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Sleeve Rook

2024-01-27T09:40:55Z

Shogi Harbour: /* Habu style Sleeve Rook */

'''Sleeve Rook''' (袖飛車 ''Sodebisha'') is an opening in shogi in which the rook is moved to the third file from the right from the perspective of the player. Alternatively it was translated to '''Sidestepped Rook''' in ''The Art Of Shogi''.<ref>Hosking, A. L. (2003). Sleeve Rook (Sodebisha). In ''The Art Of Shogi'' (2nd ed., p. 168). essay, Shogi Foundation.</ref>

It is generally known as part of [[Static Rook]] opening category but can be used in [[Swinging Rook]] as well. It is a standalone opening, though some opening variations can include lines with this move.

Some sources claim that the inventor of this strategy is said to be [[Sankichi Sakata]] (坂田三吉)<ref name=":0">[https://ja.wikipedia.org/w/index.php?title=%E8%A2%96%E9%A3%9B%E8%BB%8A&oldid=94858584 "袖飛車"] from Wikipedia: the free Encyclopedia, retrieved on 13 January 2024 15:58 (UTC)</ref>, yet others say: <blockquote>"The most spectacular advances in opening technique can be atributed [sic!] to the 4th Lifetime Meijin, Ohashi Sokei, at the tail end of the 17th century, but the Central, 4th-file, 3rd-file, Opposing and Sleeve Rook openings had all made their appearance as early as 1600." <ref>Hodges, George, ed. (Nov. 1977). "Shogi Openings". Shogi (10): 12.</ref></blockquote>
* An example of Ohashi's (初代大橋宗桂) game might be a match played in 1615. <ref>[https://playshogi.com/#ViewKifu:20650:25 Sokei Ohashi vs Hon'inbō Sansa] (1615) from PlayShogi.com</ref> (Diag.1)
* One example of Sakata's game is a match played on 13 April 1913, Sankichi Sakata vs Kinjiro Sekine (関根金次郎).<ref>[https://playshogi.com/#ViewKifu:31322:21 Sankichi Sakata vs Kinjiro Sekine] (13 April 1913) from PlayShogi.com</ref> (Diag.2)
{|
|
{{shogi diagram
|
| '''Diag 1. - Ohashi'''
| –
| lg | ng | | gg | kg | gg | | ng | lg
| | rg | | | | | | bg |
| | | | | sg | sg | | pg | pg
| pg | | pg | pg | pg | pg | pg | |
| | pg | | | | | | |
| ps | | ps | ss | ps | ps | ps | |
| | ps | bs | ps | | ss | | ps | ps
| | | gs | | | | rs | |
| ls | ns | | | ks | gs | | ns | ls
| –
| Until ☗R-38
}}
|
{{shogi diagram
|
| '''Diag. 2 - Sakata'''
| –
| lg | ng | | | | gg | | ng | lg
| | rg | | sg | gg | kg | sg | bg |
| pg | | | pg | | | | pg | pg
| | | pg | | pg | pg | pg | |
| | pg | | | | | | |
| | | ps | ps | ps | | ps | |
| ps | ps | bs | ss | ss | ps | | ps | ps
| | | gs | | | | rs | |
| ls | ns | | | ks | gs | | ns | ls
| –
| Until ☗R-38
}}
|}

In both cases ☗P-36 ~ ☗R38 were played without pushing the rook pawn once.

Sakata's game specifically is a Gangi opening with Reclining Right Silver's attack, which may be what some resources are calling ''Sakata's Style Sleeve Rook''. <ref name=":0" />

= Name Origin =
The name comes from the fact that the rook moves to one square to the left from the main position - like a sleeve is next to an arm.

= Classification =
The definition of Sleeve Rook opening is very vague. Unlike other openings where the rook moving early in the opening may indicate a certain strategy (like rook on 4th file is 4th File Rook), Sleeve Rook can be played early or much later in the middlegame. It can be a part of another opening e.g. Static Rook vs 3rd File Rook, where Static Rook plays R-72 to counter 3rd File head on. In that case it would not be called a Sleeve Rook opening, but could be considered a Sleeve Rook formation.

=== Against Static Rook ===
In Double Static Rook opening it may be used with Yagura, Gangi and others. The point of the strategy is that the rook targets the opponent's king's head directly. Usually the right silver will join the attack on the third file. An example of such attack is in a match played on 14 April 1922 between Chotaro Hanada and Sankichi Sakata.<ref>[https://playshogi.com/#ViewKifu:29024:22 Chotaro Hanada and Sankichi Sakata] (17 April 1922) from PlayShogi.com</ref>

{{shogi diagram
|
| '''Diag. 3 - King's head targetted'''
| –
| lg | ng | | gg | kg | gg | | ng | lg
| | | rg | | | | | |
| pg | pg | | pg | | sg | bg | pg | pg
| | | pg | sg | pg | pg | pg | |
| | | | | | | | ps |
| | | ps | | ps | | ps | |
| ps | ps | ss | ps | | ps | | | ps
| | bs | ks | | gs | ss | | rs |
| ls | ns | | gs | | | | ns | ls
| –
| Until ☗R-72
}}

Sleeve Rook makes appearances in more modern professional games played by [[Kunio Naito]] (内藤國雄), [[Manabu Senzaki]] (先崎学), [[Akira Watanabe]](渡辺明), [[Keita Inoue]] (井上慶太), [[Masakazu Kondo]] (近藤正和) and others..

Kunio Naito, who was a disciple of Sakata’s disciple ("grand-pupil" 孫弟子), published in a 1982 edition of Shogi Magazine 将棋マガジン a lecture about Sleeve Rook based on ''Sakata's Style''.<ref name=":0" /> Unlike Diag. 2 he suggested that ☗B-77, which defends the rook pawn exchange, should be omitted. Instead one recommendation was from Diag.4 ☖P-44, ☗S-46 ☖G-43, ☗P-35 ☖Px, ☗Sx ☖S-33, ☗P*34 ☖S-24 (defensive tactic), but ☗Sx24 ☖Px, ☗S*35 ☖S*23, ☗B-79.

