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{{Short description|Shogi opening}}
{{shogidiagram
{{shogi diagram
| tright
| tright
| '''Floating Rook'''<br />position after 11 moves
| '''Floating Rook'''<br />position after 11 moves
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| ls | ns | ss | | ks | gs | ss | ns | ls
| ls | ns | ss | | ks | gs | ss | ns | ls
| 歩
| 歩
| 6. R-26
|
{{(!}} cellpadding{{=}}0 style{{=}}"margin-left: auto; margin-right: auto; border-collapse: collapse; border: none;"
{{!}}-
{{!}}style{{=}}"padding-right: 4px;"{{!}} 6. {{!}}{{!}} R-2f {{!}}{{!}}style{{=}}"padding-left: 8px;"{{!}} ...
{{!)}}
}}
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In [[shogi]], '''Floating Rook''' (浮き飛車 ''ukibisha'') is a variant of the [[Double Wing Attack]] (相掛かり ''aigakari'') [[Shogi opening|opening and joseki]] in which Black's rook (飛) falls back to the f rank (R-2f) aiming to protect this rank and prevent White from exchanging pawns (歩) on the eighth file to get a pawn in hand.
In [[shogi]], '''Floating Rook''' (浮き飛車 ''ukibisha'') is a variation of the [[Double Wing Attack]] (相掛かり ''aigakari'') [[Shogi opening|opening]] in which Black's rook falls back to rank 6 (R-26) aiming to protect this rank and prevent White from exchanging pawns on the eighth file to get a pawn in hand.

The translated term ''floating'' is synonymous with the term ''[[Glossary of chess#Hanging|hanging]]'' as in ''hanging piece'' used in [[western chess]] where ''floating'' means a piece that is not defended by another piece.


From this position, there are numerous subvariants.
From this position, there are numerous subvariants.
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{{Expand section|date=May 2016}}
{{Expand section|date=May 2016}}


'''6. R-2f.''' Floating Rook.
'''6. R-26.''' Floating Rook.
{{clear}}
{{clear}}


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{{shogi diagram
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|
|
| '''Silver-7b option'''<br />move 12
| '''Silver-72 option'''<br />move 12
| –
| –
| lg | ng | dah| gg | kg | | sg | ng | lg
| lg | ng | dah| gg | kg | | sg | ng | lg
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}}
}}
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{{shogi diagram
{{shogidiagram
|
|
| '''Silver-6b option'''<br />move 12
| '''Silver-62 option'''<br />move 12
| –
| –
| lg | ng |ddrh| gg | kg | | sg | ng | lg
| lg | ng |ddrh| gg | kg | | sg | ng | lg
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'''6. ... 7b''' or '''6. ... 6b.''' White has two options regarding their right silver: it could advance either to the seventh file or the sixth file.{{sfn | Hosking | 1997 | loc=Part II, Chapter 2: Floating rook (ukibisha): Introduction | p=105}}{{sfn | Hosking | 1997 | loc=Part II, Chapter 2: Floating rook: Section 5: Tsukada Special | p=117–122}} The seventh file (7b) option is more common and has become the standard move in Double Wing Attack while the sixth file option is an older move according to professional player Kiyokazu Katsumata (勝又清和).{{sfn|Katsumata|1995|loc=[http://www.shogi.net/quest/q4-aigakari-2.txt ("Tsukata Special: Wondrous new discovery")]}}
'''6. ...72''' or '''6. ...62.''' White has two options regarding their right silver: it could advance either to the seventh file or the sixth file.{{sfn | Hosking | 1996 | loc=Part II, Chapter 2: Floating rook (ukibisha): Introduction | p=105}}{{sfn | Hosking | 1996 | loc=Part II, Chapter 2: Floating rook: Section 5: Tsukada Special | p=117–122}} The seventh file (S-72) option is more common and has become the standard move in Double Wing Attack while the sixth file option is an older move according to professional player Kiyokazu Katsumata (勝又清和).{{sfn|Quest of the Lost Systems|1995|loc=[http://www.shogi.net/quest/q4-aigakari-2.txt ("Tsukata Special: Wondrous new discovery")]}}


'''''6. ... 7b.''''' Moving the silver up to the seventh file allows White the following possibilities:
'''''6. ...72.''''' Moving the silver up to the seventh file allows White the following possibilities:


: (i) to play a faster [[Climbing Silver]] advancing directly through the eighth file
: (i) to play a faster [[Climbing Silver]] advancing directly through the eighth file
: (ii) to keep an opening for the king to escape (if necessary) through a K-6b – K-7a path
: (ii) to keep an opening for the king to escape (if necessary) through a K-62 – K-72 path
: (iii) allows the silver to protect the 8c square from Black's pawn drop on 8c or dangling pawn drop on 8d should White's rook move off of the eighth file
: (iii) allows the silver to protect the 83 square from Black's pawn drop on 83 or dangling pawn drop on 84 should White's rook move off of the eighth file
: (iv) prevent Black's rook from capturing the silver (if moved instead to 6. ... 6b) in a [[Tsukada Special]] type of attack
: (iv) prevent Black's rook from capturing the silver (if moved instead to 6. ...62) in a [[Tsukada Special]] type of attack


However, this gives up defending 5c with the silver and moving to the central file via that square.
However, this gives up defending 53 with the silver and moving to the central file via that square.


