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Silver Horns Central Rook

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In shogi , Silver Horns Central Rook (ツノ銀中飛車 tsuno gin nakabisha ) is a type of Central Rook opening that uses the Silver Horn formation where the right and left silver are positioned at the ears of the player's rook, which is positioned on the bottom rank. Silver Horns uses a Kimura Mino (木村美濃) castle instead of the usual Mino castle .

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33-430: This ranging rook opening is characterized by moving the rook to the 5th file, and then placing the left silver at 67 (43, if playing White). If the opponent opts for a quick game, the game is played with the position as is, in which case it is called Incomplete Silver Horns (片ツノ銀 kata tsuno gin ). In case of a slow game, the right silver is placed at 47 (63, if playing White), the right gold at 38 (72) or 48 (62), and

66-473: A rook–silver fork (see subsections below) both of which are severe for the Static Rook opponent. After White's premature eighth pawn trade, a bigger blunder by White would be reflexively capturing Black's seventh file pawn with 6... Px74? Black will not capture the 74-pawn with their rook (7. Rx74?) as White may expect. With White's 73 pawn moved forward to rank 4, White's sitting king

99-495: A Double Ishida game, or, less commonly, P-44 prepares for an Opposing Rook position. The basic position of Quick Ishida is after 6 moves. Black usually needs to protect their king from a possible king–rook fork counterattack by White in later moves. Moving the king is the traditional joseki move. (But, also see the Suzuki variant .) If White defends against Quick Ishida after move 3, then

132-505: A Static Rook position, such as K-42 (the most common reply), P-54, P-14, and P-62. However, these moves create unfavorable positions for a Quick Ishida player. Therefore, these other replies usually lead to Black aiming not for a Quick Ishida opening but instead the slower normal Ishida formation, which, depending on the reply, can include closing Black's bishop diagonal with P-66 to prevent an inopportune bishop trade. Still other replies by White lead to Double Ranging Rook games: P-35 indicates

165-475: A Static Rook position, this could develop into a Quick Ishida game. However, it is also possible that the game could develop into the slower normal Ishida game. 2... P-84. White's second move is a major deciding factor in the game. Here, the rook is pushed forward clearly indicating a Static Rook position. Additionally, this move is signaling that White welcomes a Quick Ishida game. White does have other choices for this move that are still consistent with

198-449: A bishop trade off to occur at any time (often early in the opening), which are known as Bishop Exchange Ranging Rook (角交換振り飛車 kaku kōkan furibisha ) or Open Bishop Diagonal Ranging Rook (角道オープン振り飛車 kaku michi ōpen furibisha ). These openings include Quick Ishida , Cheerful Central Rook , Bishop Exchange Fourth File Rook , Direct Opposing Rook , among others. 1. P-76 P-34, 2. P-26. The Normal openings start by Black opening

231-584: A counterattack with a sleeve rook from 38 (72) is also a powerful tactic. On the other hand, it is very difficult for the static rook side to set up a quick game such as Climbing Silver , unlike the case of a static rook vs. Fourth File Rook . However, Katō-style Sleeve Rook and the Standing Gold strategy (金立ち戦法 kintachi senpō ) are known to be effective against White Central Rook. In addition, Static Rook Anaguma and King's Head Vanguard Pawn are effective countermeasures for slow game strategies. When

264-533: Is an aggressive variant of Fourth File Rook in which the Ranging Rook player keeps the bishop's diagonal open allowing for bishop trades early in the game. The Fujii System (藤井システム fujii shisutemu ) is a complex system of piece development, castle formation, and counterattacking to be used with Ranging Rook strategies. It was invented by shogi professional Takeshi Fujii (藤井猛). It is particularly useful against Static Rook's Anaguma strategies, which prior to

297-490: Is most common and flexible move for the White. From here, a bishop trade can occur at any time. At this point, the strategy of White is unknown. White could play a Static Rook opening leading to a Quick Ishida opening although they could just as well play a Ranging Rook opening leading to a Double Ranging Rook game. 2. P-75. On Black's second move, the seventh file pawn is pushed indicating an Ishida position. If White plays

330-466: Is now vulnerable to diagonal attacks. Thus, after White captures the horse with their left silver, Black drops their bishop to 95 forking White's king and rook. 9. Bx86 10. R-88   G-72 Since White must resolve the check (for instance, by fleeing leftwards), there is no way for White to save their rook. White losing their rook this early in the game is likely to be devastating. Furthermore, it will be difficult for White to protect