{{shogi diagram
|
| '''Diag. 4 - ☗B-77 omitted'''
| –
|lg|ng| | | |gg| |ng|lg
| |rg| |sg|gg|kg|sg|bg|
|pg| |pg|pg| |pg| |pg|pg
| | | | |pg| |pg| |
| |pg| | | | | | |
| | |ps|ps|ps| |ps| |
|ps|ps| |ss|ss|ps| |ps|ps
| |bs| | | | |rsl| |
|ls|ns| |gs|ks|gs| |ns|ls
| –
| Until ☗R-38
}}

Naito uses this strategy in his professional matches, like on 10th August 1971, 10-Dan Tournament Eliminations vs Kiyozumi Kiriyama (桐山清澄)<ref>[https://playshogi.com/#ViewKifu:37207:29 Kunio Naito vs Kiyozumi Kiriyama] (10 August 1971) from PlayShogi.com</ref> or 7th February 1975, NHK Cup Shogi Tournament vs Hifumi Kato (加藤一二三)<ref>[https://playshogi.com/#ViewKifu:38222:28 Hifumi Kato vs Kunio Naito] (7 February 1975) from PlayShogi.com</ref>.

=== Gote's Sleeve Rook ===

==== On move 2. ☖P-74 and 4. ☖P-74 Strategies ====
A very specific example of Sleeve Rook is [[Sente / Gote|Gote]]'s ☖P-74 on the 2nd move.

===== Immediate ☗B-55 =====
☗P-76 ☖P-74, where worth mentioning is [[Sente / Gote|Sente]]'s move ☗B-55. Gote won't back off ☖P-34, ☗Bx88+ ☖Sx, ☗S-88 leads to ☖B*95! A difficult to defend check: ☗R*87 or ☗R*77 - Sente is forced to drop the rook from the hand. A mistake would be ☗S-77 because of ☖Bx(95), ☗Nx ☖Bx+ leads to two for one exchange.

Which makes ☗R-76 ☖P-74 ~ ☖R-72 a possible strategy for Gote.

This strategy was first played by [[Osamu Nakamura]]. There is also example of ☖P-74 on the 4th move played by Inoue in an official match.<ref name=":0" />

==== Habu style Sleeve Rook ====
Habu style (羽生流 ''Habu Ryu'' or 羽生式 ''Habu shiki'') is a shape that came up in 2018 Kiousen title match game 3, where [[Yoshiharu Habu]] faced [[Masayuki Toyoshima]]. From the initial position: ☗ P-26 ☖G-32, ☗P-25 ☖R-72.<ref>[https://shogidb2.com/games/29aeeeee1c259dd854796d641361fd639e60d0f4#lnsgk1snl%2F2r3gb1%2Fpp1pppppp%2F2p6%2F7P1%2F9%2FPPPPPPP1P%2F1BG4R1%2FLNS1KGSNL%20b%20-%207 Yoshiharu Habu vs Masayuki Toyoshima] (2018) from ShogiDB2</ref>

[diag.5-6]

As shown on diagram 6, after taking 7th file vanguard pawn, Habu pulled his rook into a [[Floating Rook]] position. The point is that Sente is not able to open their bishop's diagonal, making it difficult for them to utilize the bishop.

=== Against Swinging Rook ===

=== Sleeve Rook in Swinging Rook strategy ===

=== Other ===

==== Climbing King Sleeve Rook ====

= References =
<references />
[[Category:Strategies]]

File:Habu style sleeve rook.png

2024-01-27T09:38:08Z

Shogi Harbour:

three positions from his 2018 game

To check is to chase

2024-01-18T16:57:44Z

Shogi Harbour: Created page with "'''To check is to chase''' (王手は追う手 ote ha ote) is a proverb to remind the player that check might not be the most efficient way to capture a king, allowing it to escape. In certain situations it might be easier to capture the king by surrounding it, without making a check (chasing). See hisshi. Category:Proverbs"

'''To check is to chase''' (王手は追う手 ote ha ote) is a proverb to remind the player that check might not be the most efficient way to capture a king, allowing it to escape. In certain situations it might be easier to capture the king by surrounding it, without making a check (chasing). See [[hisshi]].
[[Category:Proverbs]]

Castle

2024-01-18T16:55:07Z

Shogi Harbour:

A '''castle''' (囲い ''kakoi'', literally "enclosure") is a defensive formation consisting of two to four connected generals that guard the king. There are a wide array of castles to choose from, and using a particular castle (or choosing not to castle) is a strategic decision that could make the difference between victory and defeat. The two main factors to consider are the type of opening being played and the direction of the attack. In accordance with the proverb "Keep the king and rook separated", a player using a [[Swinging Rook]] strategy (where the rook moves to the left side of the board) will typically castle to the right, while a player using a [[Static Rook]] strategy (where the rook stays on the right side) will castle to the left. There are exceptions to this rule, such as central castles. With the recent popularity of rapid attacks, it's not uncommon for even pro shogi players to forego castling entirely, using only a cursory defense as needed.

A position where the king doesn't move is called [[Sitting King]] and is used in recent modern openings like [[Bishop Exchange]].