'''''6. ... 6b.''''' Moving the silver to the sixth file allows White the following possibilities:
'''''6. ...62.''''' Moving the silver to the sixth file allows White the following possibilities:


: (i) to immediately protect the pawn resting on 5c
: (i) to immediately protect the pawn resting on 53
: (ii) to eventually move their silver to the 5c square
: (ii) to eventually move their silver to the 53 square


However, the silver on 6b and the gold on 6a may form a wall blocking the king from escaping toward the right side of White's board if under attack. White can still attempt a Climbing Silver strategy although it will be a slower Oblique Climbing Silver strategy since White must move a pawn out of the way first.
However, the silver on 62 and the gold on 61 may form a wall blocking the king from escaping toward the right side of White's board if under attack. White can still attempt a Climbing Silver strategy although it will be a slower Oblique Climbing Silver strategy since White must move a pawn out of the way first.


Both moves allow for a Reclining Silver positioning of the silver on 5d.
Both moves allow for a Reclining Silver positioning of the silver on 54.


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|
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| '''Floating Rook'''<br />up move 14
| '''Floating Rook'''<br />up move 14
Line 105: Line 104:
| 歩
| 歩
|
|
7. P-1f &nbsp; P-1d
7. P-16 &nbsp; P-14
}}
}}
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{{shogi diagram
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|
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| '''Floating Rook'''<br />move 16
| '''Floating Rook'''<br />move 16
Line 123: Line 122:
| 歩
| 歩
|
|
8. S-3h &nbsp; P-6d
8. S-38 &nbsp; P-64
}}
}}
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| '''Floating Rook'''<br />move 17
| '''Floating Rook'''<br />move 17
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| 歩
| 歩
|
|
9. P-7f &nbsp; ...
9. P-76
}}
}}
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|
|
| '''Floating Rook'''<br />move 18
| '''Floating Rook'''<br />move 18
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| 歩
| 歩
|
|
9. ... &nbsp; P-8f
9. ...P-86
}}
}}
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|
| '''Floating Rook'''<br />move 20
| '''Floating Rook'''<br />move 20
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| 歩歩
| 歩歩
|
|
10. Px8f &nbsp; Rx8f
10. Px86 &nbsp; Rx86
}}
}}
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{{shogi diagram
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|
|
| '''Floating Rook'''<br />move 22
| '''Floating Rook'''<br />move 22
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| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 11. P*8g &nbsp; R-8d
| 11. P*87 &nbsp; R-84
}}
}}
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{{Col-end}}
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===Sickle and Chain Silver===
===Sickle and Chain Silver===


{{Expand section}}
{{Expand section|date=December 2016}}


'''Sickle and Chain Silver''' or '''Chained Sickle Silver''' (鎖鎌銀 or くさり鎌銀 ''kusari gama gin'')
'''Sickle and Chain Silver''' or '''Chained Sickle Silver''' (鎖鎌銀 or くさり鎌銀 ''kusari gama gin'')
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{{shogi diagram
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|
|
| '''Reclining Silver'''<br />until move 23
| '''Reclining Silver'''<br />until move 23
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| 歩
| 歩
|
|
12. P-4f &nbsp; ... <br />
12. P-46 <br />
&nbsp;
&nbsp;
}}
}}
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{{shogi diagram
{{shogidiagram
|
|
| '''Reclining Silver'''<br />until move 25
| '''Reclining Silver'''<br />until move 25
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| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 12. ... &nbsp; S-6c <br />
| 12. ...S-63 <br />
13. S-4g &nbsp; ...
13. S-47
}}
}}
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{{Col-end}}
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{{Expand section|date=November 2016}}
{{Expand section|date=November 2016}}


