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Fortress Castle
Fortress or Yagura (矢倉囲い or 櫓囲い ''yaguragakoi'') is a castle used in shogi. It is considered by many to be the strongest defensive position in shogi in Double Static Rook games. The most common form of Fortress is the Gold Fortress. Besides the Gold Fortress, there are many variant forms. And, there are development relations between Fortress and other castles. For instance, the Crab castle can be developed into a Gold Fortress, and the Gold Fortress can be developed into a Fortress Anaguma. ''Fortress'' is also the name of an opening strategy that uses a Fortress castle (see: Fortress opening). When used in the Fortress opening, the bishop, rook, and a pawn all support a later attack by the rook's silver or knight. Variants of the Fortress are also used in other Double Static Rook games (for instance, Bishop Exchange) as well as in Static Rook vs Ranging Rook games and in Double Ranging Rook games. History A Fortress castle structure was first formed by Sans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castle (shogi)
In shogi, castles ( ja, 囲い, translit=kakoi) are strong defensive configurations of pieces that protect the king ( ja, 玉). In contrast to the special castling move in western chess, shogi castles are structures that require making multiple individual moves with more than one piece. Introduction Usually the pieces involved in constructing castles are golds ( ja, 金), silvers ( ja, 銀), and pawns ( ja, 歩). Typically, they also require moving the king from its starting position – often to the left or right side of the board. The simplest castle involves two pieces and requires three moves, but it is more common to move at least three different pieces. For example, a simple Mino castle requires moving the king, the rook ( ja, 飛), a silver, and two golds for a total of six moves. Others such as the Static Rook Bear-in-the-hole castle are more complex, which requires moving the king, a pawn, the bishop ( ja, 角), a lance ( ja, 香), a silver, and two golds for a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Right Fourth File Rook
In shogi, Right Fourth File Rook (右四間飛車 ''migi shikenbisha'') is a Static Rook opening in which the rook is positioned on the fourth file if played by Black or the sixth file if played by White. Typically, Right Fourth File Rook develops the right silver into a Reclining Silver attacking structure. Fortress vs Right Fourth File Rook Right Fourth File Rook vs Fourth File Rook A Right Fourth File Rook strategy may be played against a Ranging Rook position such as Fourth File Rook. In a Right Fourth File Rook vs Fourth File Rook game, each player's rook will be directly opposing each other on the fourth file supported by attacking silvers. Below shows an example of Black's Right Fourth File Rook against White's Fourth File Rook. 1. P-76 P-34, 2. P-26 P-44, 3. S-48 R-42. The first six moves are standard Static Rook vs Fourth File Rook piece development. (See: Left Silver-57 Rapid Attack vs Fourth File Rook for explication.) 4. P-46. The Right Fourth Fil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichitarō Doi
was a Japanese professional shogi player who achieved the rank of 8-dan (the highest rank at the time), and was the first president of the Japan Shogi Association. Doi was a student of , the thirteenth Lifetime Meijin, along with contemporary colleagues Yoshio Kimura, Yasujirō Kon, Chōtarō Hanada, and Tōichi Watanabe. Shogi professional Born in Matsuyama, Doi eventually moved to the Yūrakuchō district in Tokyo. With the guidance of teacher Kinjirō Sekine, Ichitarō Doi reached the rank of 4-dan in 1910. In 1917, Doi reached 8-dan. He along with Kinjirō Sekine, Sankichi Sakata (a potential Meijin candidate), and Kaiō Takeuchi (竹内翁) was one of the few players with an 8-dan rank at the time that Sekine became the thirteenth Meijin. Doi's record against Sakata was 1 win and 1 loss. As a strong player, when the Mejin system shifted to a tournament competition, Doi was one of the 8 competitors in the very first tournament league in 1937, all of which were defea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reclining Silver