= Swinging Rook Castles (Right-side Castles) =
These castles are typically employed by a Swinging Rook player. The Mino Castle and its variants are the most commonly employed against a Static Rook strategy, as they are strong on the sides but, in a Double Swinging Rook game, players may opt for a castle which can resist attacks from above, such as the Peerless Golds or Right Yagura. The most known castles are:

=== vs Static Rook openings ===
* Mino Castle
* High Mino
* Silver Crown
* Kimura Mino
* Half Mino
* Diamond Mino
* Swinging Rook Anaguma (Furi-Ana), 2-4 generals combinations
* Cozy Castle
* Other

=== in Double Swinging Rook openings ===
* Peerless Golds (old Twin Gold, Gold Excelsior)
* Right-side Anaguma
* Right-side Yagura
* Other

= Static Rook Castles (Left-side Castles) =
These castles are most commonly used by Static Rook players. Yagura is considered a very sturdy castle in a Double Static Rook game, but can be slow to construct. The Boat and elmo castles are quicker castles that allow for a rapid attack against a Swinging Rook strategy, but are not as solid as an Anaguma or Mino.

=== in Double Static Rook openings ===
* Crab Castle
* Yagura (Fortress) and its variations
* Gangi
* Other

=== vs Swinging Rook openings ===
* Boat Castle
* elmo Castle
* Static Rook Anaguma (Ibi-Ana)
* Leftside Mino
* Silver Crown
* Yonenaga's King
* Millenium Castle
* Other

= Central Castles =
While not very common due to the difficulty of needing to defend on both sides, some strategies keep the king and defending generals in the center of the board, allowing for a faster attack and guarding against drops within the camp. E.g. Side-Pawn Picker (Double Static) or Takada-Style (Double Ranging). Rarely used in Opposition shogi.

* Central House (Nakazumai)
* Nakahara's Castle (Nakahara's King)
* Duck
* Invincible Castle
* Other

= Others =
Handicap games use special castles like Silver Tandem and others.

Interposing piece

2024-01-18T16:49:54Z

Shogi Harbour: category

'''Interposing piece''' or '''blocking piece''' (合い駒 or 合駒 ''aigoma'') a piece that is put (dropped or moved) between attacking piece and the piece that is being attacked, e.g. to block a check on the king.
[[Category:Terminology]]

Interposing piece

2024-01-18T16:49:06Z

Shogi Harbour: Created page with "'''Interposing piece''' or '''blocking piece''' (合い駒 or 合駒 ''aigoma'') a piece that is put (dropped or moved) between attacking piece and the piece that is being attacked, e.g. to block a check on the king."

Castle

2024-01-18T16:41:07Z

Shogi Harbour: first phrase

'''Castle''' (囲い ''kakoi'', literally "enclosure") is a defensive formation consisting of two to four connected generals that guard the king. There are a wide array of castles to choose from, and using a particular castle (or choosing not to castle) is a strategic decision that could make the difference between victory and defeat. The two main factors to consider are the type of opening being played and the direction of the attack. In accordance with the proverb "Keep the king and rook separated", a player using a [[Swinging Rook]] strategy (where the rook moves to the left side of the board) will typically castle to the right, while a player using a [[Static Rook]] strategy (where the rook stays on the right side) will castle to the left. There are exceptions to this rule, such as central castles. With the recent popularity of rapid attacks, it's not uncommon for even pro shogi players to forego castling entirely, using only a cursory defense as needed.

A position where the king doesn't move is called [[Sitting King]] and is used in recent modern openings like [[Bishop Exchange]].

= Swinging Rook Castles (Right-side Castles) =
These castles are typically employed by a Swinging Rook player. The Mino Castle and its variants are the most commonly employed against a Static Rook strategy, as they are strong on the sides but, in a Double Swinging Rook game, players may opt for a castle which can resist attacks from above, such as the Peerless Golds or Right Yagura. The most known castles are:

=== vs Static Rook openings ===
* Mino Castle
* High Mino
* Silver Crown
* Kimura Mino
* Half Mino
* Diamond Mino
* Swinging Rook Anaguma (Furi-Ana), 2-4 generals combinations
* Cozy Castle
* Other

=== in Double Swinging Rook openings ===
* Peerless Golds (old Twin Gold, Gold Excelsior)
* Right-side Anaguma
* Right-side Yagura
* Other

= Static Rook Castles (Left-side Castles) =
These castles are most commonly used by Static Rook players. Yagura is considered a very sturdy castle in a Double Static Rook game, but can be slow to construct. The Boat and elmo castles are quicker castles that allow for a rapid attack against a Swinging Rook strategy, but are not as solid as an Anaguma or Mino.

=== in Double Static Rook openings ===
* Crab Castle
* Yagura (Fortress) and its variations
* Gangi
* Other

=== vs Swinging Rook openings ===
* Boat Castle
* elmo Castle
* Static Rook Anaguma (Ibi-Ana)
* Leftside Mino
* Silver Crown
* Yonenaga's King
* Millenium Castle
* Other

= Central Castles =
While not very common due to the difficulty of needing to defend on both sides, some strategies keep the king and defending generals in the center of the board, allowing for a faster attack and guarding against drops within the camp. E.g. Side-Pawn Picker (Double Static) or Takada-Style (Double Ranging). Rarely used in Opposition shogi.

* Central House (Nakazumai)
* Nakahara's Castle (Nakahara's King)
* Duck
* Invincible Castle
* Other

= Others =
Handicap games use special castles like Silver Tandem and others.

Castle (shogi)

2024-01-18T16:39:24Z

Shogi Harbour: Shogi Harbour moved page Castle (shogi) to Castle: we all know this is shogi

#REDIRECT [[Castle]]

Castle

2024-01-18T16:39:24Z

Shogi Harbour: Shogi Harbour moved page Castle (shogi) to Castle: we all know this is shogi

In shogi, a '''castle''' (囲い ''kakoi'', literally "enclosure") is a defensive formation consisting of two to four connected generals that guard the king. There are a wide array of castles to choose from, and using a particular castle (or choosing not to castle) is a strategic decision that could make the difference between victory and defeat. The two main factors to consider are the type of opening being played and the direction of the attack. In accordance with the proverb "Keep the king and rook separated", a player using a [[Swinging Rook]] strategy (where the rook moves to the left side of the board) will typically castle to the right, while a player using a [[Static Rook]] strategy (where the rook stays on the right side) will castle to the left. There are exceptions to this rule, such as central castles. With the recent popularity of rapid attacks, it's not uncommon for even pro shogi players to forego castling entirely, using only a cursory defense as needed.