In order to play ('''Double''' or '''Mutual''') '''Reclining Silver''' or '''Sitting Silver''', Black must advance their right silver to the 5f square through 4g while White advances their silver to 5d through 6c.{{sfn | Aono | 1983 | loc=Wing Attack, Reclining Silver | p=51–100}}{{sfn | Hosking | 1997 | loc=Floating Rook section 1: Clanging Silvers & section 2: versus Centre Vanguard Pawn | p=108–112}}
In order to play ('''Double''' or '''Mutual''') '''Reclining Silver''' or '''Sitting Silver''', Black must advance their right silver to the 56 square through 47 while White advances their silver to 54 through 63.{{sfn | Aono | 1983 | loc=Wing Attack, Reclining Silver | p=51–100}}{{sfn | Hosking | 1996 | loc=Floating Rook section 1: Clanging Silvers & section 2: versus Centre Vanguard Pawn | p=108–112}}


Since a pawn is blocking the path of the silver, it must be pushed forward first. White usually makes this pawn push (on the sixth file) earlier than Black's pawn push on the fourth file.
Since a pawn is blocking the path of the silver, it must be pushed forward first. White usually makes this pawn push (on the sixth file) earlier than Black's pawn push on the fourth file.
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|
|
| '''Reclining Silver'''<br />until move 26
| '''Reclining Silver'''<br />until move 26
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| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 13. ... &nbsp; P-3d
| 13. ...P-34
}}
}}
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{{shogi diagram
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|
|
| '''Reclining Silver'''<br />until move 28
| '''Reclining Silver'''<br />until move 28
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| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 14. S-5f &nbsp; S-5d
| 14. S-56 &nbsp; S-54
}}
}}
{{Col-end}}
{{Col-end}}


'''13. ... P-3d.''' White activates their bishop by opening the bishop diagonal. It's possible that opening the diagonal could have been done sooner before moving the silvers and edge pawns.
'''13. ...P-34.''' White activates their bishop by opening the bishop diagonal. It's possible that opening the diagonal could have been done sooner before moving the silvers and edge pawns.
{{clear}}
{{clear}}


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{{Expand section|date=December 2016}}
{{Expand section|date=December 2016}}


'''Clanging Silvers''' (ガッチャン銀 ''gatchan gin'')
'''[[Clanging Silvers]]''' (ガッチャン銀 ''gatchan gin'')


===Nakahara Floating Rook===
===Nakahara Floating Rook===
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|
| '''Nakahara'''<br />until move 23
| '''Nakahara'''<br />until move 23
Line 328: Line 327:
| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 12. P-3f &nbsp; ...
| 12. P-36
}}
}}
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{{shogi diagram
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|
|
| '''Nakahara'''<br />until move 24
| '''Nakahara'''<br />until move 24
Line 345: Line 344:
| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 12. ... &nbsp; P-3d
| 12. ...P-34
}}
}}
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{{Col-end}}
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'''Nakahara Double Wing Attack''' (中原流相掛かり ''nakahara-ryū aigakari'') is a Floating Rook variant has Black advancing the third file pawn.
'''Nakahara Double Wing Attack''' (中原流相掛かり ''nakahara-ryū aigakari'') is a Floating Rook variant has Black advancing the third file pawn.


This allows a space on the 3g square for either the silver or the knight to move to.
This allows a space on the 37 square for either the silver or the knight to move to.


White responds by activating their bishop.
White responds by activating their bishop.

These strategies are named after [[Makoto Nakahara]].

{{clear}}
{{clear}}


====Silver-3g Nakahara====
====Nakahara Silver-37====


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|
|
| '''Nakahara Silver-3g'''<br />until move 25
| '''Nakahara Silver-37'''<br />until move 25
| 歩
| 歩
| lg | ng | | gg | kg | | sg | ng | lg
| lg | ng | | gg | kg | | sg | ng | lg
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| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 13. S-3g &nbsp; ...
| 13. S-37
}}
}}
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{{shogi diagram
{{shogidiagram
|
|
| '''Nakahara Silver-3g'''<br />until move 26
| '''Nakahara Silver-37'''<br />until move 26
| 歩
| 歩
| lg | ng | | gg | kg | | sg | ng | lg
| lg | ng | | gg | kg | | sg | ng | lg
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| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 13. ... &nbsp; S-6g
| 13. ...S-63
}}
}}
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{{shogi diagram
{{shogidiagram
|
|
| '''Nakahara Silver-3g'''<br />until move 27
| '''Nakahara Silver-37'''<br />until move 27
| 歩
| 歩
| lg | ng | | gg | kg | | sg | ng | lg
| lg | ng | | gg | kg | | sg | ng | lg
Line 413: Line 415:
| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 14. P-3e &nbsp; ... <br />
| 14. P-35 <br />
&nbsp;
&nbsp;
}}
}}
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{{shogi diagram
{{shogidiagram
|
|
| '''Nakahara Silver-3g'''<br />until move 29
| '''Nakahara Silver-37'''<br />until move 29
| 歩歩
| 歩歩
| lg | ng | | gg | kg | | sg | ng | lg
| lg | ng | | gg | kg | | sg | ng | lg
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| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 14. ... &nbsp; Px3e <br />
| 14. ...Px35 <br />
15. S-4f &nbsp;
15. S-46
}}
}}
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{{Col-end}}


