Yagura opening

Double Yagura variation
after 32 moves
☖ pieces in hand: –
987654321 
香桂     桂香1
 飛 銀  金王 2
歩  歩 金銀歩歩3
 歩歩角歩歩歩  4
         5
  歩歩歩 歩  6
歩歩銀金 歩銀歩歩7
 玉金角   飛 8
香桂     桂香9
☗ pieces in hand: –
A common variation. Both players' kings are fully inside Yagura castles. Black has advanced their right offensive silver to 37 while White's bishop is positioned on 64.

Yagura or Fortress (矢倉 or 櫓 yagura) is both a Static Rook opening (矢倉戦法 yagura senpō) and a castle in shogi.

It is usually played in a Double Static Rook opening, which is often a Double Yagura opening. However, it may also occur in different Double Static Rook openings such as Yagura vs Right Fourth File Rook.

The Yagura castle (矢倉囲い yagura gakoi), which is the defining characteristic of Yagura games, is considered by many to be one of the strongest defensive positions in Double Static Rook games.[1]

The term yagura is the Japanese word for a tower-like structure in traditional Japanese castles.

Double Yagura

Double Yagura
☖ pieces in hand: –
987654321 
香桂   王 桂香1
 飛 銀金 金  2
歩  歩  銀歩歩3
 歩歩角歩歩歩  4
         5
  歩歩歩 歩  6
歩歩銀金 歩銀歩歩7
  金角   飛 8
香桂 玉   桂香9
☗ pieces in hand: –

The most commonly encountered Yagura strategies occur in Double Yagura games where both players use a Yagura formation.

Historical Yagura

Earlier josekis for Yagura in the Edo period (usually spelled 櫓 at that time) were very different from the current josekis.

For instance, in one variation, it is White who delays pushing their rook pawn (whereas Black delays the rook pawn push in the modern era) and an early bishop trade occurs before both players' kings are moved into their castles.

vs Right Fourth File Rook

Yagura vs Right Fourth Rook
☖ pieces in hand: –
987654321 
香桂 金王金銀桂香1
   飛   角 2
歩 歩 歩歩 歩歩3
 歩  銀 歩  4
   歩     5
  歩歩歩  歩 6
歩歩  銀歩歩 歩7
 角金銀   飛 8
香桂  玉  桂香9
☗ pieces in hand: –

vs Snowroof

Yagura vs Traditional Snowroof
☖ pieces in hand: –
987654321 
香桂  角王 桂香1
 飛  金 金  2
歩   銀銀 歩歩3
  歩歩歩歩歩  4
 歩     歩 5
  歩歩歩    6
歩歩銀金銀歩歩 歩7
  金角   飛 8
香桂玉    桂香9
☗ pieces in hand: –
Position after move 32 in an Ōza match between Habu (Black) and Nakamura (White) on September 18, 2013.

The Snowroof strategy can be played against a Yagura opponent.

Modern Snowroof vs Yagura
☖ pieces in hand: –
987654321 
香桂   王角桂香1
 飛 銀  金  2
歩  歩 金銀歩歩3
  歩 歩歩歩  4
 歩     歩 5
  歩歩 歩歩  6
歩歩角銀歩銀桂 歩7
  金 金    8
香桂  玉  飛香9
☗ pieces in hand: –
Position after move 29 of Momoko Katou (Black) vs Daisuke Nakagawa (White) August 25, 2017.

vs White's Left Mino

1. P-76 P-84

2. S-68 P-34

3. P-66 S-62

4. P-56 P-54

5. S-48 G61-52

6. G49-58 S-32

7. G-67 P-44

8. S-77 G-43

9. B-79 B-31

10. P-36

See also

References

Bibliography

  • Aono, Teruichi (2009) [1983]. Better moves for better shogi. Translated by Fairbairn, John (2nd ed.). Ishi Press. ISBN 978-4-87187-999-6.
  • 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.


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