363-511: Is specifically referred to as Black's Ranging Rook (先手振り飛車 sente furibisha ). From its defensive origins, the standard way to play Ranging Rook openings is for the player to close the bishop's diagonal by advancing a pawn to the 66 square when played by Black or advancing to 44 when played by White. Thus, Ranging Rook is sometimes termed Ordinary Ranging Rook or Normal Ranging Rook (ノーマル振り飛車 nōmaru furibisha ) or Standard Ranging Rook (スタンダード振り飛車 sutandādo furibisha ) to contrast with

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396-460: Is to quickly attack White's seventh file pawn instead of moving the king away from their rook rightwards. The Quick Ishida is also often called Masuda Quick Ishida (升田式早石田 Masuda shiki haya ishida ). As a well established surprise attack, it's generally covered extensively in books for amateur players alongside the Climbing silver or bōgin opening. The fact that Kōzō Masuda , four time winner of

429-406: Is unprotected allowing White to promote their rook after a pawn trade. However, this would be a blunder . After White initiates the eighth file pawn trade, they capture Black's pawn positioning their rook on 86. Seeing this blunder, Black will immediately push their seventh file pawn threatening to break through White's camp. This position often leads to traps such as a king–rook fork or

462-530: The Third File Rook class of openings characterized by an open bishop diagonal. Like all Ishida variations , it has an early advancement of seventh file pawn when played by Black or third file pawn when played by White. The strategy initially has the Static Rook opponent aiming to attack the Ishida player's bishop head and while the Ishida player aims to counterattack breaking Static Rook's camp on

495-462: The Quick Ishida opening will often be abandoned in favor of the slower Ishida opening . Quick Ishida has several traps that must be defended against properly or else the opponent is at risk of swift and aggressive attacks. At first glance, after the initial 6 moves of the Quick Ishida position (namely, 1.P-76 P-34 2.P-75 P-84 3.R-78 P-85), it appears as if Black's bishop head at the 87 square

528-416: The bishop's diagonal (P-76) and showing the intention to play Static Rook (P-26). White responds by opening the bishop's diagonal as well. The order 1. P-76 P-34, 2. P-26 is the most common, but of course the moves may be transposed as in 1. P-26 P-34, 2. P-76. 2... P-44. The traditional, defensive play starts with the fourth move. With this standard move White prevents an early bishop exchange by closing

561-428: The bishop's diagonal. This allows White to start building the castle and further developing pieces without having to worry about bishop drops that would otherwise be possible if the bishop diagonal was left open and Black initiated a bishop exchange. These four opening moves characterize most Normal Ranging Rook positions when the rooks are moved to different files. After this, the most common moves by Black are to move

594-505: The development of the Fuiji system had started to seem invincible for Ranging Rook players. Third File Rook (三間飛車 sangenbisha ) openings position the rook on third file if played by White and the seventh file if played by Black. The Ishida (石田流 ishida-ryū ) openings – including Real Ishida (石田流本組 ishida-ryū hon gumi ) and Quick Ishida (早石田 haya ishida ) variations – are subcategories of Third File Rook in which

627-438: The game positions of both opponents, the term is Static Rook vs Ranging Rook (居飛車対振り飛車 ibisha tai furibisha ). In these games, Black has the initiative, and White quickly builds a defense by castling the king and seeks counterattacking opportunities. By default, the term 振り飛車 usually assumes that the Ranging Rook player is White as it was played traditionally. However, Ranging Rook positions are also possible for Black, when it

660-406: The king at 28 (82) or 38 (72) (this castle is called Kimura Mino ). The left gold is often set at 78 (32). As can be seen in the accompanying diagrams, this leads to a symmetrical stance. The name comes from the fact that the two silvers look like horns or antlers. Yasuharu Oyama used to favor a sequence of moves attacking with the gold and silver on the left while defending the king. In addition,

693-428: The middle rank 5 on their next move. Furthermore, Quick Ishida positions can only defend against a Static Rook opponent's rook pawn advances with a bishop trade and subsequent attack with bishop drop. Therefore, Quick Ishida is only possible if their Static Rook opponent also opens their bishop diagonal with P-34 allowing for the bishop trade possibility. 1... P-34. The opponent also opens their bishop diagonal. This