{{shogi diagram
{{shogidiagram
| floatright
| floatright
| '''Nakahara Silver-3g'''<br />until move 30
| '''Nakahara Silver-37'''<br />until move 30
| 歩歩
| 歩歩
| lg | ng | |ddrh| kg | | sg | ng | lg
| lg | ng | |ddrh| kg | | sg | ng | lg
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| ls | ns | ss | | ks | gs | | ns | ls
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 歩
| 15. ... &nbsp; G-5b
| 15. ...G-52
}}
}}


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{{clear}}
{{clear}}


====Knight-3g Nakahara====
====Nakahara Knight-37====


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{{shogi diagram
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|
|
| '''Nakahara Knight-3g'''<br />until move 25
| '''Nakahara Knight-37'''<br />until move 25
| 歩
| 歩
| lg | ng | | gg | kg | | sg | ng | lg
| lg | ng | | gg | kg | | sg | ng | lg
Line 480: Line 482:
| ls | ns | ss | | ks | gs | | uas| ls
| ls | ns | ss | | ks | gs | | uas| ls
| 歩
| 歩
| 13. N-3g &nbsp; ...
| 13. N-37
}}
}}
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{{shogi diagram
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|
|
| '''Nakahara Knight-3g'''<br />until move 26
| '''Nakahara Knight-37'''<br />until move 26
| 歩
| 歩
| lg | ng | | gg |ddrh| | sg | ng | lg
| lg | ng | | gg |ddrh| | sg | ng | lg
Line 497: Line 499:
| ls | ns | ss | | ks | gs | | | ls
| ls | ns | ss | | ks | gs | | | ls
| 歩
| 歩
| 13. ... &nbsp; K-4b
| 13. ...K-42
}}
}}
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{{Expand section|date=November 2016}}
{{Expand section|date=November 2016}}


Nakahara's knight variant moves the knight to 3g instead of the silver.
Nakahara's knight variant moves the knight to 37 instead of the silver.
{{clear}}
{{clear}}


===Tsukada Special===
===Tsukada Special===


{{shogi diagram
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| tright
| tright
| '''Tsukada Special'''
| '''Tsukada Special'''
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| '''Rook on Pawn'''<br />until move 15
| '''Rook on Pawn'''<br />until move 15
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| ls | ns | ss | | ks | gs | ss | ns | ls
| ls | ns | ss | | ks | gs | ss | ns | ls
| 歩
| 歩
| 8. R-3f &nbsp; ...
| 8. R-36
}}
}}
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{{shogi diagram
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|
|
| '''Cat's Rook on Pawn'''<br />until move 15
| '''Cat's Rook on Pawn'''<br />until move 15
Line 565: Line 567:
| ls | ns | ss | | ks | gs | ss | ns | ls
| ls | ns | ss | | ks | gs | ss | ns | ls
| 歩
| 歩
| 8. R-3f &nbsp; ...
| 8. R-36
}}
}}
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{{Col-end}}


{{main article | Rook on Pawn}}
'''Rook on Pawn''' (タテ歩取り or 縦歩取り ''tatefudori'') is a subclass of Floating Rook openings in which the Floating Rook player moves their rook to the third file aiming to capture their opponent's pawn used to open their bishop diagonal at the 3d square.{{sfn | Fairbairn | 1986 | loc=Chapter 10: Opening patterns | p=64–65}}{{sfn | Hosking | 1997 | loc=Part II, Chapter 2: Floating rook (ukibisha): Introduction | p=106}} This rook attack can occur preemptively by moving their rook before their opponent's pawn push and, thus, preventing (at least initially) their opponent from opening their bishop diagonal. This option is known as '''Cat's Rook on Pawn''' (ネコの縦歩取り ''neko no tatefudori''). Hosking calls this '''Floating Rook Cat Variation'''.{{sfn | Hosking | 1997 | loc=Part II, Chapter 2: Floating rook section 3: Cat variation | p=113–114}} Or, the rook can attack the pawn after it has been pushed forward and the bishop diagonal is already open forcing their opponent to respond to protect that pawn. This option is called '''Floating Rook Hanamura Variation''' by Hosking.{{sfn | Hosking | 1997 | loc=Part II, Chapter 2: Floating rook section 4: Hanamura variation | p=114–117}}
{{clear}}

