- Murakami, Koji (July 29, 2010). "Joryū Puro Shōkaku, Atsui Kabe: Shōgi Renmai Shiseido, Ichi-nen Amari de Hitori dake" 女流プロ昇格, 厚い壁 将棋連盟新制度,１年余で１人だけ [High barriers to becoming a female professional: Only one woman has achieved professional status in a little over a year since the JSA instituted new system]. Asahi Shimbun (in Japanese). Retrieved April 25, 2016.
- Hodges, George, ed. (1980). "Life at the top is too tough for the ladies". Shogi (25): 9.
- "Polish woman becomes 1st non-Japanese shogi pro". NHK World. February 20, 2017. Archived from the original on February 21, 2017. Retrieved February 21, 2017.
- "Polish woman becomes first foreign female pro 'shogi' player in Japan". The Japan Times. Kyodo News. February 21, 2017. Retrieved February 21, 2017.
- Murase, Shinya (February 21, 2017). "Polish woman, 25, becomes first foreign 'shogi' professional". Asahi Shimbun. Retrieved February 21, 2017.
- "Parity takes over 'shogi' world as major titles all in different hands". Asahi Shimbun. July 18, 2018. Retrieved October 18, 2018.
- "Shogi pros warned not to play computers". The Japan Times. October 16, 2005. Retrieved December 12, 2016.
Professional shogi players have been told not to compete against computer programs in public without permission from their association in the face of emerging competitive software, association officials said Saturday. The Japan Shogi Association says it will respond discreetly if such a match offer is made.
- Otake, Tomoko (November 2, 2011). "Shōgi showdown for supercomputer". The Japan Times. Retrieved December 12, 2016.
- "Computer no match for the king of 'shogi'". The Japan Times. Kyodo News. March 22, 2007. Retrieved December 12, 2016.
- "Shogi computer beats female champ Shimizu". Mainichi Shimbun. October 12, 2010. Archived from the original on October 13, 2010. Retrieved December 12, 2016.
- "Fujitsu's Shogi Software Tops Former Shogi Champion Kunio Yonenaga" (Press release). Fujitsu. January 16, 2012. Retrieved December 12, 2016.
- "Computer beats active 'shogi' pro for first time". The Japan Times. Kyodo News. March 31, 2013. Retrieved December 12, 2016.
- "Pro shogi players defeated by computer programs". The Japan Times. Kyodo News. April 22, 2013. Retrieved December 12, 2016.
- "Dowango - Nihon Shōgi Renmei Shusai Shinkisenmei wa "Eiōsen" ni Kettei, Hyaku Gojūyonmei no Puro Kishi ga Entorī" ドワンゴ・日本将棋連盟主催 新棋戦名は ｢叡王戦｣ に決定, 154名のプロ棋士がエントリー [New tournament sponsored by the JSA and Dwango to be called the "Eioh-sen": 154 professional male players will participate] (in Japanese). Japan Shogi Association. June 18, 2015. Retrieved December 19, 2016.
- Fukamatsu, Shinji (April 11, 2016). "AI beats top shogi player in first match of tournament final". Asahi Shimbun. Retrieved December 19, 2016.
- Yamamura, Hideki (May 22, 2016). "Shōgi Sofuto Rensho Hyaku Jūhachite de Yamasaki Hachidan Kudasu" 将棋ソフトが連勝 118手で山崎八段降す [Shogi software wins consecutive games, defeats Yamasaki 8d in 118 moves]. Mainichi Shimbun (in Japanese). Retrieved December 19, 2016.
- "Human vs. computer shogi series to end this year". Mainichi Shimbun. February 23, 2017. Retrieved February 28, 2017.
- Yamamura, Hideki (April 1, 2017). "Satō Meijin, Sofuto ni Yabureru Denōsen Daiikkyoku" 佐藤名人, ソフトに敗れる 電王戦第1局 [Meijin Satō defeated by computer in Game 1 of the Denō Match]. Mainichi Shimbun (in Japanese). Retrieved April 3, 2017.
- Murase, Shinya (October 13, 2016). "Shogi body checks potential cheats with ban on smartphones". Asahi Shimbun. Retrieved October 20, 2016.
- Yamamura, Hideki (February 10, 2017). "Nihon Shogi Renmei: Gaishūtsu Kinshi de Kishi Futari wo Bakkin Shobun" 日本将棋連盟: 外出禁止で棋士2人を罰金処分 [Japan Shogi Association: Two professionals fined for violating ban on leaving playing site]. Mainichi Shimbun (in Japanese). Retrieved February 13, 2017.
- "Kishi Futari ga Gaishūtsu Kinshi Kitei Ihan, Shōgi Renmei kara Genchūi to Bakkin Shobun" 棋士2人が外出禁止規定違反, 将棋連盟から厳重注意と罰金処分 [Two players violate rule on leaving playing site strongly warned and fined by the JSA]. Sports Hochi (in Japanese). February 10, 2017. Retrieved February 13, 2017.
- Shogi Fan: What is the rank system (dan) for Shogi?
- LPSA: 日本女子プロ将棋協会 ‹See Tfd›(in Japanese)
- shogidata.info · shows statistics for each professional player ‹See Tfd›(in Japanese)
- Japan Shogi Association: ‹See Tfd›(in Japanese)
- Shogi Hub: Master–Pupil Diagram