In shogi, Reclining Silver (腰掛け銀 ''koshikakegin'') is a piece formation used in different Double Static Rook openings. It may also be played in Double Ranging Rook openings as well and in Right Fourth File Rook (Static Rook) positions against Ranging Rook positions. The Reclining Silver has the right silver positioned on central file above the central pawn and to the right of the silver is the pawn that was advancing in order to let the silver move through the line of pawns. The silver is said to recline on the seat of pawns. In the adjacent board diagram, both Black and White have created Reclining Silver positions. Black has their silver on 56 (with pawns on 46 and 57) while White has their silver on 54 (pawns on 53, 64). Reclining Silver can often played as a component of several different Static Rook openings such as Double Wing or Bishop Exchange. Clanging Silvers Clanging Silvers (ガッチャン銀 ''gatchan gin'') is an attacking development from a Dou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edo Period
The or is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's 300 regional '' daimyo''. Emerging from the chaos of the Sengoku period, the Edo period was characterized by economic growth, strict social order, isolationist foreign policies, a stable population, perpetual peace, and popular enjoyment of arts and culture. The period derives its name from Edo (now Tokyo), where on March 24, 1603, the shogunate was officially established by Tokugawa Ieyasu. The period came to an end with the Meiji Restoration and the Boshin War, which restored imperial rule to Japan. Consolidation of the shogunate The Edo period or Tokugawa period is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's regional '' daimyo''. A revolution took place from the time of the Kamakura shogunate, which existed with the Tennō's court, to the Tok ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bishop Exchange, Double Reclining Silver
In shogi, Bishop Exchange Reclining Silver or Reclining Silver With Bishops Off or Bishop Exchange Sitting Silver (角換わり腰掛け銀 ''kakugawari koshikakegin'') is a Bishop Exchange (Double Static Rook) opening that uses a Reclining Silver attacking formation. If both sides play Reclining Silver, then the position is known as Double Reclining Silver or Mutual Reclining Silver or Twin Reclining Silver (相腰掛け銀 ''aikoshikakegin''). Overview To defend the left flank against the opponent's rook pawn, Black chooses a Yagura castle form with left silver on the 77 square and the left gold on 78. Then, to avoid the risk of White's bishop drop inside Black's promotion zone, the right gold will be positioned other variously on the 58, 48 or 47 squares. According to the shogi proverb, "In the Bishop Exchange opening, don't push the central pawn." Following this, the fifth file pawn in Bishop Exchange Reclining Silver must remain on its starting 57 square in order fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akira Inaba
is a Japanese professional shogi player, ranked 8-dan. Inaba, together with Tetsurō Itodani, Masayuki Toyoshima and Akihiro Murata, is one of four Kansai-based young shogi professionals who are collectively referred to as the "Young Kansai Big Four" (関西若手四天王 ''Kansai Wakate Shitennō''). Promotion history Inaba's promotion history is as follows: * 6-kyū: September 2000 * 4-dan: April 1, 2008 * 5-dan: March 8, 2011 * 6-dan: May 1, 2012 * 7-dan: August 16, 2013 * 8-dan: February 18, 2016 Titles and other championships Inaba has appeared in a major title match only once: he was the challenger for the Meijin title in 2017. He earned the right to challenge Amahiko Satō is a Japanese professional shogi player, ranked 9-dan. He is a former Meijin title holder. Early life Satō was born in Fukuoka on January 18, 1988. He attended elementary school and junior high school in Fukuoka, but moved to Chiba Prefecture to ... for the title by winning the 2016-2017 Class A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akira Watanabe (shogi)
is a Japanese professional shogi player ranked 9-dan. He is the current holder of the Meijin, and Kiō major titles, and also a former holder of the Kisei, Ōshō, Ōza and Ryūō titles. He is also a Lifetime Kiō and a Lifetime Ryūō title holder. Early life Watanabe was born on April 23, 1984, in Katsushika, Tokyo. He learned how to play shogi from his father, who was an amateur 5-dan ranked player. He won the in 1994 as a fourth-grade student at Hokizuka Elementary School. He was the first fourth-grade winner in the history of the tournament. That same year Watanabe took the entrance exam for the Japan Shogi Association's apprentice school. Part of his test was a game against future women's professional Sayuri Takebe, who was member of the apprentice school at the time. The entire game was played at an extremely fast pace, with Watanabe winning in less than two minutes. Watanabe passed the entrance exam and entered the apprentice school as a 6-kyū protegee of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Makoto Nakahara
