Climbing Silver
{{Short description|Shogi strategy}}
{{shogi diagram
| floatright
| Climbing Silver
| –
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | |
| | | | | | | | ps |
| | | ps | | | | | ssl| ps
| ps | ps | | ps | ps | ps | ps | |
| | bs | gs | ss | gs | | | rs |
| ls | ns | | ks | | | | ns | ls
| –
|
}}
Climbing Silver (棒銀 bōgin, literally "pole-silver") is a shogi strategy.
Climbing Silver involves advancing a silver upward along with an advanced or dropped pawn supported by the rook aiming to break through the opponent's camp on their bishop's side.{{sfn|Fairbairn|1986}}
Many different Static Rook shogi openings include a Climbing Silver component. For instance, Climbing Silver can be played as part of Double Wing Attack, Fortress, or Bishop Exchange openings. (However, there are other variants of these openings that don't include Climbing Silver.) Climbing Silver can also be used against Ranging Rook opponents as well.
Diagonal Climbing Silver or Oblique Climbing Silver (斜め棒銀 naname bōgin) is a Climbing Silver attack involving the left silver which moves diagonally from its starting position on 7i to attack on the third or second files. This type of Climbing Silver is typical in Static Rook vs Ranging Rook games.
{{Expand Japanese|date=December 2016}}
Positioning
{{Expand section|date=May 2016}}
{{Col-begin|width=auto|class=floatright}}
{{Col-3}}
{{shogi diagram
|
| Silver's starting position
| –
| | | | | | gg | sg | ng | lg
| | | | | | | | bg |
| | | | | | pg | pg | pg | pg
| | | | | | | | |
| | | | | | | | ps |
| | | | | | | | |
| | | | | | ps | ps | | ps
| | | | | | | | rs |
| | | | | | | ssl | ns | ls
| –
| START
}}
{{Col-3}}
{{shogi diagram
|
| Silver to rank 5 (35)
| –
| | | | | | gg | sg | ng | lg
| | | | | | | | bg |
| | | | | | pg | pg | pg | pg
| | | | | | | | |
| | | | | | | ssl | ps |
| | | | | | | | |
| | | | | | ps | ps | | ps
| | | | | | | | rs |
| | | | | | | | ns | ls
| –
| i. S-38
ii. S-27
iii. S-26
iv. S-35
}}
{{Col-3}}
{{shogi diagram
|
| Silver to rank 5 (15)
| –
| | | | | | gg | sg | ng | lg
| | | | | | | | bg |
| | | | | | pg | pg | pg | pg
| | | | | | | | |
| | | | | | | | ps | ssl
| | | | | | | | |
| | | | | | ps | ps | | ps
| | | | | | | | rs |
| | | | | | | | ns | ls
| –
| i. S-38
ii. S-27
iii. S-26
iv. S-15
}}
{{Col-end}}
In the adjacent diagrams, the Black's silver advances to rank 5.
{{clear}}
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{{shogi diagram
|
| Pawn attack on
bishop's pawn (23)
| –
| | | | | | gg | sg | ng | lg
| | | | | | | | bg |
| | | | | | pg | pg | pg | pg
| | | | | | | | psl|
| | | | | | | | | ss
| | | | | | | | |
| | | | | | ps | ps | | ps
| | | | | | | | rs |
| | | | | | | | ns | ls
| –
| i. S-38 ...
ii. S-27 ...
iii. S-26 ...
iv. S-15 ...
v. P-25 ...
}}
{{Col-2}}
{{shogi diagram
|
| Pawn exchange,
Silver advance to 24
| –
| | | | | | gg | sg | ng | lg
| | | | | | | | bg |
| | | | | | pg | pg | | pg
| | | | | | | | ssl|
| | | | | | | | |
| | | | | | | | |
| | | | | | ps | ps | | ps
| | | | | | | | rs |
| | | | | | | | ns | ls
| 歩
| i. S-38 ...
ii. S-27 ...
iii. S-26 ...
iv. S-15 ...
v. P-24 Px24
vi. Sx24 ...
}}
{{Col-end}}
Once the silver has reached the e file (S-15 in the adjacent diagram), Black can attempt to attack White's bishop pawn at 23 by advancing their pawn (P-24). White can capture Black's pawn, but the silver can recapture White's pawn. Because White did not properly defend their bishop's head here, White's camp is somewhat weaker and more susceptible to subsequent attacks from Black.