====Transition to Twisting Rook====

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| '''Rook on Pawn'''<br />until move 16
| –
| lg | ng | sg | gg | kg | | sg | ng | lg
| | rg | | | | | dah| bg |
| pg | | pg | pg | pg | pg | ggl| pg |
| | | | | | | pg | | pg
| | pg | | | | | | |
| ps | | | | | | rs | |
| | ps | ps | ps | ps | ps | ps | | ps
| | bs | gs | | | | | |
| ls | ns | ss | | ks | gs | ss | ns | ls
| 歩
| 8. ... &nbsp; G-3c
}}
{{Col-2}}
{{shogidiagram
|
| '''Rook on Pawn'''<br />until move 17
| –
| lg | ng | sg | gg | kg | | sg | ng | lg
| | rg | | | | | | bg |
| pg | | pg | pg | pg | pg | gg | pg |
| | | | | | | pg | | pg
| | pg | | | | | | |
| ps | | psl| | | | rs | |
| | ps | uah| ps | ps | ps | ps | | ps
| | bs | gs | | | | | |
| ls | ns | ss | | ks | gs | ss | ns | ls
| 歩
| 9. P-7g &nbsp; ...
}}
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{{shogidiagram
|
| '''Rook on Pawn'''<br />until move 21
| 歩
| lg | ng | sg | gg | kg | | sg | ng | lg
| | | | | | | | bg |
| pg | | pg | pg | pg | pg | gg | pg |
| | | | | | | pg | | pg
| | | psl| | | | | |
| ps | rg | uah| | | | rs | |
| | | | ps | ps | ps | ps | | ps
| | bs | gs | | | | | |
| ls | ns | ss | | ks | gs | ss | ns | ls
| 歩歩
| 11. P-7e &nbsp; ...
}}
{{Col-2}}
{{shogidiagram
|
| '''Twisting Rook'''<br />until move 29
| 歩
| lg | ng | | | kg | | | ng | lg
| | rg | gg | sg | | sg | | bg |
| pg | | pg | pg | pg | pg | gg | pg |
| | | | | | | pg | | pg
| | | ps | | | | | |
| ps | rsl| lat| lra| lra| las| | |
| bs | | ns | ps | ps | ps | ps | | ps
| | | gs | | | ks | | |
| ls | | ss | | | gs | ss | ns | ls
| 歩歩
| 15. R-7e &nbsp; ...
}}
{{Col-end}}

This type of opening often leads to the Floating Rook player also moving their rook to their left side of the board transitioning from an initial Static Rook strategy to a Ranging Rook strategy, which is usually Third File Rook. When this happens, the opening is referred to as '''[[Twisting Rook]]''' (ひねり飛車 ''hineribisha'').

As example of its formation, after the Rook on Pawn opening, White defends their pawn with a gold, and Black can open their bishop diagonal leading White to exchange pawns on the eighth file. After this, Black pushes their seventh pawn up further attacking White's rook leading to White to retreat their rook. Black subsequently starts developing an Ishida structure and then moves their rook to the eighth file threatening White with a rook exchange.


'''Rook on Pawn''' (タテ歩取り or 縦歩取り ''tatefudori'') is a subclass of Floating Rook openings in which the Floating Rook player moves their rook to the third file aiming to capture their opponent's pawn used to open their bishop diagonal at the 34 square.{{sfn | Fairbairn | 1986 | loc=Chapter 10: Opening patterns | p=64–65}}{{sfn | Hosking | 1996 | loc=Part II, Chapter 2: Floating rook (ukibisha): Introduction | p=106}}
Note that Rook on Pawn attack does not necessarily have to transition to a Twisting Rook position and that Twisting Rook may be played without first attacking the third file pawn.
{{clear}}

====Rook on Pawn Climbing Silver====

{{Col-begin | width=auto | class=floatright}}
{{Col-2}}
{{shogidiagram
|
| '''Rook on Pawn Climbing Silver'''<br />until move 13
| –
| lg | ng | | gg | kg | | sg | ng | lg
| | rg | sg | | | | gg | bg |
| pg | | pg | pg | pg | pg | pg | pg | pg
| | | | | | | | |
| | pg | | | | | | |
| | | | | | | | rs |
| ps | ps | ps | ps | ps | ps | ps | | ps
| | bs | gs | | | | ssl| |
| ls | ns | ss | | ks | gs | uah | ns | ls
| 歩
| 7. S-3h &nbsp; ... <br />
&nbsp;
}}
{{Col-2}}
{{shogidiagram
|
| '''Rook on Pawn Climbing Silver'''<br />until move 15
| –
| lg | ng | | gg | kg | | sg | ng | lg
| | rg | sg | | | | gg | bg |
| pg | | pg | dah | pg | pg | pg | pg | pg
| | | | pg | | | | |
| | pg | | | | | | |
| | | | | | | | rs |
| ps | ps | ps | ps | ps | ps | ps | ssl| ps
| | bs | gs | | | |durh| |
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
|
7. ... &nbsp; P-6d <br />
8. S-2g &nbsp; ...
}}
{{Col-end}}

