Right Fourth File Rook
{{Short description|Shogi opening}}
{{shogi diagram
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| Right Fourth File Rook formation
| –
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| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | ss | ps | ps | ps | ps
| | | | ps | ps | | ns | |
| | | | | | rs | | |
| | | | | | | | | ls
| –
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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.
{{Expand Japanese|date=December 2016}}
Fortress vs Right Fourth File Rook
{{main |Fortress vs Right Fourth File Rook}}
Right Fourth File Rook vs Fourth File Rook
{{shogi diagram
| floatright
| Static Rook vs Fourth File Rook
| –
| lg | ng | sg | gg | kg | gg | sg | ng | ls
| | | | | | rgl| | bg |
| pg | pg | pg | pg | pg | | | pg | pg
| | | | | | pg | pg | |
| | | | | | | | |
| | | ps | | | | | ps |
| ps | ps | | ps | ps | ps | ps | | ps
| | bs | | | | ss | | rs |
| ls | ns | ss | gs | ks | gs | | ns | ls
| –
| first six moves
}}
{{Expand section|date=November 2016}}
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.{{sfn | 杉本 | 2003 | p=223 ff}}
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.)
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{{shogi diagram
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| vs Fourth File Rook
| –
| lg | ng | sg | gg | kg | gg | sg | ng | ls
| | | | | | rg | | bg |
| pg | pg | pg | pg | pg | | | pg | pg
| | | | | | pg | pg | |
| | | | | | | | |
| | | ps | | | psl| | ps |
| ps | ps | | ps | ps | uah| ps | | ps
| | bs | | | | ss | | rs |
| ls | ns | ss | gs | ks | gs | | ns | ls
| –
|
}}
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{{shogi diagram
|
| vs Fourth File Rook
| –
| lg | ng | sg | gg | kg | gg | dah| ng | ls
| | | | | | rg | sg | bg |
| pg | pg | pg | pg | pg | | | pg | pg
| | | | | | pg | pg | |
| | | | | | | | |
| | | ps | | | ps | | ps |
| ps | ps | | ps | ps | ssl| ps | | ps
| | bs | | | | uah| | rs |
| ls | ns | ss | gs | ks | gs | | ns | ls
| –
|
}}
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4. P-46. The Right Fourth File Rook opening starts by advancing Black's fourth file pawn.{{efn | For comparison, in typical [non-Right Fourth File Rook] Static Rook position, Black advances their central file pawn [that is, P-56] instead of the fourth file pawn.}}
This allows an opening for the left silver to pass through the front line of pawns.
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{{shogi diagram
| floatright
| vs Fourth File Rook
| –
| lg | ng | sg | gg | kg | gg | | ng | ls
| | | | | | rg |ddlh| bg |
| pg | pg | pg | pg | pg | sg | | pg | pg
| | | | | | pg | pg | |
| | | | | | | | |
| | | ps | | ssl| ps | | ps |
| ps | ps | | ps | ps |dulh| ps | | ps
| | bs | | | | | | rs |
| ls | ns | ss | gs | ks | gs | ss | ns | ls
| –
|
}}
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{{shogi diagram
|
| vs Fourth File Rook
| –
| lg | ng | sg | gg |ddlh| gg | | ng | ls
| | | | kgl| | rg | | bg |
| pg | pg | pg | pg | pg | sg | | pg | pg
| | | | | | pg | pg | |
| | | | | | | | |
| | | ps | | ss | ps | | ps |
| ps | ps | | ps | ps | | ps | | ps
| | bs | | | | | | rs |
| ls | ns | ss | gs | ks | gs | | ns | ls
| –
|
}}
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{{Col-2}}
{{shogi diagram
|
| vs Fourth File Rook
| –
| lg | ng | sg | gg | | gg | | ng | ls
| | | | kg | | rg | | bg |
| pg | pg | pg | pg | pg | sg | | pg | pg
| | | | | | pg | pg | |
| | | | | | | | |
| | | ps | | ss | ps | | ps |
| ps | ps | | ps | ps | | ps | | ps
| | bs | | | | rsl| lat| las|
| ls | ns | ss | gs | ks | gs | | ns | ls
| –
|
}}
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{{shogi diagram
|
| vs Fourth File Rook
| –
| lg | ng | sg | gg | | gg | | ng | ls
| | kg | lat| las| | rg | | bg |
| pg | pg | pg | pg | pg | sg | | pg | pg
| | | | | | pg | pg | |
| | | | | | | | |
| | | ps | | ss | ps | | ps |
| ps | ps | | ps | ps | | ps | | ps
| | bs | ksl| | | rs | | |
| ls | ns | ss | gs |daaus| gs | | ns | ls
| –
|
}}
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{{shogi diagram
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| vs Fourth File Rook
| –
| lg | ng | sg | gg | | gg | | ng | ls
| | kg | | | | rg | | bg |
| dah| pg | pg | pg | pg | sg | | pg | pg
| pgl| | | | | pg | pg | |
| | | | | | | | |
| ps | | ps | | ss | ps | | ps |
| uah| ps | | ps | ps | | ps | | ps
| | bs | ks | | | rs | | |
| ls | ns | ss | gs | | gs | | ns | ls
| –
|
}}
{{Col-2}}
{{shogi diagram
|
| vs Fourth File Rook
| –
| lg | ng | dah| gg | |ddlh| | ng | ls
| | kg | sg | | gg | rg | |ddlh|
| | pg | pg | pg | dah| sg | bg | pg | pg
| pg | | | | pgl| pg | pg | |
| | | | | | | | |
| ps | | ps | | ss | ps | ps | ps |
| | ps | | ps | ps | | ns | kal| ps
| | bs | ks | | gs | rs | | uda|
| ls | ns | ss | gs | |dulh| | uas| ls
| –
|
}}
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{{shogi diagram
|
| vs Fourth File Rook
| –
| lg | ng | | gg | | | | ng | ls
| | kg | sg | | gg | rg | | |
| | pg | pg | | | sg | bg | pg | pg
| pg | | | pg | pg | pg | pg | |
| | | | | | | | nsl|
| ps | | ps | | ss | ps | ps | ps | ps
| | ps | | ps | ps | | | |
| | bs | ks | | gs | rs | | |
| ls | ns | ss | gs | | | | | ls
| –
|
}}
{{Col-2}}
{{shogi diagram
|
| vs Fourth File Rook
| 銀 歩
| lg | ng | | gg | | | | ng | ls
| | kg | sg | | gg | rg | | |
| | pg | pg | | | | | pg | pg
| pg | | | pg | | ps | pg | |
| | | | bg | pg | | | pgl|
| ps | | ps | | | rs | ps | ps | ps
| | ps | | ps | ps | | | | ps
| | bs | ks | | gs | | | |
| ls | ns | ss | gs | | | | | ls
| 角 銀 歩
|
}}
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{{clear}}
=White's silver-54 variation=
{{Expand section|date=January 2017}}
See also
Notes
{{notelist}}
References
{{Reflist|30em}}
Bibliography
- {{cite book | last=杉本 | first=昌隆 | title=杉本流四間飛車の定跡 | year=2003 | publisher=創元社 | isbn=4422750895}}
- {{cite book | last=Kitao | first=Madoka | author-link=Madoka Kitao | title=Joseki at a glance | year=2011 | publisher=Nekomado | translator-last=Kawasaki | translator-first=Tomohide | isbn=978-4-9052-2501-0}}
External links
- Global Shogi: [http://shogiglobal.blogspot.gr/2017/04/right-4th-file-rook-migi-shikenbisha.html Right 4th File Rook (Migi Shikenbisha-右四間飛車)]
{{Shogi openings}}