{{clear}}
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{{shogi diagram
|
| Silver to 25
| –
| | | | | | gg | sg | ng | lg
| | | | | | | | bg |
| | | | | | pg | pg | pg | pg
| | | | | | | | |
| | | | | | | | ssl|
| | | | | | | | |
| | | | | | ps | ps | | ps
| | | | | | | | rs |
| | | | | | | | ns | ls
| 歩
| i. S-38
ii. S-27
iii. S-26
iv. S-25
}}
{{Col-2}}
{{shogi diagram
|
| 24 pawn drop
| –
| | | | | | gg | sg | ng | lg
| | | | | | | | bg |
| | | | | | pg | pg | pg | pg
| | | | | | | | psl|
| | | | | | | | ss |
| | | | | | | | |
| | | | | | ps | ps | | ps
| | | | | | | | rs |
| | | | | | | | ns | ls
| –
| i. S-38
ii. S-27
iii. S-26
iv. S-25
v. P*24
}}
{{Col-end}}
Similarly, it's also possible to play Climbing Silver when Black has no pawn on the second file. Here the silver can climb to the empty 25 square. And, if there's a pawn in hand, then that pawn can be dropped to 24.
{{clear}}
{{shogi diagram
| tright
| Climbing Silver
| 歩
| lg | ng | | | | kg | | ng | lg
| | rg | | sg | | | gg | bg |
| pg | | | pg | | gg | sg | pg |
| | | pg | | pg | pg | pg | |
| | pg | | | | | | ps | ssl
| | | ps | | ps | | | |
| ps | ps | ss | ps | | ps | ps | |
| | | gs | | gs | | | rs |
| ls | ns | bs | ks | | | | ns | ls
| 歩
|
}}
In the board diagram to the right, the Black's silver has successfully climbed to rank 5 on the first file (15).
{{clear}}
{{shogi diagram
| tright
| Climbing Silver, continued
| 銀
| lg | ng | | | | kg | | ng |
| | rg | | sg | | | gg | bg | psl
| pg | | | pg | | gg | sg | pg | pg
| | | pg | | pg | pg | pg | |
| | pg | | | | | | ps | ls
| | | ps | | ps | | | |
| ps | ps | ss | ps | | ps | ps | |
| | | gs | | gs | | | rs |
| ls | ns | bs | ks | | | | ns |
| 香
| i. ... Lx15
ii. Lx15 P*13
iii. P*12 ...}}
A subsequent attack by Black, for example, could aim to sacrifice this silver in order to remove White's lance and then drop a dangling pawn within White's camp that threatens to promote.
Climbing Silver formations may be used with several different Static Rook openings such as Fortress, Double Wing, and Bishop Exchange as well as Ranging Rook openings such as Fourth File Rook.
{{clear}}
See also
References
{{Reflist|30em}}
Bibliography
- {{cite book | last=Aono | first=Teruichi | author-link=Teruichi Aono | 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: 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= 青野 [Aono] | first= 照市 [Teruichi] | year=2001 | title=最新棒銀戦法 | publisher=創元社}}
- {{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=1996 | publisher=The Shogi Foundation | isbn=978-0-95310-890-9}}
- {{cite book | last= 飯塚 [Iizuka] | first= 祐紀 [Hiroki] | author-link=Hiroki Iizuka (shogi) | year=2008 | title=最強棒銀戦法 | publisher=創元社}}
- {{cite book | last=Kitao | first=Madoka | author-link=Madoka Kitao | year=2011 | title=Joseki at a glance | publisher=Nekomado | translator-last=Kawasaki | translator-first=Tomohide | isbn=978-4-9052-2501-0}}
- {{cite book| last=Kitao | first=Madoka | year=2011 | title=Joseki at a glance | publisher=Nekomado | translator-last=Kawasaki | translator-first=Tomohide | isbn=978-4-9052-2501-0}}
- {{cite book | last=Kitao | first=Madoka | year=2013 | title=Sabaki at a glance | publisher=Nekomado | translator-last=Kawasaki | translator-first=Tomohide | isbn=978-4-9052-2510-2}}
External links
- [http://www.shogi.net/nexus/ukekata/part1.html How to Defend in Shogi: Basic Formation 1: Bogin]
- [https://www.youtube.com/watch?v=SdP8o12NCig YouTube: HIDETCHI's Shogi Openings: Rapid Encountered Yagura, Primitive Climbing Silver] · Climbing Silver played by White in Fortress
- [https://www.youtube.com/watch?v=v-LB7Tif8uU&t=11m58s YouTube: HIDETCHI's Shogi Openings: Bishop Exchange #1] · Climbing Silver played by Black in Bishop Exchange (from 11 min 58 sec to 19 min 40 sec)
- [https://www.youtube.com/watch?v=OdyT7vtgCgk YouTube: HIDETCHI's Shogi Openings: Bishop Exchange #2] · Merits of Climbing Silver vs other silver strategies in Bishop Exchange
- [https://www.youtube.com/watch?v=dzg-0IgLVoU&t=8m24s YouTube: HIDETCHI's Shogi Openings: Bishop Exchange #4 (white's one-turn loss bishop exchange)] · Climbing Silver in One-Turn Loss Bishop Exchange (from 8 min 24 sec to 9 min 54 sec)
{{Shogi openings}}