{{Col-begin | width=auto | class=floatright}}
{{Col-2}}
{{shogidiagram
|
| '''Rook on Pawn Climbing Silver'''<br />until move 16
| –
| lg | ng | | gg | kg | | sg | ng | lg
| | rg | sg | | | | gg | bg |
| pg | | pg | | pg | pg | dah| pg | pg
| | | | pg | | | pgl| |
| | pg | | | | | | |
| | | | | | | | rs |
| ps | ps | ps | ps | ps | ps | ps | ss | ps
| | bs | gs | | | | | |
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 8. ... &nbsp; P-3d
}}
{{Col-2}}
{{shogidiagram
|
| '''Rook on Pawn Climbing Silver'''<br />until move 17
| –
| lg | ng | | gg | kg | | sg | ng | lg
| | rg | sg | | | | gg | bg |
| pg | | pg | | pg | pg | | pg | pg
| | | | pg | | | pg | |
| | pg | | | | | | |
| | | | | | | rsl| lah|
| ps | ps | ps | ps | ps | ps | ps | ss | ps
| | bs | gs | | | | | |
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 9. R-3f &nbsp; ...
}}
{{Col-end}}

{{Col-begin | width=auto | class=floatright}}
{{Col-2}}
{{shogidiagram
|
| '''Rook on Pawn Climbing Silver'''<br />until move 18
| –
| lg | ng | | gg | kg | | sg | ng | lg
| | rg | sg | | | | dah| bg |
| pg | | pg | | pg | pg | ggl| pg | pg
| | | | pg | | | pg | |
| | pg | | | | | | |
| | | | | | | rs | |
| ps | ps | ps | ps | ps | ps | ps | ss | ps
| | bs | gs | | | | | |
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 9. ... &nbsp; G-3c
}}
{{Col-2}}
{{shogidiagram
|
| '''Rook on Pawn Climbing Silver'''<br />until move 19
| –
| lg | ng | | gg | kg | | sg | ng | lg
| | rg | sg | | | | | bg |
| pg | | pg | | pg | pg | gg | pg | pg
| | | | pg | | | pg | |
| | pg | | | | | | |
| | | | | | | rs | | ssl
| ps | ps | ps | ps | ps | ps | ps |durh| ps
| | bs | gs | | | | | |
| ls | ns | ss | | ks | gs | | ns | ls
| 歩
| 10. S-1f &nbsp; ...
}}
{{Col-end}}

{{Expand section|date=November 2016}}

'''Rook on Pawn Climbing Silver''' (タテ歩棒銀 ''tatefu bōgin'' or 飛尻出棒銀 ''hijiride bōgin'') combines the Rook on Pawn technique with a Climbing Silver strategy.
{{clear}}
{{clear}}


Line 790: Line 590:


*{{cite book | last=Aono | first=Teruichi | title=Better moves for better shogi | edition=2nd | orig-year=1983 | year=2009 | publisher=Ishi Press | translator-last=Fairbairn | translator-first=John | isbn=978-4-87187-999-6}}
*{{cite book | last=Aono | first=Teruichi | title=Better moves for better shogi | edition=2nd | orig-year=1983 | year=2009 | publisher=Ishi Press | translator-last=Fairbairn | translator-first=John | isbn=978-4-87187-999-6}}
*{{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: Shogi problems in Japanese and English | year=1983 | publisher=山海堂 | translator-last=Fairbairn | translator-first=John | ref=harv | isbn=4-381-00598-8}}
* {{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 book | last=Fairbairn | first=John | title=Shogi for beginners | year=1986 | edition=2nd | publisher=[[Ishi Press]] | ref=harv | isbn=978-4-8718-720-10}}
* {{cite book | last=Fairbairn | first=John | title=Shogi for beginners | year=1986 | edition=2nd | publisher=[[Ishi Press]] | isbn=978-4-8718-720-10}}
* {{cite book | last=Hosking | first=Tony | title=The art of shogi | year=1997 | publisher=The Shogi Foundation | ref=harv | isbn=978-0-95310-890-9}}
* {{cite book | last=Hosking | first=Tony | title=The art of shogi | year=1996 | publisher=The Shogi Foundation | isbn=978-0-95310-890-9}}
*{{cite book| last=Kitao | first=Madoka | title=Joseki at a glance | year=2011 | author-link=:ja:北尾まどか | publisher=Nekomado | translator-last=Kawasaki | translator-first=Tomohide | ref=harv | isbn=978-4-9052-2501-0}}
*{{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 web | url=http://www.shogi.net/quest/ | script-title=ja:消えた戦法の謎 | title=kieta senpō no nazo | trans_title=Quest of the lost systems | website=Shogi.Net | year=1995 | publisher=Mainichi Communications Co. | ref={{harvid|Quest of the Lost Systems|1995}}}} · Partial translation of 消えた戦法の謎 kieta senpō no nazo by Kiyokazu Katsumata.
* {{cite web | url=http://www.shogi.net/quest/ | script-title=ja:消えた戦法の謎 | title=kieta senpō no nazo |trans-title=Quest of the lost systems | website=Shogi.Net | year=1995 | publisher=Mainichi Communications Co. | ref={{harvid|Quest of the Lost Systems|1995}}}} · Partial translation of 消えた戦法の謎 kieta senpō no nazo by Kiyokazu Katsumata.


