Fourth File Rook#Leghorn Special

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| Ōhashi vs Hon'inbō 1607

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| lg | ng | sg | gg | kg | gg | | ng | ls

| | | | | | rgl| | bg |

| pg | pg | pg | pg | pg | sg | | pg | pg

| | | | | | pg | pg | |

| | | | | | | | |

| | | ps | | | ps | ps | |

| ps | ps | | ps | ps | ss | | ps | ps

| | bs | | | | rs | | |

| ls | ns | ss | gs | ks | gs | | ns | ls

| –

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}}

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{{shogi diagram

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| Ōhashi vs Hon'inbō 1607

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| lg | ng | | gg | | gg | | ng | ls

| | | kg | sg | | rg | | |

| pg | pg | pg | pg | | sg | bg | pg | pg

| | | | | pg | pg | pg | |

| | | | | | | | |

| | | ps | | psl| ps | ps | ps | ps

| ps | ps | | ps | | ss | | |

| | bs | ks | | gs | rs | | |

| ls | ns | ss | gs | | | | ns | ls

| –

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{{Expand section|date=November 2016}}

The earliest recorded shogi game was a Static Rook vs. Fourth File Rook game from 1607. Black was {{Interlanguage link multi | Sōkei Ōhashi I|ja| 3=大橋宗桂 (初代) | vertical-align=sup}} who played a Right Fourth File Rook position (Static Rook) against Sansa Hon'inbō's Fourth File Rook. Ōhashi won the game.

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{{shogi diagram

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| First 4 moves

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| lg | ng | sg | gg | kg | gg | sg | ng | ls

| | rg | | | | | | bg |

| pg | pg | pg | pg | pg | | | pg | pg

| | | | | | pgl| pg | |

| | | | | | | | |

| | | ps | | | | | ps |

| ps | ps | | ps | ps | ps | ps | | ps

| | bs | | | | | | rs |

| ls | ns | ss | gs | ks | gs | ss | ns | ls

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The opening starts by the usual 4-move sequence that characterizes Static Rook vs Ranging Rook games as shown in the first adjacent board position. (See: Normal Ranging Rook.)

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{{Main | Fujii System}}

The Fujii System is a set of Fourth File Rook strategies used against various Static Rook strategies (mainly Left Mino and Bear-in-the-hole Static Rook).

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| Left Silver-57 Rapid Attack

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| | | | | | | | ps |

| ps | | ps | | ps | | ps | |

| | ps | | ps | ss | ps | | | ps

| | bs | ks | gs | gs | ss | | rs |

| ls | ns | | | | | | ns | ls

| –

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{{Main | Left Silver-57 Rapid Attack}}

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{{Main | Tateishi Fourth File Rook}}

A Fourth File Rook opening created by amateur player Katsuki Tateishi, which awarded him the prestigious Kōzō Masuda Award in 2004.

{{Expand section|date=March 2018}}

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| Bear-in-the-hole Fourth File Rook

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| | | | ps | | | | |

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| ps | ps | ps | | ps | ps | ps | ps | ps

| | bs | ss | rs | | | gs | ss | ls

| ls | ns | | | | | gs | ns | ks

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{{Main |Bear-in-the-hole Fourth File Rook}}

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| King's Head Silver

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| lg | ng | | | | gg | | ng | lg

| | rg | | sg | gg | | kg | bg |

| | | | pg | sg | pg | | pg |

| pg | | pg | | pg | | pg | | pg

| | pg | | | | ss | | |

| ps | | ps | ps | | | | | ps

| | ps | bs | | ps | ps | ps | ps |

| | | | rs | | | ss | ks |

| ls | ns | | gs | | gs | | ns | ls

| –

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{{Main | King's Head Silver}}

King's Head Silver (玉頭銀) is a Fourth File Rook opening characterized by the left silver moving to 56, 45, and then to 34. There are versions for both quick fights and slow games.

