Double Yagura

The Double Yagura or Double Fortress (相矢倉 or 相櫓 aiyagura) is an opening in which both players construct Yagura formations.

Double Yagura games are the most common type of Yagura games found at all levels of play.

Development


Blocking bishop with pawn

At move 6, White also has an option to play Climbing Silver by advancing their rook pawn to rank 5. (See: White Climbing Silver.)

New Yagura 24-Move Set

Yagura
up to move 24
☖ pieces in hand: –
987654321 
香桂   王角桂香1
 飛 銀金 金  2
歩  歩  銀歩歩3
 歩歩 歩歩歩  4
         5
  歩歩歩 歩  6
歩歩銀金 歩 歩歩7
  金  銀 飛 8
香桂角玉   桂香9
☗ pieces in hand: –

New Yagura 24-Move Set (新矢倉24手組 shin yagura nijū-tegumi)

Blocking bishop with silver

Yagura
up to move 5
☖ pieces in hand: –
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香桂銀金王金銀桂香1
 飛     角 2
歩 歩歩歩歩 歩歩3
 歩    歩  4
         5
  歩      6
歩歩銀歩歩歩歩歩歩7
 角    飛 8
香桂 金玉金銀桂香9
☗ pieces in hand: –
3. S-77

Blocking White's bishop with a silver (and also defending the eighth file from a possible attack) is an older Yagura joseki, which typically also includes advancing Black's rook pawn.

The more recent joseki advances Black's pawn on the sixth file instead. (See above.)

Classic Yagura 24-Move Set

Classic Yagura
up to move 24
☖ pieces in hand: –
987654321 
香桂   王角桂香1
 飛 銀金 金  2
歩  歩  銀歩歩3
 歩歩 歩歩歩  4
         5
  歩歩歩 歩歩 6
歩歩銀  歩  歩7
  金 金銀 飛 8
香桂角玉   桂香9
☗ pieces in hand: –

Classic Yagura 24-Move Set (旧矢倉24手組 kyū yagura nijū-tegumi)

Compared to the New Yagura 24-Move Set, note that the Classic Yagura 24-Move Set is (a) symmetrical where both sides have the same formation and (b) that only Black's formation differs (White's formation is the same in both the old and new josekis.)

Right Gold to 67 variant

Right Gold To 67 (6七金右 roku-nana kin migi)

Spearing the Sparrow
Spearing the Sparrow
up to move 25
☖ pieces in hand: –
987654321 
香桂   王角桂香1
 飛 銀金 金  2
歩  歩  銀歩歩3
 歩歩 歩歩歩  4
         5
  歩歩歩 歩歩歩6
歩歩銀  歩   7
  金 金銀 飛 8
香桂角玉   桂香9
☗ pieces in hand: –
25. P-16

Spearing the Sparrow (雀刺し suzume-zashi)

Quick Yagura castling

Fujii Quick castling
☖ pieces in hand: –
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香桂   王角桂香1
 飛 銀  金  2
歩  歩 金銀歩歩3
 歩歩 歩歩歩  4
       歩 5
  歩歩歩 歩  6
歩歩銀金 歩銀 歩7
   玉   飛 8
香桂角金  桂香9
☗ pieces in hand: –


Quick Yagura castling

White's Yagura Climbing Silver

Silver-37 variations

After the 24-move set of the Yagura opening, one major branch in the Yagura strategies is the Silver-37 set of variations. Many variations are under this parent variation.

Katō variation

Named after Hifumi Katō.

Waki System

Morishita System

The Morishita System delays moving the right attacking silver to 37 early. Instead, it simply moves the bishop to 68 allowing the king to move into the Yagura castle in subsequent moves.

See also

Bibliography

  • 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 (1981). "How to play the fortress opening part 1". Shogi (29): 4–6.
  • Fairbairn, John (1981). "How to play the fortress opening part 2". Shogi (30): 14–15.
  • Fairbairn, John (1984). Shogi for Beginners. 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.
  • Kitao, Madoka (2013). Sabaki at a glance. Translated by Kawasaki, Tomohide. Nekomado. ISBN 978-4-9052-2510-2.
  • "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.
  • Yebisu, Miles (2016). Comprehensive shogi guide in English: How to play Japanese chess. Laboratory Publishing.


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