is a retired Japanese professional shogi player who achieved the rank of 9-dan. He is one of the strongest shogi players of the Shōwa period (1926–1989) and holds the titles of Lifetime Kisei, Lifetime Meijin, , Lifetime Ōi, and Lifetime Ōza. Nakahara served as the president of the Japan Shogi Association from May 2003 until May 2005. He retired from professional shogi in March 2009 at age 61 due to health reasons. Nakahara castle Nakahara won the Kōzō Masuda Award in 1996 for developing the " Nakahara castle" (中原囲い) as a counter strategy to the Side Pawn Capture opening. Major titles and other championships Nakahara appeared in 91 major title matches and won 64 major titles during his career. He won the Kisei title sixteen times, the Meijin title fifteen times, the eleven times, the Ōi title eight times, the Osho title seven times, Oza title six times, and the Kioh title once. He holds the titles of Lifetime Kisei, Lifetime Meijin is one of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kunio Yonenaga
was a Japanese professional shogi player and president of Japan Shogi Association (May, 2005 - December 18, 2012). He received an honorary title Lifetime Kisei due to his remarkable results in the Kisei title tournament. He is a former Meijin and 10-dan. Biography Yonenaga was born in Masuho, Yamanashi in 1943. He became a disciple of shogi professional Yūji Sase and moved to Tokyo to live with his teacher to become a professional. Yonenaga became a professional in 1963, and was promoted to 9 dan in 1979. Yonenaga was regarded as one of the best shogi players through the 1970s and 1980s. He won Kisei, his first titleholder championship in 1973 and dominated four of the seven shogi titles in 1984. He was awarded as Best Shogi Player of the Year thrice (1978, 1983 and 1984), though he had not won a Meijin title, then regarded the supreme tournament, for decades. He finally won Meijin in 1993 when he was 49 (the oldest on record), but he was defeated by Yoshiharu Habu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zugzwang
Zugzwang (German for "compulsion to move", ) is a situation found in chess and other turn-based games wherein one player is put at a disadvantage because of their obligation to make a move; a player is said to be "in zugzwang" when any legal move will worsen their position. Although the term is used less precisely in games such as chess, it is used specifically in combinatorial game theory to denote a move that directly changes the outcome of the game from a win to a loss. Putting the opponent in zugzwang is a common way to help the superior side win a game, and in some cases it is necessary in order to make the win possible. The term ''zugzwang'' was used in German chess literature in 1858 or earlier, and the first known use of the term in English was by World Champion Emanuel Lasker in 1905. The concept of zugzwang was known to chess players many centuries before the term was coined, appearing in an endgame study published in 1604 by Alessandro Salvio, one of the first writers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Repetition Draw
''Sennichite'' (千日手, ''lit.'' "moves (for) a thousand days") or repetition draw is a rule in shogi stating that the game will end in a draw if the same position is repeated four times during a game as long as the repetitions do not involve checks. Explanation If the same game position occurs four times with the same player to move and the same pieces in hand for each player, then the game ends in ''sennichite'' iff the positions are not due to perpetual check. (Perpetual check is an illegal move, which ends the game in a loss in tournament play.) In professional shogi, a ''sennichite'' outcome is not a final result of a match as draws essentially do not count. There can be only one victorious through wins. This is a significant difference from western chess, in which a player can play specifically to obtain draws for gaining half points. In the case of ''sennichite'', professional shogi players will have to immediately play a subsequent game (or as many games as necessary) w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