A position where the king doesn't move is called [[Sitting King]] and is used in recent modern openings like [[Bishop Exchange]].

= Swinging Rook Castles (Right-side Castles) =
These castles are typically employed by a Swinging Rook player. The Mino Castle and its variants are the most commonly employed against a Static Rook strategy, as they are strong on the sides but, in a Double Swinging Rook game, players may opt for a castle which can resist attacks from above, such as the Peerless Golds or Right Yagura. The most known castles are:

=== vs Static Rook openings ===
* Mino Castle
* High Mino
* Silver Crown
* Kimura Mino
* Half Mino
* Diamond Mino
* Swinging Rook Anaguma (Furi-Ana), 2-4 generals combinations
* Cozy Castle
* Other

=== in Double Swinging Rook openings ===
* Peerless Golds (old Twin Gold, Gold Excelsior)
* Right-side Anaguma
* Right-side Yagura
* Other

= Static Rook Castles (Left-side Castles) =
These castles are most commonly used by Static Rook players. Yagura is considered a very sturdy castle in a Double Static Rook game, but can be slow to construct. The Boat and elmo castles are quicker castles that allow for a rapid attack against a Swinging Rook strategy, but are not as solid as an Anaguma or Mino.

=== in Double Static Rook openings ===
* Crab Castle
* Yagura (Fortress) and its variations
* Gangi
* Other

=== vs Swinging Rook openings ===
* Boat Castle
* elmo Castle
* Static Rook Anaguma (Ibi-Ana)
* Leftside Mino
* Silver Crown
* Yonenaga's King
* Millenium Castle
* Other

= Central Castles =
While not very common due to the difficulty of needing to defend on both sides, some strategies keep the king and defending generals in the center of the board, allowing for a faster attack and guarding against drops within the camp. E.g. Side-Pawn Picker (Double Static) or Takada-Style (Double Ranging). Rarely used in Opposition shogi.

* Central House (Nakazumai)
* Nakahara's Castle (Nakahara's King)
* Duck
* Invincible Castle
* Other

= Others =
Handicap games use special castles like Silver Tandem and others.

Sleeve Rook

2024-01-18T13:31:42Z

Shogi Harbour: /* On move 2. △P-74 Strategy */

'''Sleeve Rook''' (袖飛車 ''Sodebisha'') is an opening in shogi in which the rook is moved to the third file from the right from the perspective of the player. Alternatively it was translated to '''Sidestepped Rook''' in ''The Art Of Shogi''.<ref>Hosking, A. L. (2003). Sleeve Rook (Sodebisha). In ''The Art Of Shogi'' (2nd ed., p. 168). essay, Shogi Foundation.</ref>

It is generally known as part of [[Static Rook]] opening category but can be used in [[Swinging Rook]] as well. It is a standalone opening, though some opening variations can include lines with this move.

Some sources claim that the inventor of this strategy is said to be [[Sankichi Sakata]] (坂田三吉)<ref name=":0">[https://ja.wikipedia.org/w/index.php?title=%E8%A2%96%E9%A3%9B%E8%BB%8A&oldid=94858584 "袖飛車"] from Wikipedia: the free Encyclopedia, retrieved on 13 January 2024 15:58 (UTC)</ref>, yet others say: <blockquote>"The most spectacular advances in opening technique can be atributed [sic!] to the 4th Lifetime Meijin, Ohashi Sokei, at the tail end of the 17th century, but the Central, 4th-file, 3rd-file, Opposing and Sleeve Rook openings had all made their appearance as early as 1600." <ref>Hodges, George, ed. (Nov. 1977). "Shogi Openings". Shogi (10): 12.</ref></blockquote>
* An example of Ohashi's (初代大橋宗桂) game might be a match played in 1615. <ref>[https://playshogi.com/#ViewKifu:20650:25 Sokei Ohashi vs Hon'inbō Sansa] (1615) from PlayShogi.com</ref> (Diag.1)
* One example of Sakata's game is a match played on 13 April 1913, Sankichi Sakata vs Kinjiro Sekine (関根金次郎).<ref>[https://playshogi.com/#ViewKifu:31322:21 Sankichi Sakata vs Kinjiro Sekine] (13 April 1913) from PlayShogi.com</ref> (Diag.2)
{|
|
{{shogi diagram
|
| '''Diag 1. - Ohashi'''
| –
| lg | ng | | gg | kg | gg | | ng | lg
| | rg | | | | | | bg |
| | | | | sg | sg | | pg | pg
| pg | | pg | pg | pg | pg | pg | |
| | pg | | | | | | |
| ps | | ps | ss | ps | ps | ps | |
| | ps | bs | ps | | ss | | ps | ps
| | | gs | | | | rs | |
| ls | ns | | | ks | gs | | ns | ls
| –
| Until ☗R-38
}}
|
{{shogi diagram
|
| '''Diag. 2 - Sakata'''
| –
| lg | ng | | | | gg | | ng | lg
| | rg | | sg | gg | kg | sg | bg |
| pg | | | pg | | | | pg | pg
| | | pg | | pg | pg | pg | |
| | pg | | | | | | |
| | | ps | ps | ps | | ps | |
| ps | ps | bs | ss | ss | ps | | ps | ps
| | | gs | | | | rs | |
| ls | ns | | | ks | gs | | ns | ls
| –
| Until ☗R-38
}}
|}

In both cases ☗P-36 ~ ☗R38 were played without pushing the rook pawn once.