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726-522: The newer Ranging Rook strategies that keep the bishop's diagonal open. Since the traditional Ranging Rook prevents early bishop exchanges, it is described as a slow game (持久戦 jikyūsen ) in Japanese. Preventing an early bishop exchange allows for the Ranging Rook player to develop the castle and defense without needing to worry about being stymied by bishop drops. The traditional normal type of Ranging Rook contrasts with Ranging Rook positions that allow

759-453: The opponent's rook. Central Rook (中飛車) openings position the rook on the fifth (central) file. In another variant of Central Rook called Cheerful Central Rook (ゴキゲン中飛車) the bishop's diagonal is kept open. Fourth File Rook (四間飛車) is a Ranging Rook opening in which the rook is moved to fourth file if played by White and the sixth file if played by Black. Bishop Exchange Fourth File Rook (角交換四間飛車 kaku koukan shikenbisha )

792-471: The other types of games such as Double Static Rook (相居飛車 aiibisha ) and Static Rook vs Ranging Rook. Ranging Rook strategies are classified according to which file the rook moves to. They are generally named from White's perspective since the strategies were originally developed as defensive positions by White. For instance, the Third File Rook opening is named third file because when White moves

825-426: The pawn isn't pushed along 5th. file, it is called "Hi-chan style" after the nickname of Hideo Yamaguchi, who developed the tactic. In addition, another possibility (favored by players such as Hatasu Itō) is setting up the rook at the 1st. rank, and then moving the bishop to the 5th file, with the king sometimes castled in a Central House , which would constitute a Pinwheel formation. The pinwheel can be developed from

858-412: The player advances the rook's pawn, sending a false message to the opponent that they intend to play a Static Rook opening. Subsequently, the player positions the pieces in a Ranging Rook position and tries to take advantage of any poor piece development by the opponent. Quick Ishida In shogi , Quick Ishida , Rapid Ishida or Ishida Quick Attack (早石田 haya ishida ) is an Ishida variation of

891-542: The player's board to support an attack there. Ranging Rook strategies used in Ranging Rook vs Static Rook are among the oldest of shogi strategies attested in the historical documents that first describe the rules of shogi around 1600. Traditionally, Ranging Rook has been used as a defensive strategy for White against Static Rook openings played by Black. White's rook can be moved flexibly to counteract Black's attacks. These types of White openings are named simply Ranging Rook (振り飛車 furibisha ). In describing

924-415: The right side of their camp while simultaneously trying to prevent Black's rook drop within their camp. After move 15, Black drops their bishop to 77 forking White's rook and silver. This position favors Black. 2. P-75   P-84   Professional player Daisuke Suzuki (鈴木大介) has suggested a new variation on Quick Ishida after the initial Quick Ishida formation, which

957-482: The right silver up to the fourth file (3. S-48) or to continue advancing the rook's pawn (3. P-25). If Black chooses the rook's pawn option, White must respond by moving the bishop to the third file (3... B-33) to prevent Black from getting a pawn in hand through a pawn exchange on the second file. Double Ranging Rook (相振り飛車 aifuribisha ) is the class of openings when both players use Ranging Rook strategies. The josekis for these opening are less developed than many of

990-417: The rook into position, it will end up on the third file (R-32). If the same Third File Rook opening were played by Black, then Black's rook would move to the seventh file (R-78). The Opposing Rook opening moves a rook to the same file as the opponent's rook. For White, this Opposing Rook position is the second file (R-22) while the position played by Black is the eighth file (R-88). The moved rook thus opposes

1023-421: The seventh file pawn (if played by Black) or the third file pawn (if played by White) is advanced to the 5th rank early in the opening, allowing the rook to move up to 76 (or 34 for White). Opposing Rook (向かい飛車 mukai hisha ) positions the rook on eighth file (Black) where the bishop was originally (or the second file for White). Feint Ranging Rook (陽動振り飛車 yōdōfuribisha ) is a Ranging Rook opening in which

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1056-419: The seventh file with the threat of several different bishop drop positions. The Quick Ishida position can lead to a number of traps if the opponent does not defend properly. 1. P-76. The most common and most flexible first move found in shogi games. A player intending on a Quick Ishida position must open their bishop diagonal with P-76 on their first move since they will need to push this pawn up to

1089-404: The silver horns central rook, but there are also ways to aim for the pinwheel from the beginning (namely, Static Rook First File Rook or Right King to Pinwheel). This shogi-related article is a stub . You can help Misplaced Pages by expanding it . Ranging Rook Ranging Rook or Swinging Rook (振り飛車 furibisha ) openings in shogi position the rook to the center or left of

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