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{{shogi diagram

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| King's Head Vanguard Pawn

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| | | | | | | | |

| | | ps | | | | | ps |

| | | ss | ps | ps | | | |

| ps | ps | | gs | ss | ps | ps | | ps

| | bs | ks | gs | | | | rs |

| ls | ns | | | | | | ns | ls

| –

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{{Main | King's Head Vanguard Pawn}}

Fourth File Rook against Black's King's Head Vanguard Pawn (玉頭位取り gyokutou kuraidori).

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| Iijima Bishop Pullback

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| | | | | | | | ps |

| ps | | | | ps | | | |

| | ps | ps | ps | bs | ps | ps | | ps

| | ks | ss | | gs | ss | | rs |

| ls | ns | | gs | | | | ns | ls

| –

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{{Main | Iijima Bishop Pullback}}

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{{Main | Bishop Exchange Fourth File Rook}}

The Bishop-Exchange Fourth File is a Fourth File Rook opening in which the player's bishop diagonal remains open allowing for a bishop exchange to occur early in the opening.

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| The Leghorn Special

| 角

| lg | ng | sg | gg | | gg | sg | ng | lg

| | | | kg | | rg | | dads |

| pg | pg | pg | pg | pg | pg | da | pg | pg

| | | | | | da | pg | |

| | | | | da | | | |

| | | ps | da | | | | ps |

| ps | ps | dad | ps | ps | ps | ps | | ps

| | hgl | | ks | | | ss | rs |

| ls | ns | ss | gs | | gs | | ns | ls

| –

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{{Main | Leghorn Special}}

The Leghorn Special (白色レグホン・スペシャル hakushoku reguhon supesharu or, most commonly, the abbreviation レグスペ regusupe) is an opening in which you build up a Bear-in-the-hole castle while you're simultaneously defending against an opponent's Bear-in-the-hole. It is a Bear-in-the-hole Bishop Exchange Fourth File Rook variation and is also famous as an opening to discourage Black from building of a Bear-in-the-hole. The name is said to have originated in the resemblance of this opening to the behavior of a white leghorn chicken that keeps attacking when surrounded by Bear-in-the-hole.{{citationneeded|date=March 2018}}

The leghorn special consists mainly in castling the king in Bear-in-the-hole once the bishops have been exchanged in Fourth File Rook. It requires that the opponent is playing Static Rook, and that you're playing White. Following Black's K-68, White would go for the bishop exchange (Bx88), which leads to Black's Sx88, hence reducing the escape routes of Black's king and interfering with Black's castle formation. So, the Leghorn Special prevents (or at least slows down) Black's Bear-in-the-hole, while White can devote to building its own Bear-in-the-hole without problem.

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{{Expand section|date=March 2018}}

Fourth File Rook positions are not often used in Double Ranging Rook games in professional play. When they are used, the positions often transition to Opposing Rook positions.

• Left Silver-5g Rapid Attack
• Fujii System
• Right Fourth File Rook vs Fourth File Rook
• Bishop Exchange Fourth File Rook
• Tateishi Fourth File Rook
• Ranging Rook