==External links==
==External links==


* Shogi Shack:
* [http://www.shogishack.net/pages/shogi-strategies/opening-showcase/sitting-silver.html Shogi Shack: Koshikake gin]
* [http://www.shogishack.net/pages/shogi-strategies/opening-showcase/sickle-silver.html Shogi Shack: Kusari gama gin]
** [http://www.shogishack.net/pages/study-room/shogi-openings/double-wing-attack-basic.html Aigakari Basics]
** [http://www.shogishack.net/pages/shogi-strategies/opening-showcase/sitting-silver.html Koshikake Gin]
** [http://www.shogishack.net/pages/shogi-strategies/opening-showcase/sickle-silver.html Kusari Gama Gin]
* [http://yamajunnshogi.web.fc2.com/CCP008.html Yamajunn's Basic Shogi Opening: Aigakari]
* Shogi Maze:
** [http://shogimaze.free.fr/senpou/openings029001.html Aigakari: Taking Vanguard Position On 1st File]
** [http://shogimaze.free.fr/senpou/openings030001.html Aigakari: Gote's Option At The 16th Move]

{{Shogi openings}}


[[Category:Shogi openings]]
[[Category:Shogi openings]]
[[Category:Static Rook openings]]
[[Category:Double Wing Attack openings]]
[[Category:Double Static Rook openings]]

Latest revision as of 19:30, 29 January 2023

Floating Rook
position after 11 moves
☖ pieces in hand: –
987654321 
香桂銀金王 銀桂香1
 飛    金角 2
歩 歩歩歩歩歩歩歩3
        4
 歩      5
       飛 6
歩歩歩歩歩歩歩 歩7
 角金      8
香桂銀 玉金銀桂香9
☗ pieces in hand: 歩
6. R-26

In shogi, Floating Rook (浮き飛車 ukibisha) is a variation of the Double Wing Attack (相掛かり aigakari) opening in which Black's rook falls back to rank 6 (R-26) aiming to protect this rank and prevent White from exchanging pawns on the eighth file to get a pawn in hand.

The translated term floating is synonymous with the term hanging as in hanging piece used in western chess where floating means a piece that is not defended by another piece.

From this position, there are numerous subvariants.

Development

[edit]

6. R-26. Floating Rook.

6. ...72 or 6. ...62. White has two options regarding their right silver: it could advance either to the seventh file or the sixth file.[1][2] The seventh file (S-72) option is more common and has become the standard move in Double Wing Attack while the sixth file option is an older move according to professional player Kiyokazu Katsumata (勝又清和).[3]

6. ...72. Moving the silver up to the seventh file allows White the following possibilities:

(i) to play a faster Climbing Silver advancing directly through the eighth file
(ii) to keep an opening for the king to escape (if necessary) through a K-62 – K-72 path
(iii) allows the silver to protect the 83 square from Black's pawn drop on 83 or dangling pawn drop on 84 should White's rook move off of the eighth file
(iv) prevent Black's rook from capturing the silver (if moved instead to 6. ...62) in a Tsukada Special type of attack

However, this gives up defending 53 with the silver and moving to the central file via that square.

6. ...62. Moving the silver to the sixth file allows White the following possibilities:

(i) to immediately protect the pawn resting on 53
(ii) to eventually move their silver to the 53 square

However, the silver on 62 and the gold on 61 may form a wall blocking the king from escaping toward the right side of White's board if under attack. White can still attempt a Climbing Silver strategy although it will be a slower Oblique Climbing Silver strategy since White must move a pawn out of the way first.

Both moves allow for a Reclining Silver positioning of the silver on 54.

After move 22, Floating Rook Double Wing Attack branches off into several different substrategies, which are detailed below.