Sakata's game specifically is a Gangi opening with Reclining Right Silver's attack, which may be what some resources are calling ''Sakata's Style Sleeve Rook''. <ref name=":0" />

= Name Origin =
The name comes from the fact that the rook moves to one square to the left from the main position - like a sleeve is next to an arm.

= Classification =
The definition of Sleeve Rook opening is very vague. Unlike other openings where the rook moving early in the opening may indicate a certain strategy (like rook on 4th file is 4th File Rook), Sleeve Rook can be played early or much later in the middlegame. It can be a part of another opening e.g. Static Rook vs 3rd File Rook, where Static Rook plays R-72 to counter 3rd File head on. In that case it would not be called a Sleeve Rook opening, but could be considered a Sleeve Rook formation.

=== Against Static Rook ===
In Double Static Rook opening it may be used with Yagura, Gangi and others. The point of the strategy is that the rook targets the opponent's king's head directly. Usually the right silver will join the attack on the third file. An example of such attack is in a match played on 14 April 1922 between Chotaro Hanada and Sankichi Sakata.<ref>[https://playshogi.com/#ViewKifu:29024:22 Chotaro Hanada and Sankichi Sakata] (17 April 1922) from PlayShogi.com</ref>

{{shogi diagram
|
| '''Diag. 3 - King's head targetted'''
| –
| lg | ng | | gg | kg | gg | | ng | lg
| | | rg | | | | | |
| pg | pg | | pg | | sg | bg | pg | pg
| | | pg | sg | pg | pg | pg | |
| | | | | | | | ps |
| | | ps | | ps | | ps | |
| ps | ps | ss | ps | | ps | | | ps
| | bs | ks | | gs | ss | | rs |
| ls | ns | | gs | | | | ns | ls
| –
| Until ☗R-72
}}

Sleeve Rook makes appearances in more modern professional games played by [[Kunio Naito]] (内藤國雄), [[Manabu Senzaki]] (先崎学), [[Akira Watanabe]](渡辺明), [[Keita Inoue]] (井上慶太), [[Masakazu Kondo]] (近藤正和) and others..

Kunio Naito, who was a disciple of Sakata’s disciple ("grand-pupil" 孫弟子), published in a 1982 edition of Shogi Magazine 将棋マガジン a lecture about Sleeve Rook based on ''Sakata's Style''.<ref name=":0" /> Unlike Diag. 2 he suggested that ☗B-77, which defends the rook pawn exchange, should be omitted. Instead one recommendation was from Diag.4 ☖P-44, ☗S-46 ☖G-43, ☗P-35 ☖Px, ☗Sx ☖S-33, ☗P*34 ☖S-24 (defensive tactic), but ☗Sx24 ☖Px, ☗S*35 ☖S*23, ☗B-79.

{{shogi diagram
|
| '''Diag. 4 - ☗B-77 omitted'''
| –
|lg|ng| | | |gg| |ng|lg
| |rg| |sg|gg|kg|sg|bg|
|pg| |pg|pg| |pg| |pg|pg
| | | | |pg| |pg| |
| |pg| | | | | | |
| | |ps|ps|ps| |ps| |
|ps|ps| |ss|ss|ps| |ps|ps
| |bs| | | | |rsl| |
|ls|ns| |gs|ks|gs| |ns|ls
| –
| Until ☗R-38
}}

Naito uses this strategy in his professional matches, like on 10th August 1971, 10-Dan Tournament Eliminations vs Kiyozumi Kiriyama (桐山清澄)<ref>[https://playshogi.com/#ViewKifu:37207:29 Kunio Naito vs Kiyozumi Kiriyama] (10 August 1971) from PlayShogi.com</ref> or 7th February 1975, NHK Cup Shogi Tournament vs Hifumi Kato (加藤一二三)<ref>[https://playshogi.com/#ViewKifu:38222:28 Hifumi Kato vs Kunio Naito] (7 February 1975) from PlayShogi.com</ref>.

=== Gote's Sleeve Rook ===

==== On move 2. ☖P-74 and 4. ☖P-74 Strategies ====
A very specific example of Sleeve Rook is [[Sente / Gote|Gote]]'s ☖P-74 on the 2nd move.

===== Immediate ☗B-55 =====
☗P-76 ☖P-74, where worth mentioning is [[Sente / Gote|Sente]]'s move ☗B-55. Gote won't back off ☖P-34, ☗Bx88+ ☖Sx, ☗S-88 leads to ☖B*95! A difficult to defend check: ☗R*87 or ☗R*77 - Sente is forced to drop the rook from the hand. A mistake would be ☗S-77 because of ☖Bx(95), ☗Nx ☖Bx+ leads to two for one exchange.

Which makes ☗R-76 ☖P-74 ~ ☖R-72 a possible strategy for Gote.

This strategy was first played by [[Osamu Nakamura]]. There is also example of ☖P-74 on the 4th move played by Inoue in an official match.<ref name=":0" />

==== Habu style Sleeve Rook ====

=== Against Swinging Rook ===

=== Sleeve Rook in Swinging Rook strategy ===

=== Other ===

==== Climbing King Sleeve Rook ====

= References =
<references />

Sleeve Rook

2024-01-14T17:06:39Z

Shogi Harbour: first big paragraph written, corrected introduction.

'''Sleeve Rook''' (袖飛車 ''Sodebisha'') is an opening in shogi in which the rook is moved to the third file from the right from the perspective of the player. Alternatively it was translated to '''Sidestepped Rook''' in ''The Art Of Shogi''.<ref>Hosking, A. L. (2003). Sleeve Rook (Sodebisha). In ''The Art Of Shogi'' (2nd ed., p. 168). essay, Shogi Foundation.</ref>

It is generally known as part of [[Static Rook]] opening category but can be used in [[Swinging Rook]] as well. It is a standalone opening, though some opening variations can include lines with this move.