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{{Reflist|30em}}

• {{cite book | last=Aono | first=Teruichi | author-link=Teruichi Aono | script-title=ja:将棋定跡のカギ: 和英 定跡問題集 | title=Guide to shogi openings: Unlock the secrets of joseki | year=1983 | publisher=山海堂 | translator-last=Fairbairn | translator-first=John | isbn=4-381-00598-8}}
• {{cite journal | last=Fairbairn | first=John | date=1979 | title=The fourth file rook part 1 | journal=Shogi | issue=22 | pages=10–13 }}
• {{cite journal | last=Fairbairn | first=John | date=1980 | title=The fourth file rook part 2 | journal=Shogi | issue=23 | pages=9–11 }}
• {{cite book | last=Hosking | first=Tony | title=The art of shogi | year=1996 | publisher=The Shogi Foundation | isbn=978-0-95310-890-9}}
• {{cite journal | last=Kiriyama | first=Kiyozumi | author-link=:Kiyozumi Kiriyama | date=1980 | title=The counter fourth-file rook opening (centre-vanguard-pawn) | journal=Shogi | issue=24 | pages=6–9 | translator-last=Fairbairn | translator-first=John }}
• {{cite book | last=Kitao | first=Madoka | title=Joseki at a glance | year=2011 | author-link=Madoka Kitao | publisher=Nekomado | translator-last=Kawasaki | translator-first=Tomohide | isbn=978-4-9052-2501-0}}
• {{cite book | last=Kitao | first=Madoka | title=Sabaki at a glance | year=2013 | publisher=Nekomado | translator-last=Kawasaki | translator-first=Tomohide | isbn=978-4-9052-2510-2}}
• {{cite journal | last=Ōuchi | first=Nobuyuki | author-link=Nobuyuki Ōuchi | date=1978 | title=Opening series: How to play the anaguma part 1 | journal=Shogi | issue=12 | pages=13–15 | translator-last=Fairbairn | translator-first=John }}
• {{cite journal | last=Ōuchi | first=Nobuyuki | date=1978 | title=Opening series: How to play the anaguma part 2 | journal=Shogi | issue=13 | pages=13–15 | translator-last=Fairbairn | translator-first=John }}
• {{cite journal | last=Ōuchi | first=Nobuyuki | date=1978 | title=Opening series: How to play the anaguma part 3 | journal=Shogi | issue=14 | pages=12–13 | translator-last=Fairbairn | translator-first=John }}
• {{cite journal | last=Ōuchi | first=Nobuyuki | date=1978 | title=Opening series: How to play the anaguma part 4 | journal=Shogi | issue=15 | page=2 | translator-last=Fairbairn | translator-first=John }}
• {{cite book | last=Yebisu | first=Miles | year=2016 | title=Comprehensive shogi guide in English: How to play Japanese chess | publisher=Laboratory Publishing}}

• [http://www.shogi.net/nexus/ukekata/part3.html How to Defend in Shogi: Basic Formation 3: Shikenbisha]
• YouTube: HIDETCHI's Shogi Openings:
• [https://www.youtube.com/watch?v=oxZweFiymLA S6-5g Rapid Attack (against 4th-file Mino Defense)]
• [https://www.youtube.com/watch?v=BImZKizTPLI Left S-4f Strategy #1]
• [https://www.youtube.com/watch?v=Th_y4qm6vro Left S-4f Strategy #2]
• [https://www.youtube.com/watch?v=nOdcXbeLQRI Left S-4f Strategy #3]
• [https://www.youtube.com/watch?v=Q9VPTj8Ll9k Left S-4f Strategy #4 (P*3f variation)]
• [https://www.youtube.com/watch?v=BZy8rCgsOCI Left S-4f Strategy #5 (P*3g variation)]
• [https://www.youtube.com/watch?v=awCz9quOZeI Left S-4f Strategy #6 (B-2b variation)]
• [https://www.youtube.com/watch?v=YgPMIPdO6Co P-4e Rapid Engage #1]
• [https://www.youtube.com/watch?v=uZ1l_Na1yb4 P-4e Rapid Engage #2]
• [https://www.youtube.com/watch?v=_UWl2-fh76g P-4e Rapid Engage #3]
• Shogi Shack:
• [http://www.shogishack.net/pages/firstmove/first-move-example1.html The First Example: Ibisya And Furibishya]
• [http://www.shogishack.net/pages/shogi-strategies/opening-showcase/fourth-file-rook.html Fourth File Ranging Rook]
• [http://www.shogishack.net/pages/study-room/shogi-openings/playnig-against-right-fourth.html Playing Fourth Rile Rook Against Right Fourth Ranging Rook]
• Shogi Opening: [http://www44.atpages.jp/~studyshogi/opening/4th-file-rook/AkutsuRapidAttack.html 4th File Rook vs Akutsu Semi Rapid Attack]
• Yet Another Shogi Site: [http://dota2kupo.byethost32.com/openings/fourth/basics.php Basics of Gote Fourth File Rook]

Category:Shogi openings

Category:Ranging Rook openings

Category:Fourth File Rook openings

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