Sickle and Chain Silver

[edit]

Sickle and Chain Silver or Chained Sickle Silver (鎖鎌銀 or くさり鎌銀 kusari gama gin)

Reclining Silver

[edit]

In order to play (Double or Mutual) Reclining Silver or Sitting Silver, Black must advance their right silver to the 56 square through 47 while White advances their silver to 54 through 63.[4][5]

Since a pawn is blocking the path of the silver, it must be pushed forward first. White usually makes this pawn push (on the sixth file) earlier than Black's pawn push on the fourth file.

13. ...P-34. White activates their bishop by opening the bishop diagonal. It's possible that opening the diagonal could have been done sooner before moving the silvers and edge pawns.

Clanging Silvers

[edit]

Clanging Silvers (ガッチャン銀 gatchan gin)

Nakahara Floating Rook

[edit]

Nakahara Double Wing Attack (中原流相掛かり nakahara-ryū aigakari) is a Floating Rook variant has Black advancing the third file pawn.

This allows a space on the 37 square for either the silver or the knight to move to.

White responds by activating their bishop.

These strategies are named after Makoto Nakahara.

Nakahara Silver-37

[edit]
Nakahara Silver-37
until move 30
☖ pieces in hand: 歩歩
987654321 
香桂 王 銀桂香1
    金 金角 2
歩 歩銀歩歩 歩 3
 飛 歩    歩4
      歩  5
  歩  銀 飛歩6
歩歩 歩歩歩   7
 角金      8
香桂銀 玉金 桂香9
☗ pieces in hand: 歩
15. ...G-52

Nakahara's silver variant starts with a silver advanced on the third file.

White likewise advances their silver.

Black then aims for an attack on the third file.

Nakahara Knight-37

[edit]

Nakahara's knight variant moves the knight to 37 instead of the silver.

Tsukada Special

[edit]
Tsukada Special
☖ pieces in hand: 歩
987654321 
香桂 金王 銀桂香1
  銀   金角 2
歩 歩 歩歩歩歩 3
   歩   歩歩4
         5
 飛歩    飛歩6
歩  歩歩歩歩  7
 角金   銀  8
香桂銀 玉金 桂香9
☗ pieces in hand: 歩
Main article: Tsukada Special

Tsukada Special (塚田スペシャル) is a Floating Rook variant of the Double Wing Attack opening developed by professional Yasuaki Tsukada.

Rook on Pawn

[edit]
Main article: Rook on Pawn

Rook on Pawn (タテ歩取り or 縦歩取り tatefudori) is a subclass of Floating Rook openings in which the Floating Rook player moves their rook to the third file aiming to capture their opponent's pawn used to open their bishop diagonal at the 34 square.[6][7]

See also

[edit]

References

[edit]
  1. ^ Hosking 1996, p. 105, Part II, Chapter 2: Floating rook (ukibisha): Introduction.
  2. ^ Hosking 1996, p. 117–122, Part II, Chapter 2: Floating rook: Section 5: Tsukada Special.
  3. ^ Quest of the Lost Systems 1995, ("Tsukata Special: Wondrous new discovery").
  4. ^ Aono 1983, p. 51–100, Wing Attack, Reclining Silver.
  5. ^ Hosking 1996, p. 108–112, Floating Rook section 1: Clanging Silvers & section 2: versus Centre Vanguard Pawn.
  6. ^ Fairbairn 1986, p. 64–65, Chapter 10: Opening patterns.
  7. ^ Hosking 1996, p. 106, Part II, Chapter 2: Floating rook (ukibisha): Introduction.

Bibliography

[edit]
  • Aono, Teruichi (2009) [1983]. Better moves for better shogi. Translated by Fairbairn, John (2nd ed.). Ishi Press. ISBN 978-4-87187-999-6.
  • Aono, Teruichi (1983). Guide to shogi openings: Unlock the secrets of joseki 将棋定跡のカギ: 和英 定跡問題集. Translated by Fairbairn, John. 山海堂. ISBN 4-381-00598-8.
  • Fairbairn, John (1986). Shogi for beginners (2nd ed.). Ishi Press. ISBN 978-4-8718-720-10.
  • Hosking, Tony (1996). The art of shogi. The Shogi Foundation. ISBN 978-0-95310-890-9.
  • Kitao, Madoka (2011). Joseki at a glance. Translated by Kawasaki, Tomohide. Nekomado. ISBN 978-4-9052-2501-0.
  • "kieta senpō no nazo" 消えた戦法の謎 [Quest of the lost systems]. Shogi.Net. Mainichi Communications Co. 1995. · Partial translation of 消えた戦法の謎 kieta senpō no nazo by Kiyokazu Katsumata.
[edit]
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