Some sources claim that the inventor of this strategy is said to be [[Sankichi Sakata]] (坂田三吉)<ref name=":0">[https://ja.wikipedia.org/w/index.php?title=%E8%A2%96%E9%A3%9B%E8%BB%8A&oldid=94858584 "袖飛車"] from Wikipedia: the free Encyclopedia, retrieved on 13 January 2024 15:58 (UTC)</ref>, yet others say: <blockquote>"The most spectacular advances in opening technique can be atributed [sic!] to the 4th Lifetime Meijin, Ohashi Sokei, at the tail end of the 17th century, but the Central, 4th-file, 3rd-file, Opposing and Sleeve Rook openings had all made their appearance as early as 1600." <ref>Hodges, George, ed. (Nov. 1977). "Shogi Openings". Shogi (10): 12.</ref></blockquote>
* An example of Ohashi's (初代大橋宗桂) game might be a match played in 1615. <ref>[https://playshogi.com/#ViewKifu:20650:25 Sokei Ohashi vs Hon'inbō Sansa] (1615) from PlayShogi.com</ref> (Diag.1)
* One example of Sakata's game is a match played on 13 April 1913, Sankichi Sakata vs Kinjiro Sekine (関根金次郎).<ref>[https://playshogi.com/#ViewKifu:31322:21 Sankichi Sakata vs Kinjiro Sekine] (13 April 1913) from PlayShogi.com</ref> (Diag.2)
{|
|
{{shogi diagram
|
| '''Diag 1. - Ohashi'''
| –
| lg | ng | | gg | kg | gg | | ng | lg
| | rg | | | | | | bg |
| | | | | sg | sg | | pg | pg
| pg | | pg | pg | pg | pg | pg | |
| | pg | | | | | | |
| ps | | ps | ss | ps | ps | ps | |
| | ps | bs | ps | | ss | | ps | ps
| | | gs | | | | rs | |
| ls | ns | | | ks | gs | | ns | ls
| –
| Until ☗R-38
}}
|
{{shogi diagram
|
| '''Diag. 2 - Sakata'''
| –
| lg | ng | | | | gg | | ng | lg
| | rg | | sg | gg | kg | sg | bg |
| pg | | | pg | | | | pg | pg
| | | pg | | pg | pg | pg | |
| | pg | | | | | | |
| | | ps | ps | ps | | ps | |
| ps | ps | bs | ss | ss | ps | | ps | ps
| | | gs | | | | rs | |
| ls | ns | | | ks | gs | | ns | ls
| –
| Until ☗R-38
}}
|}

In both cases ☗P-36 ~ ☗R38 were played without pushing the rook pawn once.

Sakata's game specifically is a Gangi opening with Reclining Right Silver's attack, which may be what some resources are calling ''Sakata's Style Sleeve Rook''. <ref name=":0" />

= Name Origin =
The name comes from the fact that the rook moves to one square to the left from the main position - like a sleeve is next to an arm.

= Classification =
The definition of Sleeve Rook opening is very vague. Unlike other openings where the rook moving early in the opening may indicate a certain strategy (like rook on 4th file is 4th File Rook), Sleeve Rook can be played early or much later in the middlegame. It can be a part of another opening e.g. Static Rook vs 3rd File Rook, where Static Rook plays R-72 to counter 3rd File head on. In that case it would not be called a Sleeve Rook opening, but could be considered a Sleeve Rook formation.

=== Against Static Rook ===
In Double Static Rook opening it may be used with Yagura, Gangi and others. The point of the strategy is that the rook targets opponent's king's head directly. Usually right silver will join the attack on the third file. An example of such attack could be match played on 14 April 1922 between Chotaro Hanada and Sankichi Sakata.<ref>[https://playshogi.com/#ViewKifu:29024:22 Chotaro Hanada and Sankichi Sakata] (17 April 1922) from PlayShogi.com</ref>

{{shogi diagram
|
| '''Diag. 3 - King's head targetted'''
| –
| lg | ng | | gg | kg | gg | | ng | lg
| | | rg | | | | | |
| pg | pg | | pg | | sg | bg | pg | pg
| | | pg | sg | pg | pg | pg | |
| | | | | | | | ps |
| | | ps | | ps | | ps | |
| ps | ps | ss | ps | | ps | | | ps
| | bs | ks | | gs | ss | | rs |
| ls | ns | | gs | | | | ns | ls
| –
| Until ☗R-72
}}

Sleeve Rook makes its appearances in more modern professional games of Kunio Naito (内藤國雄), Manabu Senzaki (先崎学), Akira Watanabe(渡辺明), Keita Inoue (井上慶太), Masakazu Kondo (近藤正和) and others..

Kunio Naito, who was once s disciple of Sakata’s disciple ("grand-pupil" 孫弟子), has published in 1982 in Shogi Magazine 将棋マガジン a lecture about Sleeve Rook based on ''Sakata's Style''.<ref name=":0" /> Unlike Diag. 2 he suggested ☗B-77, that defends the rook pawn exchange, should be omitted. Instead one recommendation was from Diag.4 ☖P-44, ☗S-46 ☖G-43, ☗P-35 ☖Px, ☗Sx ☖S-33, ☗P*34 ☖S-24 (defensive tactic), but ☗Sx24 ☖Px, ☗S*35 ☖S*23, ☗B-79.

{{shogi diagram
|
| '''Diag. 4 - ☗B-77 omitted'''
| –
|lg|ng| | | |gg| |ng|lg
| |rg| |sg|gg|kg|sg|bg|
|pg| |pg|pg| |pg| |pg|pg
| | | | |pg| |pg| |
| |pg| | | | | | |
| | |ps|ps|ps| |ps| |
|ps|ps| |ss|ss|ps| |ps|ps
| |bs| | | | |rsl| |
|ls|ns| |gs|ks|gs| |ns|ls
| –
| Until ☗R-38
}}

Naito uses this strategy in his professional matches, like on 10th August 1971, 10-Dan Tournament Eliminations vs Kiyozumi Kiriyama (桐山清澄)<ref>[https://playshogi.com/#ViewKifu:37207:29 Kunio Naito vs Kiyozumi Kiriyama] (10 August 1971) from PlayShogi.com</ref> or 7th February 1975, NHK Cup Shogi Tournament vs Hifumi Kato (加藤一二三)<ref>[https://playshogi.com/#ViewKifu:38222:28 Hifumi Kato vs Kunio Naito] (7 February 1975) from PlayShogi.com</ref>.

==== On move 2. △P-74 Strategy ====
A very specific example of Sleeve Rook is [[Sente / Gote|Gote]]'s P-74. The line goes: P-74 P-34 P-26 P-74. A worth mentioning is next [[Sente / Gote|Sente]]'s move B-55 which seems to successfully pressure

==== Habu style Sleeve Rook ====

==== Against Swinging Rook ====

=== Sleeve Rook in Swinging Rook strategy ===

=== Other ===

==== Climbing King Sleeve Rook ====

= References =
<references />

Sitting King

2024-01-14T09:14:49Z

Shogi Harbour: new article

'''Sitting King''' (居玉 ''I-gyoku'') is a formation where a player keeps the king on its original square, without making a castle.

It is used in many rapid openings, where there is not enough time to make defenses or when the center is safer than the side. E.g. Don't put the king in Yagura playing against Yagura Destroyer formation.

Old proverb used to say "Sitting King is like a duck" (easy to be hunted). But in modern times this has been changing and in professional games we see more of this type of shogi. Especially in Bishop Exchange Opening.

Castle

2024-01-14T09:05:36Z

Shogi Harbour: added new castles, changed categories, added subcategories and other castles. corrected some names with + castle. Added sentence about sitting king.

In shogi, a '''castle''' (囲い ''kakoi'', literally "enclosure") is a defensive formation consisting of two to four connected generals that guard the king. There are a wide array of castles to choose from, and using a particular castle (or choosing not to castle) is a strategic decision that could make the difference between victory and defeat. The two main factors to consider are: the type of opening being played and the direction of the attack. In accordance with the proverb "Keep the king and rook separated", a player using a [[Swinging Rook]] strategy (where the rook moves to the left side of the board) will typically castle to the right, while a player using a [[Static Rook]] strategy (where the rook stays on the right side) will castle to the left. There are exceptions to this rule, as well as central castles. With the recent popularity of rapid attacks, it's not uncommon for even pro shogi players to forego castling entirely, using only a cursory defense as needed.

Position without a castle is called [[Sitting King]] and is used in recent modern openings like [[Bishop Exchange]].

= Swinging Rook Castles (Right-side Castles) =
These castles are typically employed by a Swinging Rook player. The Mino Castle and its variants are the most commonly employed against a Static Rook strategy, as they are strong on the sides but, in a Double Swinging Rook game, players may opt for a castle which can resist attacks from above, such as the Peerless Golds or Right Yagura. The most known castles are:

=== vs Static Rook openings ===
* Mino Castle
* High Mino
* Silver Crown
* Kimura Mino
* Half Mino
* Diamond Mino
* Swinging Rook Anaguma (Furi-Ana), 2-4 generals combinations
* Cozy Castle
* Other

=== in Double Swinging Rook openings ===
* Peerless Golds (old Twin Gold, Gold Excelsior)
* Right-side Anaguma
* Right-side Yagura
* Other

= Static Rook Castles (Left-side Castles) =
These castles are most commonly used by Static Rook players. Yagura is considered a very sturdy castle in a Double Static Rook game, but can be slow to construct. The Boat and elmo castles are quicker castles that allow for a rapid attack against a Swinging Rook strategy, but are not as solid as an Anaguma or Mino.

=== in Double Static Rook openings ===
* Crab Castle
* Yagura (Fortress) and its variations
* Gangi
* Other

=== vs Swinging Rook openings ===
* Boat Castle
* elmo Castle
* Static Rook Anaguma (Ibi-Ana)
* Leftside Mino
* Silver Crown
* Yonenaga's King
* Millenium Castle
* Other

= Central Castles =
While not very common due to the difficulty of needing to defend on both sides, some strategies keep the king and defending generals in the center of the board, allowing for a faster attack and guarding against drops within the camp. E.g. Side-Pawn Picker (Double Static) or Takada-Style (Double Ranging). Rarely used in Opposition shogi.

* Central House (Nakazumai)
* Nakahara's Castle (Nakahara's King)
* Duck
* Invincible Castle
* Other

= Others =
Handicaps use special castles like Silver Tandem and others.

Sleeve Rook

2024-01-13T20:09:59Z

Shogi Harbour: just added some names to research next time

Sleeve Rook

2024-01-13T19:47:32Z

Shogi Harbour: spaces between diagr. and diag. text

Sleeve Rook

2024-01-13T19:41:47Z

Shogi Harbour: horizontal diagrams

Sleeve Rook

2024-01-13T19:41:14Z

Shogi Harbour:

Sleeve Rook

2024-01-13T19:36:05Z

Shogi Harbour: additional infomation in the first paragraph, added diagrams

Sleeve Rook

2024-01-13T16:18:56Z

Shogi Harbour: added 2 references

'''Sleeve Rook''' (袖飛車 ''Sodebisha'') is an opening in shogi in which the rook is moved to the third file from the right from the perspective of the player.

It is generally known as part of [[Static Rook]] opening category but can be used in [[Swinging Rook]] as well.

The inventor of this strategy is said to be [[Sankichi Sakata]] (坂田三吉)<ref>[https://ja.wikipedia.org/w/index.php?title=%E8%A2%96%E9%A3%9B%E8%BB%8A&oldid=94858584 "袖飛車"] from Wikipedia: the free Encyclopedia, retrieved on 13 January 2024 15:58 (UTC)</ref>.

One example of Sakata's game can be a match played on 13 April 1913, Sankichi Sakata vs Kinjiro Sekine (関根金次郎)<ref>[https://playshogi.com/#ViewKifu:31322:21 Sankichi Sakata vs Kinjiro Sekine] (13 April 1913) from PlayShogi.com</ref>.

= Name Origin =
The name comes from the fact that the rook moves to one square to the left from the main position - like a sleeve is next to an arm.

== Classification ==

=== Against Static Rook ===

==== On move 2. △P-74 Strategy ====

==== Habu style Sleeve Rook ====

==== Against Swinging Rook ====

==== Sleeve Rook in Swinging Rook strategy ====

=== Other ===

==== Climbing King Sleeve Rook ====

= References =
<references />

Sleeve Rook

2024-01-13T16:01:00Z

Shogi Harbour: corrected the name

Main Page

2024-01-12T19:52:33Z

Shogi Harbour: changed link to shogi.pl

<strong>Welcome!</strong>

For a long time, shogi has been largely unknown outside of Japan. While there have been some attempts at bringing the game to the West, its popularity has only recently seen a resurgence. In the age of the Internet, more and more people are able to learn and play shogi. Unfortunately, its libraries have yet to reach other shores. With many books and articles untranslated, foreigners interested in the game have to put in quite an effort to learn much beyond the rules of the game.

But shogi has its history of players and trends, a history of masters trying to uncover the mysteries of the board, and it would be a shame to keep these brilliant discoveries locked behind a language barrier. Slowly but surely, pieces of these centuries of knowledge have been made available online, but many tales of shogi remain untranslated.

This wiki may be a start, but it is also a continuation. The start of a new project continues the efforts made by various people in the early years of the World Wide Web. Many people have made contributions to shogi popularization in the West and this site is another chapter in this effort. Where once we could only dream of having even basic information, we can now catch up to the strategies and stories of the present day.

This wiki is the collaborative effort of people who are enthusiastic about shogi, and we hope that many others can finally set anchor here, and find something to admire in the great tapestry of the game.

The Shogi Harbour wiki is an encyclopedic collection of shogi content and while there will be content for every most levels of proficiency the focus is on gameplay concepts and strategies and the professional shogi scene. Pages are updated to the best of what information we can gather, in the case of strategies and analysis this might mean the theory as stated on the page might not agree with current opinion. The corpora of sample games will include games outside professional games, e.g. online shogi servers.

== Other links ==
* [https://discord.gg/shogi-harbour-653255438904590372 Our Discord]
* [http://shogi.pl/ Main Page]

User:Shogi Harbour

2024-01-12T19:51:37Z

Shogi Harbour: Created page with "Ladies Professional Shogi Player 1 dan. [https://www.shogi.or.jp/player/lady/59.html JSA Karolina Fortin]"

Ladies Professional Shogi Player 1 dan.
[https://www.shogi.or.jp/player/lady/59.html JSA Karolina Fortin]

Uwate / Shitate

2024-01-12T19:48:27Z

Shogi Harbour: made the page

In handicap shogi games:

'''Uwate''' (上手 ''uwate'') - the player who is giving the handicap; playing with a certain disadvantage. In notation described with ☖ symbol (or ⛉ on diagrams).

'''Shitate''' (下手 ''shitate'') - the player who is receiving the handicap; playing with a certain advantage. In notation described with ☗ symbol (or ⛊ on reversed diagrams).

It is a rule that in exchange for giving the handicap, it is uwate who is making the first move. On shogi diagrams they still will be shown with ⛉ diagram with pieces on top of the board (reversed).

Sente / Gote

2024-01-12T19:41:42Z

Shogi Harbour: added kanji and alternative meanings

The two players of a shogi game are differentiated by who goes first in order of alternating turns:

'''Sente''' (先手 ''sente'') - player who makes the first move (sometimes called Black), in notation described with ☗ symbol (or ⛊ on reversed diagrams).

'''Gote''' (後手 ''gote'') - player who makes the second move (sometimes called White), in notation described with ☖ symbol (or ⛉ on diagrams).

Alternatively, word '''sente''' can be used to describe a move with an initiative or a move that requires opponent's answer. E.g. 先手を取る ''Sente wo toru'' = taking the initiative.

And '''gote''' can mean the opposite, a move without initiative or being forced to answer opponent's moves. E.g. 後手を引く ''Gote wo hiku'' = "taking a backseat".

For handicap games check [[Uwate / Shitate]].

Main Page

2024-01-12T11:25:25Z

Shogi Harbour: preface

Sente / Gote

2024-01-11T17:26:16Z

Shogi Harbour: made page

'''Sente''' - player who makes the first move (sometimes called Black), in notation described with ☗ symbol (or ⛊ on reversed diagrams).

'''Gote''' - player who makes the second move (sometimes called White), in notation described with ☖ symbol (or ⛉ on diagrams).

For handicap games check [[Uwate / Shitate]].

Sleeve Rook

2024-01-11T13:53:25Z

Shogi Harbour: linked kinkichi sakata

Sankichi Sakata

2024-01-11T13:52:53Z

Shogi Harbour: new article

Kinkichi Sakata (坂田三𠮷 or 阪田三𠮷, 1 July 1870 – 23 July 1946) was a professional shogi player. Posthumously awarded Meijin, Oushou.

= Read more =
Kinkichi Sakata on Japanese Wikipedia: [https://ja.wikipedia.org/wiki/%E5%9D%82%E7%94%B0%E4%B8%89%E5%90%89 坂田三吉]

Sleeve Rook

2024-01-11T13:37:20Z

Shogi Harbour: Added headers

Sleeve Rook

2024-01-11T11:35:14Z

Shogi Harbour: Added page about Sleeve Rook